PowerLogic™ PM5100 Series Power and
Energy Meter
User Guide
EAV15105 - EN03
04/2014
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Safety Information
Important Information
Read these instructions carefully and look at the equipment to become
familiar with the device before trying to install, operate, service or maintain it.
The following special messages may appear throughout this manual or on
the equipment to warn of potential hazards or to call attention to information
that clarifies or simplifies a procedure.
The addition of either symbol to a “Danger” or “Warning” safety label indicates that
an electrical hazard exists which will result in personal injury if the instructions are
not followed.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
DANGER indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided, can
result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, can
result in minor or moderate injury.
NOTICE is used to address practices not related to physical injury. The safety
alert symbol shall not be used with this signal word.
Please note
Electrical equipment should be installed, operated, serviced and maintained only by
qualified personnel. No responsibility is assumed by Schneider Electric for any
consequences arising out of the use of this material.
A qualified person is one who has skills and knowledge related to the construction,
installation, and operation of electrical equipment and has received safety training
to recognize and avoid the hazards involved.
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PowerLogic™ PM5100 series user guide
Table of Contents
Parts and Accessories .................................................................................................. 9
Box Contents ................................................................................................................ 9
Firmware .......................................................................................................................... 9
Before You Begin ........................................................................................................... 11
Notices ........................................................................................................................... 11
Models, Features and Options ....................................................................................... 13
Before you begin ............................................................................................................ 16
Dimension ...................................................................................................................... 17
Meter mounting .............................................................................................................. 17
Recommended cables ................................................................................................ 20
Direct connect voltage limits ....................................................................................... 22
Voltage and current input wiring ................................................................................. 24
Balanced system considerations ................................................................................ 25
play and meter
Heartbeat / communications LED ............................................................................... 29
Alarm / energy pulsing LED modes ............................................................................ 29
Notification icons ............................................................................................................ 30
Front panel meter setup ................................................................................................. 32
Configuring the basic setup parameters ..................................................................... 32
Setting up serial communications ............................................................................... 34
HMI settings ................................................................................................................... 35
Setting up the screen passwords ................................................................................... 36
Alarms setup .................................................................................................................. 41
Remote Meter Setup ...................................................................................................... 41
Viewing meter data from the front panel ........................................................................ 43
Meter data display screens ............................................................................................ 43
Using software to view meter data ................................................................................. 46
Digital output setup ..................................................................................................... 47
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Table of Contents
PowerLogic™ PM5100 series user guide
About Alarms ..................................................................................................................51
1-Second Alarms .........................................................................................................51
Unary Alarms ...............................................................................................................53
Alarm Priorities ............................................................................................................53
Alarm Setup ...................................................................................................................54
Setting Up 1-Second Alarms .......................................................................................55
Setting Up Unary Alarms .............................................................................................57
Viewing Alarm Activity and History .................................................................................57
Viewing Active Alarms and Alarm Counters ................................................................58
Real-time readings ..........................................................................................................61
Energy ............................................................................................................................61
Min/max values ...............................................................................................................61
Power factor ....................................................................................................................61
Power factor min/max convention ...............................................................................62
Power factor sign convention ......................................................................................62
Demand ..........................................................................................................................63
Power demand calculation methods ...........................................................................63
Current demand ..........................................................................................................65
Predicted demand .......................................................................................................65
Peak demand ..............................................................................................................66
Harmonics overview .......................................................................................................67
Total Harmonic Distortion and Total Demand Distortion .............................................67
Displaying harmonics data ..............................................................................................68
Viewing harmonics using the front panel .....................................................................68
Viewing TDD ...............................................................................................................69
Viewing THD/thd using the front panel ........................................................................69
Testing overview .............................................................................................................71
Accuracy test requirements .........................................................................................71
Verifying accuracy test ....................................................................................................73
Energy pulsing considerations ....................................................................................75
Test points ...................................................................................................................76
Typical sources of test errors ......................................................................................76
Front panel meter reset screens .....................................................................................77
Global resets ...................................................................................................................77
Single resets ...................................................................................................................78
Password Recovery ........................................................................................................81
Power Meter Memory .....................................................................................................81
Identifying the Firmware Version, Model, and Serial Number ........................................81
Additional Meter Status Information ................................................................................82
Downloading Firmware ...................................................................................................82
Troubleshooting ..............................................................................................................83
Heartbeat/Comms LED ...............................................................................................83
Getting Technical Support ..............................................................................................84
Register List ....................................................................................................................84
MID overview ..................................................................................................................85
MID compliance for the meter .........................................................................................85
Specifications relevant to MID ........................................................................................85
Safety precautions ..........................................................................................................86
Installation and wiring .....................................................................................................86
Installing the terminal covers ..........................................................................................87
PM5111 default screen ...................................................................................................87
6
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Table of Contents
Lock-protected functions ................................................................................................ 88
Basic setup menu ....................................................................................................... 89
Advanced setup menu ................................................................................................ 89
Clock setup menu ....................................................................................................... 89
Initializing the meter ....................................................................................................... 89
Locking or unlocking the meter ...................................................................................... 89
Terms ............................................................................................................................. 91
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Table of Contents
PowerLogic™ PM5100 series user guide
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PowerLogic™ PM5100 user guide
Chapter 1—Introduction
Chapter 1—Introduction
This user guide explains how to operate and configure a PowerLogic™ PM5100 Series
Power and Energy Meter.
Power and Energy Meter Hardware
Parts of the meter (rear view)
A
B
C
D
E
F
Voltage inputs
Control power
Current inputs
Digital output
Communications port - RS-485(optional)
Gasket
Parts and Accessories
Table 1– 1 Meter Models
Description
Model Numbers
TM
Power and Energy meter with Integrated Display
PowerLogic PM5100, PM5110, and PM5111
Box Contents
1. Power and Energy Meter (1)
2. Installation Guide (1)
3. Calibration Certificate (1)
4. Connectors
5. Retainer Clips (2)
Firmware
This user guide is written to be used with firmware version 01.00.0 and higher. See
on determining the firmware version.
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Chapter 1—Introduction
PowerLogic™ PM5100 user guide
10
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PowerLogic™ PM5100 series user guide
Chapter 2—Safety Precautions
Chapter 2—Safety Precautions
Before You Begin
Installation, wiring, testing and service must be performed in accordance with all local and
national electrical codes.
This section contains important safety precautions that must be followed before
attempting to install, service, or maintain electrical equipment. Carefully read and follow
the safety precautions outlined below.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe electrical
work practices. In the USA, see NFPA 70E or CSAZ462.
• Only qualified electrical workers should install this equipment. Such work should be
performed only after reading this entire set of instructions.
• If the equipment is not used in a manner specified by the manufacturer, the protection
provided by the equipment may be impaired.
• NEVER work alone.
• Before performing visual inspections, tests, or maintenance on this equipment,
disconnect all sources of electric power. Assume that all circuits are live until they
have been completely de-energized, tested, and tagged. Pay particular attention to
the design of the power system. Consider all sources of power, including the
possibility of back feeding.
• Turn off all power supplying the meter and the equipment in which it is installed before
working on it.
• Always use a properly rated voltage sensing device to confirm that all power is off.
• Before closing all covers and doors, inspect the work area for tools and objects that
may have been left inside the equipment.
• When removing or installing panels, do not allow them to extend into the energized
bus.
• The successful operation of this equipment depends upon proper handling,
installation, and operation. Neglecting fundamental installation requirements may
lead to personal injury as well as damage to electrical equipment or other property.
• Before performing Dielectric (Hi-Pot) or Megger testing on any equipment in which the
energy meter is installed, disconnect all input and output wires to the energy meter.
High voltage testing may damage electronic components contained in the meter.
• This equipment should be installed in a suitable electrical enclosure.
Failure to follow these instructions will result in death or serious injury.
Notices
FCC PART 15 NOTICE
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
•
Reorient or relocate the receiving antenna.
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PowerLogic™ PM5100 series user guide
Chapter 2—Safety Precautions
•
•
Increase the separation between the equipment and receiver.
Connect the equipment to an outlet on a circuit different from that to which the receiver
is connected.
•
Consult the dealer or an experienced radio/TV technician for help.
This Class B digital apparatus complies with Canadian ICES-003.
12
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PowerLogic™ PM5100 series user guide
Chapter 3—Hardware Reference
Chapter 3—Hardware Reference
This section supplements the meter’s installation sheet and provides additional
information about the meter’s physical characteristics and capabilities.
Models, Features and Options
Table 3 –1: PM5100 Series - Models, Features and Options
PM5100 series
Features and Options
PM5100
PM5110
PM5111
Installation
Fast installation, panel mount with integrated
display
Accuracy
Display
Cl 0.5S
Cl 0.5S
Cl 0.5S
Backlit LCD, multilingual, bar graphs, 6 lines, 4
concurrent values
Power and energy metering
3-phase voltage, current, power, demand,
energy, frequency, power factor
Power quality analysis
THD, thd, TDD
Harmonics, individual (odd) up to
15th
15th
15th
I/Os
Digital output
Alarms and control
1DO
1DO
1DO
Alarms
33
1
33
1
33
1
Set point response time, seconds
Communications
Serial ports with modbus protocol
0
1
1
MID ready compliance,
EN50470-1/3, Annex B and Annex D
Class C
Functions and Characteristics
Table 3 –2: Functions and Characteristics
General
PM5100 Series
Use on LV and MV systems
Basic metering with THD and min/max readings
Instantaneous rms values
Current (per phase and neutral)
Voltage (total, per phase L-L and L-N)
Frequency
Real, reactive, and apparent power (Total and per phase)
True Power Factor (Total and per phase)
Signed, Four Quadrant
Signed, Four Quadrant
Signed, Four Quadrant
Displacement PF (Total and per phase)
% Unbalanced I, V L-N, V L-L
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PowerLogic™ PM5100 series user guide
Chapter 3—Hardware Reference
Received/Delivered; Net and absolute
Energy Values*
Accumulated Active, Reactive and Apparent Energy
Demand Values*
Present, Last, Predicted, Peak, and Peak
Date Time
Current average
Active power
Present, Last, Predicted, Peak, and Peak
Date Time
Present, Last, Predicted, Peak, and Peak
Date Time
Reactive power
Apparent power
Present, Last, Predicted, Peak, and Peak
Date Time
Demand calculation (Sliding, fixed and rolling block, thermal
methods)
Synchronization of the measurement window to input,
communication command or internal clock
Settable Demand intervals
Other Measurements*
Operating timer
Load timer
Alarm counters and alarm logs
Power Quality Measurements
THD, thd (Total Harmonic Distortion) I, V L-N, V L-L per phase
TDD (Total Demand Distortion)
I, V L-N, V L-L
Individual harmonics (odds)
15th
Data Recording
Min/max of instantaneous values, plus phase identification*
Alarms with 1s timestamp*
Min/max log
I/Os
1
Digital output
(kWh only)
Timestamp resolution in seconds
1
NOTE: *Stored in non-volatile memory
Technical Specifications
Electrical Characteristics
Type of measurement: True rms on three-phase
(3P, 3P + N), zero blind
64 samples per cycle
Measurement accuracy
IEC 61557-12 1
Active Energy 2
Reactive Energy 2
Active Power
PMD/[SD|SS]/K70/0.5
Class 0.5S as per IEC 62053-22
Class 2S as per IEC 62053-23
Class 0.5 as per IEC 61557-12 1
Class 2 as per IEC 61557-12 1
Class 0.5 as per IEC 61557-12 1
Class 0.5 as per IEC 61557-12 1
Class 0.5 as per IEC 61557-12 1
Class 0.05 as per IEC 61557-12 1
Reactive Power
Apparent Power
Current, Phase
Voltage, L-N
Frequency
14
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Chapter 3—Hardware Reference
Power Factor
Class 0.5 as per IEC 61557-12 1
Voltage Harmonics
Voltage THD/thd
Class 5 as per IEC 61557-12 1
Class 5 as per IEC 61557-12 1
Class 5 as per IEC 61557-12 1
Class 5 as per IEC 61557-12 1
Annex B and Annex D (PM5111) Class C
Current Harmonics
Current THD/thd
MID Directive (2004/22/EC)
Input-voltage (up to 1.0 MV AC max, with voltage transformer)
UL: 20-347 V L-N/35-600 V L-L
Nominal Measured Voltage range
IEC: 20-400 V L-N/35-690 V L-L
(absolute range 35 V L-L to 760 V L-L)
Impedance
5 M Ω
F nom
50/60 Hz
Input-current (configurable for 1 or 5 A secondary CTs)
I nom
5 A
Starting current: 5mA
Operating range: 50mA to 8.5A
Measured Amps with over range and Crest Factor
Withstand
Continuous 20 A,10s/hr 50 A, 1s/hr 500 A
Impedance
< 0.3 m Ω
F nom
50/60 Hz
Burden
<0.026VA at 8.5A
Frequency measurement
Measurement range
AC control power
45 to 65 Hz
100 - 277 V AC L-N / 415 V L-L +/-10%
Operating range
CAT III 300V class per IEC 61010
<5 W,11 VA at 415 V L-L
Burden
Frequency
45 to 65 Hz
80 mS typical at 120V AC and maximum burden.
Ride-through time
100 mS typical at 230 V AC and maximum burden
100 mS typical at 415 V AC and maximum burden
DC control power
Operating range
Burden
125-250 V DC ±20%
<4 W at 250 V DC
Ride-through time
Outputs
50 mS typical at 125 V DC and maximum burden
Digital output
Max load voltage
Max load current
On Resistance
40 V DC
20 mA
50 Ω max
from 1 to 9,999,999 pulses per k_h (k_h = kWh,
kVARh or kVAh depending on the energy parameter
selected)
Meter constant
Pulse width for Digital Output
Pulse frequency for Digital Output
Leakage current
50% duty cycle
25 Hz max.
0.03 micro Amps
5 kV rms
Isolation
Optical outputs
Pulse width (LED)
Pulse frequency
200 s
50 Hz. max.
Meter constant
from 1 to 9,999,999 pulses per k_h
Mechanical Characteristics
Product weight
380 g
IP degree of protection (IEC 60529)
IP52 front display, IP30 meter body
96 x 96 x 72mm (depth of meter from housing
mounting flange) [13mm]
Dimensions W x H x D [protrusion from cabinet]
Mounting position
Panel thickness
Vertical
6 mm maximum
Environmental Characteristics
Operating temperature
Meter
-25 °C to +70 °C
-25 °C to +70 °C
Display (Display functions to -25º with reduced
performance)
Storage temp.
Humidity range
-40 °C to +85 °C
5 to 95% RH at 50 °C (non-condensing)
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PowerLogic™ PM5100 series user guide
Chapter 3—Hardware Reference
Pollution degree
Altitude
2
2000 m CAT III / 3000 m CAT II
For indoor use only
Electromagnetic Compatibility 3
Electrostatic discharge
IEC 61000-4-2
Immunity to radiated fields
Immunity to fast transients
Immunity to surge
IEC 61000-4-3
IEC 61000-4-4
IEC 61000-4-5
Conducted immunity 150kHz to 80MHz
Immunity to magnetic fields
Immunity to voltage dips
Radiated emissions
IEC 61000-4-6
IEC 61000-4-8
IEC 61000-4-11
FCC part 15, EN 55022 Class B
FCC part 15, EN 55022 Class B
Conducted emissions
Safety
CE, as per IEC 61010-1 (3rd Edition), IEC 62052-11
& IEC61557-12 1
Europe
cULus as per UL61010-1 (3rd Edition)
CAN/CSA-C22.2 No. 61010-1 (3rd Edition)
U.S. and Canada
Measurement category (Voltage and Current inputs)
CAT III up to 400 V L-N / 690 V L-L
As per IEC/UL 61010-1 (3rd Edition)
II, Double insulated for user accessible parts
Dielectric
Protective Class
Communication
2-Wire, 9600,19200 or 38400 baud, Parity - Even,
Odd, None, 1 stop bit if parity Odd or Even, 2 stop
bits if None; (Optional)
RS-485 port Modbus RTU, Modbus ASCII (7 or 8 bit),
JBUS
Firmware and language file update
Isolation
Meter firmware update via the communication ports
2.5 kVrms, double insulated
Human Machine Interface
Display type
Monochrome Graphics LCD
128 x 128
Resolution
Backlight
White LED
Viewable area (W x H)
Keypad
67 x 62.5 mm
4-button
Indicator Heartbeat / Comm activity
Green LED
Energy pulse output / Active alarm indication (configurable) Optical, amber LED
Wavelength
590 to 635 nm
2.5 kHz
Maximum pulse rate
1 For firmware version 1.1.1 and higher
2 For 1A nominal CT when I > 0.15A
3 Tests are conducted as per IEC 61557-12 (IEC 61326-1), 62052-11 and EN50470
Before you begin
Safety precautions
Carefully read and follow the safety precautions before working with the meter.
Installation, wiring, testing and service must be performed in accordance with all local and
national electrical codes.
16
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PowerLogic™ PM5100 series user guide
Chapter 3—Hardware Reference
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe electrical
work practices. See NFPA 70E in the USA or applicable local standards.
• Turn off all power supplying this device before working on it.
• Always use a properly rated voltage sensing device to confirm that all power is off.
• Do not exceed the device’s ratings for maximum limits.
• Always use grounded external CTs for current inputs.
Failure to follow these instructions will result in death or serious injury.
1. Turn off all power supplying this device before working on it.
2. Always use a properly rated voltage sensing device to confirm that all power is off.
Dimension
Figure 3–1: Dimension
78.5mm
12.8mm
72.00mm
96.00mm
Meter mounting
This section describes how to mount the meter.
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PowerLogic™ PM5100 series user guide
Chapter 3—Hardware Reference
Mounting the PM5100
The meter is designed to be mounted inside a 1/4-DIN panel cutout.
1. Inspect the gasket (installed around the perimeter of the front display) and make sure
it is secured properly and not damaged.
2. Insert the meter through the mounting hole.
3. Line up the tabs of the retainer clips with the slots on either side of the meter. While
holding the retainers at a slight angle, push the retainers in and forward to position
them in place. In situations where the spacing between meters is tight, use a flat-head
screwdriver with a long, narrow shaft to help secure the clips.
4. Push the middle of the clip assembly to lock the retainer in place and secure the
meter.
18
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PowerLogic™ PM5100 series user guide
Chapter 3—Hardware Reference
Meter wiring
For wiring instructions and safety precautions, see the meter installation sheet that was
•
•
Wire connections to the meter’s voltage inputs, control power, digital output, and RS-
485 communications are terminated using the supplied pluggable wire connectors.
When wiring the meter’s current inputs, terminate the wire ends with ring or split-ring
crimp connectors.
Use the meter installation sheet when wiring the meter.
UL: CAT III
ꢀꢅꢅꢇꢋꢌꢌ9/1ꢁꢍꢀꢂ9//ꢃsꢃꢀꢅꢎꢃꢃꢃ
20-347VLN/35-600VLL
IEC: CAT III
ꢂꢅꢁꢉꢅꢃsꢃꢂꢃ+]ꢃꢏꢃꢀꢀ9$
ꢃꢃ
ꢀꢋꢂꢇꢋꢂꢅ9ꢃsꢃꢋꢅꢎꢃꢃꢃꢃꢏꢃꢍ:
20-400VLN/35-690VLL
I1+
I2+
I2-
I
3+
I
I1-
3-
Modbus
RS-485
ꢀ$ꢁꢂ$ꢃ120ꢄꢃꢅꢆꢅꢅꢂꢇꢂꢈꢉꢊ$
_
+
0 V
Modbus
RS-485
D0 = Rx-, Tx-
D1 = Rx+, Tx+
Serial No.
Description
Specification
2
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Wire size: 0.82 - 3.31 mm (18 - 12 AWG)
Wire strip length: 0.28 in (7 mm)
Torque: 0.5 - 0.6 N·m (4.4 - 5.3 in·lb)
Screw driver type: M3
Voltage Inputs (V1, V2, V3, VN)
Control Power (L1, L2)
2
Wire size: 0.82 - 3.31 mm (18 - 12 AWG)
Wire strip length: 0.28 in (7 mm)
Torque: 0.5 - 0.6 N·m (4.4 - 5.3 in·lb)
Screw driver type: M3
2
Wire size: 0.33 - 3.31 mm (22 - 12 AWG)
Wire strip length: 0.24 in (6 mm)
Torque: 0.5 - 0.6 N·m (4.4 - 5.3 in·lb)
Screw driver type: M2
Digital Output (D1+, -/C)
Current Inputs
2
Wire size: 0.82 - 3.31 mm (18 - 12 AWG)
Wire strip length:0.28 in (7 mm)
Torque: 0.9 - 1.0 N·m (8.0 - 9.0 in·lb)
Screw driver type: PH1
(I , I , I , I , I , I
)
1+ 1- 2+ 2- 3+ 3-
2
Wire size: 0.33 - 3.31 mm (22 - 12 AWG)
Wire strip length: 0.24 in (6 mm)
Torque: 0.5 - 0.6 N·m (4.4 - 5.3 in·lb)
Screw driver type: M3
Modbus RS-485 (+,-,
, C)
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PowerLogic™ PM5100 series user guide
Chapter 3—Hardware Reference
Recommended cables
Communication Make
Part code
Description
3105A
3106A
Multi-Conductor - EIA Industrial RS-485 PLTC/CM
Multi-Conductor - EIA Industrial RS-485 PLTC/CM
RS-485
Belden
20
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PowerLogic™ PM5100 series user guide
Chapter 3—Hardware Reference
Wiring Diagrams
1PH
1PH2WLN
1PH2WLL
1PH3WLL with N
( I1 ) ( I2 ) ( I3 )
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
+
-
+
-
+
-
+
-
+
-
+
-
++
-
-
+
-
A
B
A
B
B
A
+
+
+
L
N
L1
L2
N
L1
+
L2
3PH3W
3CT
2CT
1CT *
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
A
B
A
B
A
B
+
+
+
L1
L2
L3
L1
L1
L2
L3
+
L2
+
+
L3
2VT, 3CT
2VT, 2CT
2VT, 1CT *
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
-
-
+
-
+
+
+
-
+
-
+
-
+
-
+
-
+
-
A
B
A
B
A
B
C
C
C
+
+
+
L1
L2
L3
L1
L2
L3
L1
L2
L3
+
+
+
3PH4W
3CT
2CT *
1CT *
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
A
B
A
B
A
B
+
+
+
L1
L2
L3
N
L1
L2
L3
N
L1
L2
L3
N
+
+
+
3VT, 3CT
3VT, 2CT *
3VT, 1CT *
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
( I1 ) ( I2 ) ( I3 )
V1 V2 V3 VN
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
A
A
B
B
A
B
C
C
C
+
+
+
L1
L2
L3
N
L1
L2
L3
N
L1
L2
L3
N
+
+
+
NOTE: According to Blondel's theorem, in an N wire system a minimum of N-1 measuring elements are required for correct measurement.
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Chapter 3—Hardware Reference
Symbol
Description
500 mA fused disconnect / circuit breaker (not supplied)
Shorting block (not supplied)
PT primary fuses and disconnect switch (not supplied)
Indicates wiring for a balanced system
*
NOTE:
•
•
•
Clearly label the device’s disconnect circuit mechanism and install it within easy reach
of the operator.
The fuses / circuit breakers must be rated for the installation voltage and sized for the
available fault current.
Fuse for neutral terminal is required if the source neutral connection is not grounded.
Potential
Current Transformer
Transformer
IEC
ANSI
Power system
This section outlines typical requirements for wiring the voltage and current inputs of the
meter to the electrical power system.
For wiring instructions and safety precautions, see the meter installation sheet that was
Direct connect voltage limits
You can connect the meter’s voltage inputs directly to the phase voltage lines of the
power system if the power system’s line-to-line or line-to-neutral voltages do not exceed
the meter’s direct connect maximum voltage limits. The meter's voltage measurement
inputs are rated by the manufacturer for up to 400 V L-N / 690 V L-L. However, the
maximum voltage allowed for direct connection may be lower, depending on the local
electrical codes and regulations. In US and Canada the maximum voltage on the meter
voltage measurement inputs may not exceed 347 V L-N / 600 V L-L.
If your system voltage is greater than the specified direct connect maximum voltage, you
must use VTs (voltage transformers) to step down the voltages.
22
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Chapter 3—Hardware Reference
Power system setup parameters
Direct connect maximum
Power system description
—
Meter setting
# of VTs
(if required)
Symbol
UL
IEC
Single-phase 2-wire line-to-neutral
—
347 V L-N
400 V L-N
1 VT
1VT
1PH2W LN
Single-phase 2-wire line-to-line
—
600 V L-L
600 V L-L
1PH2W LL
Single-phase 3-wire line-to-line with
neutral
347 V L-N /
600 V L-L
400 V L-N /
690 V L-L
2VT
—
1PH3W LL with N
3-phase 3-wire Delta ungrounded
—
600 V L-L
600 V L-L
600 V L-L
600 V L-L
600 V L-L
600 V L-L
600 V L-L
600 V L-L
600 V L-L
600 V L-L
2 VT
3PH3W Dlt Ungnd
3-phase 3-wire Delta corner
grounded
2 VT
2 VT
2 VT
2 VT
3 VT
—
3PH3W Dlt Crnr Gnd
3-phase 3-wire Wye ungrounded
—
3PH3W Wye Ungnd
3-phase 3-wire Wye grounded
—
3PH3W Wye Gnd
3-phase 3-wire Wye resistance-
grounded
—
3PH3W Wye Res Gnd
3-phase 4-wire open Delta center-
tapped
240 V L-N /
415 V L-N /
480 V L-L
240 V L-N /
415 V L-N /
480 V L-L
—
3PH4W Opn Dlt Ctr Tp
N
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Chapter 3—Hardware Reference
Power system setup parameters (continued)
Direct connect maximum
Power system description
—
Meter setting
# of VTs
(if required)
Symbol
UL
IEC
3-phase 4-wire Delta center-tapped
240 V L-N /
415 V L-N /
480 V L-L
240 V L-N /
415 V L-N /
480 V L-L
—
3 VT
3PH4W Dlt Ctr Tp
N
3-phase 4-wire ungrounded Wye
347 V L-N /
600 V L-L
347 V L-N /
600 V L-L
—
3 VT or 2 VT
3 VT or 2 VT
3 VT or 2 VT
3PH4W Wye Ungnd
3-phase 4-wire grounded Wye
347 V L-N /
600 V L-L
400 V L-N /
690 V L-L
—
N
3PH4W Wye Gnd
3-phase 4-wire resistance-grounded
Wye
347 V L-N /
600 V L-L
347 V L-N /
600 V L-L
—
N
3PH4W Wye Res Gnd
Voltage and current input wiring
For wiring instructions and safety precautions, see the meter installation sheet that was
Voltage input protection
The meter’s voltage inputs must be wired to fuses/breakers and a disconnect switch. If
using a voltage transformer (VT), both primary and secondary sides of the VT must be
wired to fuses/breakers and disconnect switches.
•
•
•
Clearly label the device’s disconnect circuit mechanism and install it within easy reach
of the operator.
The fuses / circuit breakers must be rated for the installation voltage and sized for the
available fault current.
Fuse for neutral terminal is required if the source neutral connection is not grounded.
See the meter installation sheet for fuse ratings.
Current input protection
For all connected current inputs, use a CT shorting block to short-circuit the secondary
leads of the CTs before removing the current input connections to the meter.
NOTE: Ground any unused current inputs.
24
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Chapter 3—Hardware Reference
Balanced system considerations
In situations where you are monitoring a balanced 3-phase load, you may choose to
connect only one or two CTs on the phase(s) you want to measure, and then configure
the meter so it calculates the current on the unconnected current input(s).
NOTE: For a balanced 4-wire Wye system, the meter’s calculations assume that there is
no current flowing through the neutral conductor.
Balanced 3-phase Wye system with 2 CTs
The current for the unconnected current input is calculated so that the vector sum for all
three phase currents equal zero.
Balanced 3-phase Wye or Delta system with 1 CT
The currents for the unconnected current inputs are calculated so that their magnitude
and phase angle are identical and equally distributed, and the vector sum for all three
phase currents equal zero.
NOTE: You must always use 3 CTs for 3-phase 4-wire center-tapped Delta or
center-tapped open Delta systems.
Control power wiring
For wiring instructions and safety precautions, see the meter installation sheet that was
The meter can be powered from an AC or DC power source.
•
•
•
•
L1 and L2 are non-polarized. If using an AC power supply with neutral, connect
neutral to the meter’s L2 terminal.
Always use a fuse on L1. Fuse L2 when connecting an ungrounded neutral to the
control power.
If using a control power transformer, fuse both primary and secondary sides of the
transformer.
The fuses / circuit breakers must be rated for the installation voltage and sized for the
available fault current.
Communications
This section provides additional information about the communications ports and
topologies supported by the meter. You must wire and configure the RS-485 port in order
to communicate with the meter.
Serial communications
The meter supports serial communications through the RS-485 port. Up to 32 devices can
be connected on a single RS-485 bus.
In an RS-485 network, there is one master device, typically an Ethernet to RS-485
gateway. It provides the means for RS-485 communications with multiple slave devices
(for example, meters). For applications that require only one dedicated computer to
communicate with the slave devices, an RS-232 to RS-485 converter can be used as the
master device.
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Chapter 3—Hardware Reference
RS-485 wiring
Connect the devices on the RS-485 bus in a point-to-point configuration, with the (+) and
(-) terminals from one device connected to the corresponding (+) and (-) terminals on the
next device.
RS-485 wiring
C
-
+
120 Ω
Master
Slaves
-
D0 (-)
+
D1 (+)
120 Ω
RS-485 cable
Use a shielded 1.5 twisted pair or 2 twisted pair RS-485 cable to wire the devices. Use
one twisted pair to connect the (+) and (-) terminals, and use the other insulated wire to
connect the C terminals.
RS-485 terminals
C
Common. This provides the voltage reference (zero volts) for the data plus and data minus signals.
Shield. Connect the bare wire to this terminal to help suppress signal noise that may be present.
Ground the shield wiring at one end only (either at the master or the last slave device, but not both).
Data minus. This transmits/receives the inverting data signals.
Data plus. This transmits/receives the non-inverting data signal.
-
+
RS-485 maximum cable length
The total distance for devices connected on an RS-485 bus should not exceed 1200 m
(4000 ft).
RS-485 network configuration
After you have wired the RS-485 port and powered up the meter, you must configure the
serial communications port in order to communicate with the meter.
Each device on the same RS-485 communications bus must have a unique address and
all connected devices must be set to the same protocol, baud rate, and parity (data
format).
NOTE: To communicate with the meter using ION Setup, you must set the parity to
“None” for all devices in the RS-485 network.
For meters that do not have a display, you must first wire and configure each one
separately before connecting these meters to the same RS-485 bus.
26
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Chapter 3—Hardware Reference
Related topics
•
To configure RS-485 communications, see “Setting up serial communications” on
Digital outputs
The meter is equipped with a digital output port (D1). You can configure the digital output
for use in the following application:
•
energy pulsing applications, where a receiving device determines energy usage by
counting the k_h pulses (k_h = kWh, kVARh or kVAh depending on the energy
parameter selected) coming from the meter’s digital output port.
The digital output can handle voltages less than 40 V DC. For higher voltage applications,
use an external relay in the switching circuit.
Digital output connections
D1
-/C
(57)
(60)
< 20mA
< 40Vdc
Related topics
•
See “Digital output applications” on page 47 for digital output use and configuration
details.
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Chapter 3—Hardware Reference
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Chapter 4—Front panel display and meter setup
Chapter 4—Front panel display and meter setup
The front panel display lets you use the meter to perform various tasks such as setting
up the meter, displaying data screens, acknowledging alarms, or performing resets.
Parts of the display
A
B
C
D
E
F
Navigation / menu selection buttons
Heartbeat / communications LED (green)
Alarm / energy pulsing LED (orange)
Navigation symbols or menu options
Right notification area
G
F
E
Screen title
G
Left notification area
D
C
B
A
LED indicators
The meter has two LED indicators on the front panel.
Front panel LEDs
Alarm / energy pulsing LED (orange)
Heartbeat / communications LED (green)
C
B
Heartbeat / communications LED
The (green) heartbeat / communications LED blinks at a slow, steady rate to indicate
the meter is operational. The LED flashes at a variable, faster rate when the meter is
communicating over a Modbus serial communications port.
You cannot configure this LED for other purposes.
NOTE: A heartbeat LED that remains lit and does not blink (or flash) indicates a
possible hardware problem. In this case, power down the meter and reapply power. If
the LED still does not blink or flash, contact Technical Support.
Alarm / energy pulsing LED modes
The (orange) alarm / energy pulsing LED can be configured for alarm notification or
energy pulsing.
•
When configured for alarm notification, this LED flashes when a high, medium or
low priority alarm is active. This provides a visual indication of an active alarm
condition, or an inactive but unacknowledged high priority alarm.
•
When configured for energy pulsing, this LED flashes at a rate proportional to the
amount of energy consumed. This is typically used to verify the meter’s accuracy.
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Chapter 4—Front panel display and meter setup
PowerLogic™ PM5100 series user guide
Related topics
•
•
•
front panel to switch the LED mode for alarming or energy pulsing applications.
to switch the LED mode for alarming or energy pulsing applications.
pulsing LED’s behavior when it is configured for alarm notification.
Notification icons
To alert you about meter state or events, notification icons appear at the top left or top
right corner of the display screen.
Notification icons
Icon
Description
The wrench icon indicates that the power meter requires maintenance. See “Maintenance
The alarm icon indicates an alarm condition has occurred. See “About Alarms” on page 51
The blinking heartbeat icon indicates that the power meter is in normal operating condition.
Meter screen menus
All meter screens are grouped logically, according to their function. You can access any
available meter screen by first selecting the Level 1 (top level) screen that contains it.
Level 1 screen menus - IEEE display mode
Amps
Clock
Energy
PF
Hz
THD
Harm
Unbal
Volts
Maint
Power
Timer
D Out
Alarm
MnMx
Level 1 screen menus - IEC display mode
F
I
U-V
PQS
E
PF
D Out
THD
Harm
Unbal
Clock
Maint
Timer
Alarm
MnMx
Use the buttons to navigate the different meter screens. The navigation symbols and
their functions are explained below:
Navigation symbols
Symbol
Description
Scroll right and display more menu items
Exit screen and go up one level
Move cursor down the list of options or display more items below
Move cursor up the list of options or display more items above
Move cursor one character to the left
Increase the highlighted value or show the next item in the list
Show the previous item in the list
Front panel buttons
When you reach the last screen, press again to cycle through the screen menus.
30
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Chapter 4—Front panel display and meter setup
Menu tree
This summarizes the meter screens (IEEE menus shown, with the corresponding IEC
PM5100 display screen menus
Level
1
Level
2
Level
3
Amps
(I)
Amps (I)
Dmd
IAvg Pk DT
Volts
(U-V)
V L-L (U)
V L-N (V)
Power
(PQS)
Power (PQS)
Phase
Active (P) Reac (Q) Appr (S)
Dmd
Wd (Pd)
VARd (Qd)
VAd (Sd)
Wd (Pd)
VARd (Qd)
VAd (Sd)
Pk DT
Pk DT
Pk DT
Energy
(E)
Wh
VAh
VARh
PF
True
Disp
Hz
(F)
(frequency, average voltage, average current, power factor)
Amps (I) V L-L (U) V L-N (V)
Amps (I) V L-L (U) V L-N (V)
THD
THD
thd
V L-L (U)
V L-N (V)
Amps (I)
TDD
Harm
Unbal
MnMx
(% volts line-to-line, volts line-to-neutral, amps)
Amps (I)
Volts (U-V)
Power (PQS)
PF
V L-L (U) V L-N (V)
Active (P) Reac (Q) Appr (S)
True
Disp
Hz (F)
THD
THD
thd
Amps (I) V L-L (U) V L-N (V)
Amps (I) V L-L (U) V L-N (V)
Amps (I) V L-L (U) V L-N (V)
Unbal
Alarm
D Out
Active
Hist
Count
Unack
D1
Timer
Maint
Load
Oper
Reset
Setup
Meter
Comm
Alarm
I/O
Basic
Advan
Dmd
Pass
1-Sec
LED
Unary
D Out
HMI
Displ
Region
Clock
Diag
Info
Meter
Cl Pwr
PhAng
Clock
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Chapter 4—Front panel display and meter setup
PowerLogic™ PM5100 series user guide
Meter setup screen navigation
The meter’s front panel buttons and display screen allow you to navigate and configure
the meter’s setup parameters. The following illustration shows one of the meter setup
screens.
Basic setup screen
In this example, the down arrow ( ) indicates there are more parameters below the
selected option ( ). Press the down arrow button to display additional parameters. The
down arrow disappears when the last item in the list is selected, and there are no more
parameters to display.
Front panel meter setup
Meter configuration can be performed directly through the front panel buttons or
remotely through software. This section contains instructions on setting up the meter
using the front panel.
Related topics
•
Configuring the basic setup parameters
Proper configuration of the meter’s basic setup parameters is essential for accurate
measurement and calculations. Use the Basic Setup screen to define the electrical
power system that the meter is monitoring.
NOTICE
UNINTENDED EQUIPMENT OPERATION
After modifying any basic setup parameter:
• Verify all standard alarms settings are correct and make adjustments as necessary.
• Re-enable all configured alarms.
Failure to follow these instructions can result in incorrect alarm functions.
If standard (1-sec) alarms have been configured and you make subsequent changes to
the meter’s basic setup, all alarms are disabled to prevent undesired alarm operation.
After saving the changes, confirm all configured standard alarm settings are still valid,
reconfigure them as required, and re-enable the alarms.
32
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Chapter 4—Front panel display and meter setup
Basic setup menu tree
Maint
Reset
Setup
Meter
Basic
Comm
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Navigate to Meter > Basic.
4. Move the cursor to point to the parameter you want to modify, then press Edit.
5. Modify the parameter as required, then press OK.
6. Move the cursor to point to the next parameter you want to modify, press Edit,
make your changes, then press OK.
Basic setup parameters
Parameter
Values
Description
Select the power system type (power transformer) the meter is wired to.
1PH2W LN
Single-phase 2-wire line-to-neutral
Single-phase 2-wire line-to-line
1PH2W LL
1PH3W LL with N
3PH3W Dlt Ungnd
3PH3W Dlt Crnr Gnd
3PH3W Wye Ungnd
3PH3W Wye Gnd
3PH3W Wye Res Gnd
3PH4W Opn Dlt Ctr Tp
3PH4W Dlt Ctr Tp
3PH4W Wye Ungnd
3PH4W Wye Gnd
3PH4W Wye Res Gnd
Single-phase 3-wire line-to-line with neutral
3-phase 3-wire ungrounded delta
3-phase 3-wire corner grounded delta
3-phase 3-wire ungrounded wye
3-phase 3-wire grounded wye
Power System
3-phase 3-wire resistance-grounded wye
3-phase 4-wire center-tapped open delta
3-phase 4-wire center-tapped delta
3-phase 4-wire ungrounded wye
3-phase 4-wire grounded wye
3-phase 4-wire resistance-grounded wye
Select how many voltage transformers (VT) are connected to the electrical power
system.
Direct Con
2VT
Direct connect; no VTs used
VT Connect
2 voltage transformers
3VT
3 voltage transformers
VT Primary (V)
1 to 1000000
100, 110, 115, 120
Enter the size of the VT primary, in Volts.
Select the size of the VT secondary, in Volts
VT Secondary (V)
Define how many current transformers (CT) are connected to the meter, and
which terminals they are connected to.
I1
1 CT connected to I1 terminal
I2
1 CT connected to I2 terminal
I3
1 CT connected to I3 terminal
CT on Terminal
I1 I2
I1 I3
I2 I3
I1 I2 I3
1 to 32767
1, 5
2 CT connected to I1, I2 terminals
2 CT connected to I1, I3 terminals
2 CT connected to I2, I3 terminals
3 CT connected to I1, I2, I3 terminals
Enter the size of the CT primary, in Amps.
Select the size of the CT secondary, in Amps.
CT Primary (A)
CT Secondary (A)
Select the frequency of the electrical power
system, in Hz.
Sys Frequency (Hz)
Phase Rotation
50, 60
ABC, CBA
Select the phase rotation of the 3-phase system.
7. Press
to exit. Press Yes to save your changes.
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Chapter 4—Front panel display and meter setup
PowerLogic™ PM5100 series user guide
Related topics
•
instructions.
Communications setup
After wiring the meter’s serial communications port, you can configure these ports so
you can connect to the meter remotely and use device configuration software such as
ION Setup to configure the meter.
Based on the reference model, the meter is equipped with the following communication
ports:
Communication ports
Reference Models
Communication
PM5100
PM5110
PM5111
-
RS-485
RS-485
Setting up serial communications
The Serial Port setup screen allows you to configure the meter’s RS-485
communications port so you can use software to access the meter’s data or configure
the meter remotely.
Serial communications setup menu tree
Maint
Reset
Setup
Meter
Comm
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Press Comm.
4. Move the cursor to point to the parameter you want to modify, then press Edit.
5. Modify the parameter as required, then press OK.
6. Move the cursor to point to the next parameter you want to modify, press Edit,
make your changes, then press OK.
Communications setup parameters
Parameter
Values
Description
The communications format used to transmit data. The
protocol must be the same for all devices in a
communications loop.
Protocol
Modbus
1 to 247
Set the address for this device. The address must be
unique for each device in a communications loop. For
Jbus protocol, set the device ID to 255.
Address
Baud Rate
Parity
Select the speed for data transmission. The baud rate
must be the same for all devices in a communications
loop.
9600, 19200, 38400
Even, Odd, None
Select None if the parity bit is not used. The parity
setting must be the same for all devices in a
communications loop.
7. Press
to exit. Press Yes to save your changes.
34
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Chapter 4—Front panel display and meter setup
HMI settings
The HMI (human-machine interface) setup screens allow you to:
•
•
•
control the general appearance and behavior of the display screens,
change the regional settings, or
change the meter passwords.
Setting up the display
You can change the display screen’s contrast or the screen backlight and timeout
settings.
Display setup menu tree
Maint
Reset
Setup
Meter
Comm
Alarm
I/O
Displ
Region
Pass
HMI
Clock
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Navigate to HMI > Displ.
4. Move the cursor to point to the parameter you want to modify, then press Edit.
5. Modify the parameter as required, then press OK.
6. Move the cursor to point to the next parameter you want to modify, press Edit,
make your changes, then press OK.
Display setup parameters
Parameter
Values
Description
Increase or decrease the value to increase or
decrease the display contrast.
Contrast
1 - 9
Set how long (in minutes) before the backlight
turns off after a period of inactivity. Setting this to
“0” disables the backlight timeout feature (i.e.,
backlight is always on).
Backlight Timeout (min)
Screen Timeout (min)
0 - 60
Set how long (in minutes) before the screen turns
off after a period of inactivity. Setting this to “0”
disables the screen timeout feature (i.e., display is
always on).
0 - 60
7. Press
to exit. Press Yes to save your changes.
Setting up regional settings
You can change the regional settings to localize the meter screens and display data in
a different language, using local standards and conventions.
NOTE: In order to display a different language other than those listed in the Language
setup parameter, you need to download the appropriate language file to the meter
using the appropriate firmware upgrade tool such as DLF3000. See “Downloading
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Chapter 4—Front panel display and meter setup
PowerLogic™ PM5100 series user guide
Regional settings menu tree
Maint
Reset
Setup
Meter
Comm
Alarm
I/O
Displ
Region
Pass
HMI
Clock
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Navigate to HMI > Region.
4. Move the cursor to point to the parameter you want to modify, then click Edit.
5. Modify the parameter as required, then press OK.
6. Move the cursor to point to the next parameter you want to modify, press Edit,
make your changes, then press OK.
Regional settings setup parameters
Parameter
Values
Description
English US, French, Spanish, German, Select the language you want the meter to
Language
Italian, Portuguese, Chinese, Russian
display.
Set how you want the date to be displayed,
e.g., month/day/year.
Date Format
Time Format
HMI Mode
MM/DD/YY, YY/MM/DD, DD/MM/YY
Set how you want the time to be displayed,
e.g., 17:00:00 or 5:00:00 PM.
24Hr, AM/PM
IEC, IEEE
Select the standards convention used to
display menu names or meter data.
7. Press
to exit. Press Yes to save your changes.
Setting up the screen passwords
This can only be configured through the front panel. The factory-default setting for all
passwords is “0000”. Changing the default password for screens that are password-
protected prevents unauthorized personnel from accessing certain screens such as the
diagnostics and reset screens.
NOTICE
LOST DATA
Record your meter's screen password information in a secure location.
Failure to follow these instructions can result in data loss.
If you lose your password, you must return the meter for factory reconfiguration, which
resets your device to its factory defaults and destroys all logged data.
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Chapter 4—Front panel display and meter setup
Password setup menu tree
Maint
Reset
Setup
Meter
Comm
Alarm
I/O
Displ
Region
Pass
HMI
Clock
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Navigate to HMI > Pass.
4. Move the cursor to point to the parameter you want to modify, then press Edit.
5. Modify the parameter as required, then press OK.
6. Move the cursor to point to the next parameter you want to modify, press Edit,
make your changes, then press OK.
Password setup parameters
Parameter
Values
Description
Sets the password for accessing the meter setup
screens (Maint > Setup).
Setup
0000 - 9999
Sets the password for resetting the meter’s
accumulated energy values.
Energy Resets
Demand Resets
Min/Max Resets
Diagnostics
0000 - 9999
0000 - 9999
0000 - 9999
0000 - 9999
Sets the password for resetting the meter’s
recorded peak demand values.
Sets the password for resetting the meter’s
recorded minimum and maximum values.
Sets the password for accessing the meter’s
diagnostics screens.
7. Press
to exit. Press Yes to save your changes.
Lost password
If you lose your password, contact technical support for instructions on how to return
your meter for factory reconfiguration.
•
•
(00) + 1 (250) 544-3010
NOTE: Be sure to include your meter’s serial number in your e-mail or have it readily
available when calling technical support.
Setting the clock
The Clock setup screens allow you to set the meter’s date and time.
Clock setup menu tree
Maint
Reset
Setup
Meter
Comm
Alarm
I/O
HMI
Clock
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
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PowerLogic™ PM5100 series user guide
3. Navigate to Clock.
4. Move the cursor to point to the parameter you want to modify, then press Edit.
5. Modify the parameter as required, then press OK.
6. Move the cursor to point to the next parameter you want to modify, press Edit,
make your changes, then press OK.
Clock setup parameters
Parameter
Format
Description
Set the current date using the format displayed
on screen, where MM = month, DD = day and
YY = year.
Date
Time
MM/DD/YY
Use the 24-hour format to set the current time
HH:MM:SS (24 hour format), (GMT or local) in hours (HH), minutes (MM) and
seconds (SS).
Select GMT if you set the current time to
Meter Time
GMT, Local
-
Greenwich Mean Time zone. Otherwise, select
Local.
Set the GMT Offset between ± 00.0 and ± 12.0
hrs.
GMT Offset (h)
7. Press
to exit. Press Yes to save your changes.
Related topics
•
format of the displayed date and time.
Advanced setup
The advanced setup screens let you change the meter name, set up a timer for
monitoring load current, and specify the minimum demand current for total demand
distortion calculations.
•
•
Load Timer Setpt: specifies the minimum current at the load before the timer starts.
Pk I dmd for TDD: specifies the minimum current demand value to consider for total
demand distortion calculations.
Advanced setup menu tree
Maint
Reset
Setup
Meter
Basic
Advan
Comm
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Navigate to Meter > Advan.
4. Move the cursor to point to the parameter you want to modify, then press Edit.
5. Modify the parameter as required, then press OK.
6. Move the cursor to point to the next parameter you want to modify, press Edit,
make your changes, then press OK.
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Chapter 4—Front panel display and meter setup
Advanced setup parameters
Parameter
Values
Description
This label identifies the device, e.g., “Power
Meter”. You cannot use the front panel to edit
this parameter. Use ION Setup to change the
device label.
Label
-----
Specifies the minimum average current at the
load before the timer starts. The meter begins
counting the operating time whenever the
readings are equal to or above this average
current threshold.
Load Timer Setpt (A)
0 - 99999
Specifies the minimum peak current demand
at the load for inclusion in total demand
distortion (TDD) calculations. If the load
current is below the minimum peak current
demand threshold, the meter does not use the
readings to calculate TDD. Set this to “0”
(zero) if you want the power meter to use the
metered peak current demand for this
calculation.
Pk I dmd for TDD (A)
0 - 99999
7. Press Yes to save your changes.
Related topics
•
on how the meter calculates TDD.
Setting up the alarm / energy pulsing LED
The LED setup screen allows you to configure the alarm / energy pulsing LED for
alarming or energy pulsing application.
Alarm / energy pulsing LED settings menu tree
Maint
Reset
Setup
Meter
Comm
Alarm
I/O
LED
D out
HMI
Clock
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Navigate to I/O > LED.
4. Press Edit.
5. Press or to modify the parameter as required, then press OK.
LED setup parameter
Parameter
Values
Description
Off disables the LED.
Mode
Off, Alarm, Energy
Alarm sets the LED for alarm notification.
Energy sets the LED for energy pulsing.
6. Press
to exit. Press Yes to save your changes.
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Chapter 4—Front panel display and meter setup
PowerLogic™ PM5100 series user guide
Related topics
•
the LED for alarms.
Output setup
The meter’s input/output (I/O) ports extend the capabilities of the meter. The I/O ports
can be configured using the front panel or ION Setup.
Related topics
•
instructions using the front panel.
•
meter’s I/O ports.
Demand setup
Demand is a measure of average consumption over a fixed time interval.
Use the Demand setup screens to define power demand, current demand or input
metering demand.
Demand setup menu tree
Maint
Reset
Setup
Meter
Comm
Alarm
I/O
Basic
Advan
Dmd
HMI
Clock
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Navigate to Meter > Dmd.
4. Move the cursor to select Power Demand or Current Demand.
5. Move the cursor to point to the parameter you want to modify, then press Edit.
6. Modify the parameter as required, then press OK.
7. Move the cursor to point to the next parameter you want to modify, press Edit,
make your changes, then press OK.
Power or current demand setup parameters
Parameter
Values
Description
Timed Sliding Block
Timed Block
Timed Rolling Block
Cmd Sync Block
Cmd Sync Roll Block
Clock Sync Block
Clock Sync Roll Block
Thermal
Method
Interval (min)
0 - 60
Set the demand interval, in minutes.
Applies only to rolling block methods.
Subinterval (min)
0 - 60
Define how many subintervals the demand
interval should be equally divided into.
40
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Chapter 4—Front panel display and meter setup
Power or current demand setup parameters (continued)
Parameter
Values
Description
Select which digital output the end of
demand interval pulse should be sent to.
Select Dig Output
None, Digital Output D1
Applies only to clock sync methods (these
synchronize the demand interval to the
meter’s internal clock).
Clock Sync Time
0 - 2359
Define what time of day you want to
synchronize the demand
8. Press Yes to save your changes.
Alarms setup
An alarm is the meter’s means of notifying you when an alarm condition is detected,
such as an error or event that falls outside of normal operating conditions.
Related topics
•
instructions.
Remote Meter Setup
You can use ION Setup to remotely access the meter.
For more information on the ION setup configuration, please refer to ION Setup 3.0
Device configuration guide.
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PowerLogic™ PM5100 series user guide
42
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Chapter 5—Viewing Meter Data
Chapter 5—Viewing Meter Data
You can view meter data from the meter’s front panel display, a web browser, or
through software.
Viewing meter data from the front panel
The Summary screen displays real-time values for average voltage and current (Vavg,
Iavg), total power (Ptot) and energy consumption (E Del).
Summary screen
A
B
Menu selection buttons
Scroll right navigation button
A
B
Displaying data screens
To display data screens, press the button below the appropriate menu. To see more
menu items, press the navigation button.
Related topics
•
menu navigation.
Meter data display screens
The screen menu items are listed below. The titles listed are for the HMI mode in IEEE,
with the corresponding titles in IEC mode in square brackets [ ].
Related topics
•
mode.
Amps [I]
Phase
Instantaneous current measurements for each phase and
neutral.
Summary of peak current demand values at the last demand
interval for each phase and neutral.
Dmd
Real-time demand (Pres), peak demand (Peak) and predicted
demand (Pred) for the present interval. Average demand for the
previous interval (Last).
IAvg, Ia [I1], Ib [I2], Ic [I3], In, Ig
Pk DT
Date and timestamp for the peak demand readings.
Ig
Average (Iavg), neutral (In) and residual/ground (Ig) current
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PowerLogic™ PM5100 series user guide
Related topics
•
Volts [U-V]
V L-L [U]
V L-N [V]
Line-to-line voltage for each phase.
Line-to-neutral voltage for each phase.
Harm
V L-L [U]
Line-to-line voltage harmonics data: Numeric magnitude and
angle for the fundamental harmonic, and graphical
representation of harmonics for the 3rd to 11th and 7th to 15th
odd harmonics for each line-to-line phase voltage.
Fund, 3-11, 7-15
V L-N [V]
Fund, 3-11, 7-15
Amps [I]
Fund, 3-11, 7-15
Line-to-neutral voltage harmonics data: Numeric magnitude and
angle for the fundamental harmonic, and graphical
representation of harmonics for the 3rd to 11th and 7th to 15th
odd harmonics for each line-to-neutral phase voltage.
Current harmonics data: Numeric magnitude and angle for the
fundamental harmonics, and graphical representation of
harmonics for the 3rd to 11th and 7th to 15th odd harmonics for
each phase current.
TDD
Total demand distortion for each phase voltage.
Related topics
•
Power [PQS]
Summary of real-time power consumption values for total active
power [Ptot] in kW, total reactive power [Qtot] in kVAR, and total
apparent power [Stot] in kVA.
Power [PQS]
Phase
Per phase (A [P1], B [P2], C [P3]) and total (Total [Ptot]) power
values for active power in kW, reactive power in kVAR and
apparent power in kVA.
Active [P], Reac [Q], Appr [S]
Summary of peak power demand values in the previous (Last)
demand interval period for active power in kW, reactive power in
kVAR and apparent power in kVA.
Dmd
Total and per phase (A [1], B [2], C [3]) peak power demand
values in the previous (Last) demand interval for active power
demand (Wd [P]), reactive power demand (VARd [Q]) and
apparent power demand (VAd [S]).
Wd [Pd], VARd [Qd], VAd [Sd]
Each of these sub-screens (total and per phase demand) display
power demand values for the current (Pres) demand interval,
predicted (Pred) demand based on the current power
consumption rate, demand for the previous (Last) demand
interval period, and the recorded peak (Peak) power demand
value.
Tot, A [P1], B [P2], C [P3]
Pk DT
Date and timestamp for the peak (Peak) power demand value.
Related topics
•
Energy [E]
Wh
Delivered (Del), received (Rec), delivered minus received (D+R)
and delivered minus received (D-R) accumulated values for real
energy (Wh), apparent energy (VAh) and reactive energy
(VARh).
VAh
VARh
PF
True
Disp
Per phase and total true power factor values and sign.
Per phase and total displacement power factor values and sign.
Hz [F]
Frequency (Freq), average voltage and current (Vavg, Iavg) and power factor (PF) values.
44
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Chapter 5—Viewing Meter Data
THD
THD
THD (ratio of harmonic content to the fundamental) for current,
line-to-line voltage, and line-to-neutral voltage.
Amps [I], V L-L [U], V L-N [V]
Amps [I], V L-L [U], V L-N [V]
thd
thd (ratio of harmonic content to the rms value of total harmonic
content) for current, line-to-line voltage, and line-to-neutral
voltage.
Related topics
•
Unbal
Percent unbalance readings for line-to-line voltage (V L-L [U]), line-to-neutral voltage (V L-N [V]) and current
(Amps [I]).
MnMx
Summary of maximum values for line-to-line voltage, line-to-
neutral voltage, phase current and total power.
MnMx
Amps [I]
Volts
Minimum and maximum values for phase current.
Minimum and maximum values for line-to-line voltage and line-
to-neutral voltage.
V L-L, V L-N
Power
PF
Minimum and maximum values for active, reactive, and apparent
power.
Active, Reac, Apr
True, Disp
Minimum and maximum values for true and displacement PF and
PF sign.
Hz
Minimum and maximum values for frequency.
THD
Minimum and maximum values for total harmonic distortion (THD
or thd).
THD, thd
THD or thd minimum and maximum values for phase or neutral
current, line-to-line voltage and line-to-neutral voltage.
Amps, V L-L, V L-N
Unbal
Minimum and maximum values for current unbalance, line-to-line
voltage unbalance and line-to-neutral voltage unbalance..
Amps, V L-L, V L-N
Alarm
Lists all active alarms, past alarms (Hist), the total number each
standard alarm has been tripped (Count), and all
unacknowledged alarms.
Active, Hist, Count, Unack
Related topics
•
D Out
Current status (on or off) of the selected digital output. Counter
shows the total number of times an off-to-on change of state is
detected. Timer shows the total time (in seconds) that the digital
output is in the on state.
D Out
Related topics
•
Timer
Real-time counter that keeps track of the total number of days,
hours, minutes and seconds an active load is connected to the
meter inputs.
Load
Real-time counter for the total number of days, hours, minutes
and seconds the meter has been powered.
Oper
.
Maint
Reset
Screens to perform global or single resets.
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Chapter 5—Viewing Meter Data
PowerLogic™ PM5100 series user guide
Maint
Setup
Setup screens for meter configuration.
Meter, Comm, Alarm, I/O, HMI, Clock
Info, Meter, Cl Pwr, PhAng
Diag
Diagnostic screens provide meter information, status and event
data for troubleshooting. The PhAng screen displays a graphical
representation of the power system the meter is monitoring.
Related topics
•
•
•
Clock
Meter date and time (local or GMT).
Using ION Setup to view or modify configuration data
You can use ION Setup to view or modify the meter setup parameters.
For more information on configuration, see ION Setup 3.0 Device configuration guide.
Using software to view meter data
You can view meter data using energy management software such as Struxureware
Power Monitoring Expert or Struxureware Power SCADA. Refer to the software
documentation for details.
46
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Chapter 6—Input / Output
PowerLogic™ PM5100 series user guide
Chapter 6—Input / Output
This section describes the meter’s output features.
The meter is equipped with one digital output port.
After you wire the meter’s output ports, you can configure the port so you can use the
meter to perform I/O functions.
Digital output applications
The digital output can be used in energy pulsing applications, where a receiving device
determines energy usage by counting the kWh pulses coming from the meter’s digital
output port.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe electrical
work practices. See NFPA 70E in the USA or applicable local standards.
• Turn off all power supplying this device before working on it.
• Always use a properly rated voltage sensing device to confirm that all power is off.
• Do not exceed the device’s ratings for maximum limits.
• Do not use this device for critical control or protection applications where human or
equipment safety relies on the operation of the control circuit.
Failure to follow these instructions will result in death or serious injury.
NOTE: Be aware that an unexpected change of state of the digital outputs may result
when the supply power to the meter is interrupted or after a meter firmware upgrade.
Related topics
•
the digital outputs.
Digital output setup
The digital output port (D1) can be configured using the front panel or ION Setup.
47
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Chapter 6—Input / Output
PowerLogic™ PM5100 series user guide
Configuring digital outputs using the front panel
You can use the front panel to configure the digital outputs.
Digital output setup menu tree
Maint
Reset
Setup
Meter
Comm
Alarm
I/O
LED
D Out
HMI
Clock
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Navigate to I/O > D Out.
4. Press Edit.
5. Press + and - to scroll through the modes None or Energy.
NOTE: If Edit is not displayed, it means the parameter is either read-only or can only
be modified through software.
6. Press OK.
7. Press Edit and modify the parameter as required, then press OK.
8. Move the cursor to point to the next parameter you want to modify, press Edit,
make your changes, then press OK.
9. Press
to exit. Press Yes to save your changes.
NOTE: Be aware that an unexpected change of state of the relay outputs may result
when the supply power to the meter is interrupted or after a meter firmware upgrade.
Alarm / energy pulsing LED setup
The meter’s LED can be configured for alarm indication or energy pulsing.
When set to detect alarms, the LED blinks to indicate an alarm condition. See “Alarm
Priorities” on page 53 for a description of the LED behavior based on different alarms.
When the LED is set to energy pulsing, the meter sends a readable pulse or signal
based on the measured energy. This pulse can be used for accuracy verification or as
an input to another energy monitoring system. The meter uses the pulse constant
setting in pulses per k_h to determine the frequency and number of pulses sent to the
LED (where k_h = kWh, kVARh or kVAh depending on the energy parameter selected).
The LED setup screen allows you to configure the alarm / energy pulsing LED for
alarming or energy pulsing applications.
Configuring the LED or digital output for energy pulsing using
ION Setup
You can use the ION Setup to configure your meter’s LED or digital output for energy
pulsing.
1. Start ION Setup.
2. Connect to your meter
48
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Chapter 6—Input / Output
3. Navigate to I/O configuration > Energy Pulsing.
4. Select the LED or a digital output to configure and click Edit. The setup screen is
displayed.
5. Enter a descriptive name for the digital output’s Label.
6. Configure the other setup parameters as required.
7. Click Send to save your changes.
Alarm / energy pulsing LED setup parameters available through ION Setup
Parameter
Values
Description
Off disables the LED.
Mode
Off, Alarm, Energy
Alarm sets the LED for alarm notification.
Energy sets the LED for energy pulsing.
When configured for energy pulsing, this
defines how many pulses are sent to the LED
for every 1 kWh, 1 kVARh or 1kVAh of
accumulated energy.
Pulse Wt. (p/k_h) 1 to 9999999
Active Energy Delivered
Active Energy Received
Active Energy Del+Rec
Reactive Energy Delivered
Reactive Energy Received
Reactive Energy Del+Rec
Apparent Energy Delivered
Apparent Energy Received
Apparent Energy Del+Rec
Select which accumulated energy channel to
monitor and use for energy pulsing.
Channel
Related topics
•
pulsing LED’s behavior when it is configured for alarm notification.
Configuring the alarm / energy pulsing LED using the front panel
You can use the front panel display to configure your meter’s LED for alarming or
energy pulsing application.
Alarm / energy pulsing LED settings menu tree
Maint
Reset
Setup
Meter
Comm
Alarm
I/O
LED
D out
HMI
Clock
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0”), then press OK.
3. Navigate to I/O > LED.
4. Move the cursor to point to the parameter you want to modify, then press Edit.
Alarm / energy pulsing LED parameters available through the front panel
Parameter
Values
Description
Disabled turns off the LED completely.
Alarm sets the LED for alarm notification.
Energy sets the LED for energy pulsing.
Mode
Off, Alarm, Energy
When configured for energy pulsing, this setting defines
how many pulses are sent to the LED for every 1 kWh,
1 kVARh or 1kVAh accumulated energy.
Pulse Wt. (p/k_h) 1 to 9999999
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Chapter 6—Input / Output
PowerLogic™ PM5100 series user guide
Alarm / energy pulsing LED parameters available through the front panel
Parameter
Values
Description
Active Del
Active Rec
Active Del + Rec
Reactive Del
Select which accumulated energy channel to monitor and
use for energy pulsing.
Parameter
Reactive Rec
Reactive Del + Rec
Apparent Del
Apparent Rec
Apparent Del + Rec
5. Press or to modify the parameter as required, then press OK.
6. Press to exit. Press Yes to save your changes.
50
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Chapter 7—Alarms
Chapter 7—Alarms
This section describes the alarm features on PM5100 series Power and Energy meters.
About Alarms
!
The
icon appears in the upper-right corner of the meter display when an alarm is
active.
If the energy/alarm LED has been configured for alarms, the energy/alarm LED flashes
information.
The power meter maintains a counter for each alarm to help keep track of the total
Figure 7–1: Alarm Counters
If you make changes to the basic power meter setup, all alarms are disabled to prevent
undesired alarm operation. Confirm alarm configuration and enable required alarms.
NOTE: Only alarms that apply to the selected power system configuration can be
enabled.
The available alarms for this power meter are described in the following sections.
1-Second Alarms
complete list.
Use the display to configure 1-second alarms with the following values:
•
•
•
Enable—disable (default) or enable
Pickup Setpoint (magnitude)
Pickup Time Delay (in seconds)
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Chapter 7—Alarms
•
•
Dropout Setpoint (magnitude)
Dropout Time Delay (in seconds)
Table 7–1: List of Standard 1-Second Over/Under Alarms
Alarm
Number
Alarm
Label
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
Over Current, Phase
Under Current, Phase
Over Current, Neutral
Over Current, Ground
Over Voltage, L-L
Under Voltage, L-L
Over Voltage, L-N
Under Voltage L-N
Over kW
Over kVAR
Over kVA
Lead PF, True
Lag PF, True
Lead PF, Disp
Lag PF, Disp
Over kW Dmd, Pres
Over kW Dmd, Last
Over kW Dmd, Pred
Over kVAR Dmd, Pres
Over kVAR Dmd, Last
Over kVAR Dmd, Pred
Over kVA Dmd, Pres
Over kVA Dmd, Last
Over kVA Dmd, Pred
Over Frequency
Under Frequency
Over Voltage Unbal
Over Voltage THD
Phase Loss
52
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Chapter 7—Alarms
Many of the 1-second alarms are three-phase alarms. Alarm setpoints are evaluated for
each of the three phases individually, but the alarm is reported as a single alarm. The
alarm pickup occurs when the first phase exceeds the alarm pickup magnitude for the
pickup time delay. The alarm is active as long as any phase remains in an alarm state.
The alarm dropout occurs when the last phase drops below the dropout magnitude for the
Figure 7–2: How the power meter handles setpoint-driven alarms
Max2
Max1
Pickup
Setpoint
Dropout
Setpoint
ΔT
ΔT
Pickup Delay
Dropout Delay
EV2
EV1
Alarm Period
EV1—The power meter records the date and time that the pickup setpoint and time delay
were satisfied, and the maximum value reached (Max1) during the pickup delay period
(T). Also, the power meter performs any tasks assigned to the event such as operation
of a digital output.
EV2—The power meter records the date and time that the dropout setpoint and time
delay were satisfied, and the maximum value reached (Max2) during the alarm period.
Unary Alarms
The power meter has four unary alarms. These alarms help alert you when the meter
powers on after a control power loss, when the meter resets for any reason, when the
meter self-diagnostic feature detects a problem, or when the meter detects a phase
rotation different than expected.
Alarm Priorities
Each alarm has a priority level. Use priorities to help distinguish between events that
require immediate action and those that do not require action. See “Setting up the alarm /
energy pulsing LED” on page 39 for information on configuring the alarm LED for alarm
mode.
•
High priority—if a high priority alarm occurs, the display informs you in two ways: the
alarm LED on the display flashes until you acknowledge the alarm, and the alarm icon
blinks while the alarm is active. An alarm message is displayed while the alarm is
for information on acknowledging alarms.
•
Medium priority—if a medium priority alarm occurs, the alarm LED and the alarm
icon blink only while the alarm is active. An alarm message is displayed while the
alarm is active.
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Chapter 7—Alarms
•
•
Low priority—if a low priority alarm occurs, the alarm LED and the alarm icon blink
only while the alarm is active. No alarm message is displayed.
No priority—if an alarm is set up with no priority, no visible representation appears on
the display. Alarms with no priority are not entered in the alarm Log.
If multiple alarms with different priorities are active at the same time, the display shows
the alarms in the order they occurred.
When a pickup event occurs, the active alarm list appears. Press “Detail” to see more
Alarm Setup
Evaluation of all alarms is temporarily suspended while alarm setup screens are
displayed. Evaluation resumes immediately upon exit from alarm setup screens.
To set up standard alarms:
1. Navigate to Maint > Setup.
2. Enter the setup password (default is “0000”), then press OK.
3. Press Alarm.
Use the directions in the following sections to set up alarms.
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Chapter 7—Alarms
Setting Up 1-Second Alarms
To set up a standard alarm:
1. Press 1-Sec. The 1-second
alarm Select screen appears.
2. Press ▼ and ▲ to scroll
through the list of standard 1–
second alarms.
3. Press Edit to select an alarm to
be configured.
4. Press Edit to select Pickup
Setpoint.
5. Press + to increment the active
digit through the numerals 0-9.
6. Press to enter the selected
value for the active digit and
move to the next digit to the left.
7. Continue until all values are
selected, then press OK to
enter the selected number for
the pickup setpoint.
8. For power factor alarms (Lead
PF, True; Lag PF, True; Lead
PF, Disp; and Lag PF, Disp)
press ▼ to select PU Set Point
Lead/Lag, then press Edit. For
other alarms, skip to Step 11.
9. Press + and - to scroll between
Lead and Lag.
10. Press OK to set the pickup set
point lead or lag.
11. Press ▼and follow Steps 4 to
7 for Pickup Time Delay and
Dropout Setpoint.
12. For power factor alarms, press
▼to select DO Set Point
Lead/Lag and follow Steps 10
and 11. For other alarms,
proceed to Step 14.
13. Press ▼and follow Steps 4 to
7 for Dropout Time Delay.
14. Press ▼to select Enable, then
press Edit.
15. Press + and - to scroll between
Yes and No.
16. Press OK to enable or disable
the alarm.
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Chapter 7—Alarms
Setting Up 1-Second Alarms (continued)
17. Press ▼to select Priority, then
press Edit.
18. Press + and - to scroll through
priority options None, High,
Medium, or Low.
NOTE: See “Alarm Priorities”
on page 53 for more
information.
19. Press OK to set the priority.
20. Press ▲ to save all alarm
selections and return to the
previous screen.
21. Press ▲ to save all 1-second
alarm selections.
NOTE: The Over Demand alarms are applicable for systems in which the energy is
delivered to the customer only.
56
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Chapter 7—Alarms
Setting Up Unary Alarms
To set up unary alarms:
1. Press Unary. The unary alarm
Select screen appears.
2. Press ▼ and ▲ to scroll
through the list of unary alarms.
3. Press Edit to select an alarm to
be configured.
4. Press Edit to select Enable.
5. Press + and - to scroll between
Yes and No.
6. Press OK to enable or disable
the alarm.
7. Press ▼ to select Priority.
8. Press + and - to scroll through
priority options Low, None,
High, or Medium.
NOTE: See “Alarm Priorities”
on page 53 for more
information.
9. Press OK to set the priority.
10. Press ▲ to save all alarms
selections and return to the
previous screen.
11. Press ▲ to save all unary
alarm selections.
Viewing Alarm Activity and History
There are two types of alarm entries: primary and secondary. The primary entry identifies
the alarm. The secondary entries provide pickup and dropout information.
The active alarm list holds 40 entries at a time. The list works as a circular buffer,
replacing old entries as new entries over 40 are entered into the alarm event queue. The
information in the alarm event queue reinitializes when the power meter resets.
The alarm history log holds 40 entries. The log also works as a circular buffer, replacing
old entries with new entries. This information is nonvolatile.
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Chapter 7—Alarms
Viewing Active Alarms and Alarm Counters
To view active alarms or alarm counters:
1. Scroll through the menu list at
the bottom of the screen until
you see Alarm.
2. Press Alarm.
3. Press the button beneath
Active or Count.
4. Press ▼ and ▲ to scroll
through the alarm list.
5. Press ▲ to return to the
previous screen.
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Chapter 7—Alarms
Viewing Unacknowledged Alarms and the Alarm History Log
To view the unacknowledged alarms or the alarm history log:
1. Scroll through the menu list at
the bottom of the screen until
you see Alarm.
2. Press Alarm.
3. Press the button beneath
Unack or Hist.
4. Press ▼ and ▲ to scroll
through the list of primary alarm
events.
5. Press Detail to view pickup and
dropout event details.
6. Press ▼ and ▲ to scroll
through the pickup and dropout
event details.
7. For unacknowledged alarms,
press Ack to acknowledge the
alarm.
8. Press ▲ to return to the
alarm list on the previous
screen.
9. For unacknowledged alarms,
follow Steps 4 to 7 until all
alarms are acknowledged.
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Chapter 8—Measurements and calculations
Chapter 8—Measurements and calculations
This section describes how the meter processes measured and calculated data.
Real-time readings
The power and energy meter measures currents and voltages, and reports in real time
the RMS (Root Mean Squared) values for all three phases and neutral. The voltage and
current inputs are continuously monitored at a sampling rate of 64 points per cycle. This
amount of resolution helps enable the meter to provide reliable measurements and
calculated electrical values for various commercial, buildings and industrial
applications.
Related topics
•
To learn how to navigate to the data screens using the front panel, see “Viewing
Energy
The power and energy meter calculates and stores accumulated energy values for real,
reactive, and apparent energy.
You can view accumulated energy from the display. The energy value units
automatically change, based on the quantity of energy accumulated (e.g., from kWh to
MWh, from MWh to GWh, then from GWh to TWh, from TWh to PWh).
Related topics
•
To view energy readings from the front panel display, see “Meter data display
Min/max values
Power factor
The meter’s real-time readings are updated once every 50 cycles for 50 Hz systems, or
once every 60 cycles for 60 Hz systems. When the readings reach their lowest or
highest value, the meter updates and saves these min/max (minimum and maximum)
quantities in non-volatile memory.
Power factor (PF) is the ratio of active power (P) to apparent power (S), and is a
number between zero (0) and one (1). In a purely resistive circuit, PF is equal to 1 (unity
PF). Inductive or capacitive loads increase the reactive power (Q) component in the
circuit which causes the PF to become less than 1.
Power factor can have a positive or negative sign, depending on the type of load or
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PowerLogic™ PM5100 series user guide
Power factor min/max convention
The meter uses the following convention for power factor minimums and maximums:
•
For negative PF readings, the minimum PF value is the measurement closest to -0
for PF readings between -0 to -1. For positive PF readings, the minimum PF value is
the measurement closest to +1 for PF readings between +1 to +0.
•
For negative PF readings, the maximum PF value is the measurement closest to -1
for PF readings between -0 to -1. For positive PF readings, the maximum PF value
is the measurement closest to +0 for PF readings between +1 to +0.
Power factor minimum and maximum
-1.0
1.0
-0.8
.8
-0.6
.6
Positive PF values
[ + ]
Negative PF values
.4
-0.4
[ - ]
.2
-0.2
+0
-0
Maximum PF [ + ]
Minimum PF [ - ]
Power factor sign convention
You can set the power factor sign (PF sign) convention by changing the HMI mode to
either IEC or IEEE.
Power factor sign convention
Reactive
Power In
Reactive
Power In
Quadrant
2
Quadrant
1
Quadrant
2
Quadrant
1
watts negative (–)
vars positive (+)
power factor (–)
watts negative (–)
vars positive (+)
power factor (+)
watts positive (+)
vars positive (+)
power factor (+)
watts positive (+)
vars positive (+)
power factor (–)
Reverse
Power Flow
Normal
Power Flow
Reverse
Power Flow
Normal
Power Flow
Real
Power
In
Real
Power
In
watts negative (–)
vars negative (–)
power factor (–)
watts positive (+)
vars negative (–)
power factor (+)
watts negative (–)
vars negative (–)
power factor (–)
watts positive (+)
vars negative (–)
power factor (+)
Quadrant
3
Quadrant
4
Quadrant
3
Quadrant
4
IEC mode
IEEE mode
IEC mode
In IEC mode, the PF sign follows the direction of power flow. PF sign is positive (+) for
positive (normal) power flow. PF sign is negative (-) for negative (reverse) power flow.
62
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Chapter 8—Measurements and calculations
IEEE mode
In IEEE mode, the PF sign is determined by the type of load (inductive or capacitive)
contributing to the reactive power component of apparent power. PF sign is positive (+)
for capacitive loads (leading power factor). PF sign is negative (-) for inductive loads
(lagging power factor).
Related topics
•
•
Demand
Demand is a measure of average consumption (typically power or current) over a fixed
programmed time interval.
The meter measures instantaneous consumption and can calculate demand using
various methods.
Related topics
•
For instructions on configuring demand using the front panel, see “Demand setup”
Power demand calculation methods
Power demand is calculated by dividing the energy accumulated during a specified
period by the length of that period. How the power meter performs this calculation
depends on the method and time parameters you select (for example, timed rolling
block demand with a 15-minute interval).
To be compatible with electric utility billing practices, the power meter provides the
following types of power demand calculations:
•
•
•
Block interval demand
Synchronized demand
Thermal demand
You can configure the power demand calculation method from the front panel or using
ION Setup.
Block interval demand
For block interval demand method types, you specify a period of time interval (or block)
that the power meter uses for the demand calculation. Select/configure how the power
meter handles that interval from one of these different methods:
•
Timed Sliding Block: Select an interval from 1 to 60 minutes (in 1-minute
increments). If the interval is between 1 and 15 minutes, the demand calculation
updates every 15 seconds. If the interval is between 16 and 60 minutes, the
demand calculation updates every 60 seconds. The power meter displays the
demand value for the last completed interval.
•
•
Timed Block: Select an interval from 1 to 60 minutes (in 1-minute increments). The
power meter calculates and updates the demand at the end of each interval.
Timed Rolling Block: Select an interval and a subinterval. The subinterval must
divide evenly into the interval (for example, three 5-minute subintervals for a
15-minute interval). Demand is updated at the end of each subinterval. The power
meter displays the demand value for the last completed interval.
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Chapter 8—Measurements and calculations
PowerLogic™ PM5100 series user guide
The following illustration shows the different ways power demand is calculated using
the block interval method. In this example, the interval is set to 15 minutes.
Block interval demand example
Demand value is the
average for the last
completed interval
Calculation updates
every 15 seconds
15-minute interval
Time
(sec)
15 30 45 60 . . .
Timed Sliding Block
Demand value is
the average for
the last
completed
interval
Calculation updates at
the end of the interval
15-minute interval
15-minute interval
15-min
Time
(min)
15
30
45
Timed Block
Demand value is
the average for
the last
Calculation updates at the end of
the subinterval (5 minutes)
completed
interval
15-minute interval
Time
(min)
20
25
35
40
30
45
15
Timed Rolling Block
Synchronized demand
You can configure the demand calculations to be synchronized using an external pulse
input, a command sent over communications, or the device’s internal real-time clock.
•
Command synchronized demand: This method allows you to synchronize the
demand intervals of multiple meters on a communications network. For example, if
a programmable logic controller (PLC) input is monitoring a pulse at the end of a
demand interval on a utility revenue meter, you can program the PLC to issue a
command to multiple meters whenever the utility meter starts a new demand
interval. Each time the command is issued, the demand readings of each meter are
calculated for the same interval. When setting up this type of demand, you can
choose Cmd Sync Block (command-synchronized block demand) or Cmd Sync
Roll Block (command-synchronized rolling block demand). Cmd Sync Roll Blk
requires that you specify a subinterval.
•
Clock synchronized demand: This method allows you to synchronize the demand
interval to the power meter’s internal real-time clock. This helps you synchronize the
demand to a particular time, typically on the hour (for example, at 12:00 am). If you
select another time of day when the demand intervals are to be synchronized, the
time must be specified in minutes from midnight. For example, to synchronize at
64
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Chapter 8—Measurements and calculations
8:00 am, select 0800 (in hhmm format). When setting up this type of demand, you
can choose Clock Sync Block (clock-synchronized block demand) or Clock Sync
Roll Blk (clock-synchronized rolling block demand). Clock Sync Roll Blk requires
that you specify a subinterval.
Thermal demand
Thermal demand calculates the demand based on a thermal response, which imitates
the function of thermal demand meters. The demand calculation updates at the end of
each interval. You can set the demand interval from 1 to 60 minutes (in 1-minute
increments).
The following illustration shows the thermal demand calculation. In this example, the
interval is set to 15 minutes.
Thermal demand example
The interval is a window of time that moves across the timeline
99%
90%
Last completed
demand interval
Time
(minutes)
0%
next
15-minute
15-minute
interval
interval
Calculation updates at the end of each interval
Current demand
The power meter calculates current demand using one of the methods described in
“Power demand calculation methods” on page 63. You can set the demand interval
from 1 to 60 minutes in 1-minute increments (for example, 15 minutes).
Predicted demand
The power meter calculates predicted demand for the end of the present interval for
kW, kVAR, kVA and Amps demand. This prediction takes into account the energy
consumption so far within the present (partial) interval and the present rate of
consumption.
Predicted demand is updated every second.
The following illustration shows how a change in load can affect predicted demand for
the interval. In this example, the interval is set to 15 minutes.
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Predicted demand example
Beginning
of interval
15-minute interval
Demand
for last
completed
interval
Predicted demand if load is
added during interval;
predicted demand increases
to reflect increased demand
Partial Interval
Demand
Predicted demand if no load
is added.
Time
1:00
1:06
1:15
Change in Load
Peak demand
The maximum values for the kWD, kVARD, kVAD power, and amps (or peak demand)
is maintained in the meter’s non-volatile memory. The peak for each value is the
highest average reading since the meter was last reset. The power meter also stores
the date and time when the peak demand occurred. In addition to the peak demand, the
power meter also stores the coinciding average 3-phase power factor. The average 3-
phase power factor is defined as “demand kW/demand kVA” for the peak demand
interval.
Related topics
•
To reset peak demand values from the power meter display, see “Single resets” on
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Chapter 9—Power quality
Chapter 9—Power quality
This section describes the meter’s power quality features and how to access power
quality data.
The meter measures voltage and current harmonics up to the 15th harmonic, and
calculates Total Harmonic Distortion (THD) and Total Demand Distortion (TDD and
tdd).
Harmonics overview
Harmonics are integer multiples of the fundamental frequency of the power system.
Harmonics information is valuable for power quality analysis, determining properly
rated transformers, maintenance and troubleshooting.
Harmonics measurements include per-phase magnitudes and angles for the
fundamental and higher harmonics relative to the fundamental frequency. The meter’s
power system setting defines which phases are present and determines how line-to-line
or line-to-neutral voltage harmonics and current harmonics are calculated.
Harmonics data provide information to determine how non-linear loads affect the power
system. For example, power system harmonics can cause current flow on the neutral
conductor, increase heating in electric motors, and eventually damage connected
equipment. Power conditioners or harmonic filters can be used to minimize unwanted
harmonics.
Total Harmonic Distortion and Total Demand Distortion
Total Harmonic Distortion (THD) is a measure of the total per-phase voltage or current
harmonic distortion present in the power system. It provides a general indication of the
quality of a waveform. THD is calculated for each phase of both voltage and current.
Total Demand Distortion (TDD) is the per-phase harmonic current distortion against the
full load demand of the electrical system. TDD indicates the impact of harmonic
distortion in the system. For example, if your system is showing high THD values but a
low demand, the impact of harmonic distortion on your system might be insignificant.
However at full load, the THD value for the current harmonics is equal to TDD, so this
could negatively impact your system.
The meter uses the following series of equations to calculate THD and TDD.
Harmonic content calculations
1. Calculate harmonic content (HC).
HC = H22 + H32 + H42
HC (harmonic content) is equal to the RMS value of all the non-fundamental harmonic
components in one phase of the power system.
2. Calculate the harmonic content for current (HCI).
HCI = HI22 + HI32 + HI42
HCI (harmonic content current) is equal to the RMS value of all the non-fundamental
current harmonic components (HI2…HIn) in one phase of the power system.
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Chapter 9—Power quality
PowerLogic™ PM5100 series user guide
THD and thd calculations
The meter supports two methods of calculating total harmonic distortion: THD and thd.
THD is a quick measure of the total distortion present in a waveform and is the ratio of
harmonic content to the fundamental. The meter uses the following equation to
calculate THD:
HC
H1
--------
THD =
100
Where H1 is equal to the fundamental harmonic.
thd is an alternate method for calculating total harmonic distortion. It uses the RMS
value for the total harmonic content rather than the fundamental content. The meter
uses the following equation to calculate thd:
HC
-----------------------------------------
thd =
100
H12 + HC2
TDD calculation
TDD (total demand distortion) evaluates the harmonic currents between an end user
and a power source. The harmonic values are based on a point of common coupling
(PCC), which is a common point where each user receives power from the power
source. The meter uses the following equation to calculate TDD:
TDD = HCIA2 + HCIB2 + HCIC2 ILoad 100
Where ILoad is equal to the maximum demand load on the power system.
Displaying harmonics data
The meter displays the numeric magnitude and angle of the fundamental (first)
harmonic.
Viewing harmonics using the front panel
You can view harmonics data using the front panel.
1. Navigate to Harm. The Harmonics % screen displays, with the following menu
options:
Harmonics % display screens
IEEE mode
IEC mode
Description
V L-L
U
V
I
Line-to-line voltage harmonics data
V L-N
Amps
TDD
Line-to-neutral voltage harmonics data
Current harmonics data
TDD
Total demand distortion
2. Press the voltage or current harmonics you want to view. The fundamental (1st)
harmonic’s numeric magnitudes and angles for all phases are displayed.
3. Press 3-11 or 7-15 to view the graphs for the 3rd to 11th or 7th to 15th harmonics,
respectively. For example, to display the 7th to 15th harmonics screen, press 7-15.
68
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Chapter 9—Power quality
Example: 7th to 15th harmonics for line-to-neutral voltage
Phase A
Phase B
Phase C
The vertical axis of the harmonics graph indicates the harmonic’s magnitude as a
percentage of the fundamental harmonic, and is scaled based on the largest
harmonic displayed. At the top of each vertical bar is a marker that shows the
maximum value of the harmonic. If the harmonic is greater than the fundamental
harmonic, this marker is triangular-shaped to show that the value is out of range.
Viewing TDD
1. Navigate to Harm > TDD. The Total demand distortion information displays.
Power Quality display screen
IEEE mode
IEC mode
Description
TDD
TDD
Total demand distortion
NOTE: Your meter’s Modbus map includes registers for harmonics data for
integration into your power or energy management system.
2. Press
to return to the main display screens.
Related topics
•
navigation details.
•
the Modbus map.
Viewing THD/thd using the front panel
You can view THD/thd data using the front panel.
1. Navigate to THD. On the THD/thd Select screen, press THD to display values that
use the calculation method based on the fundamental harmonic, or thd to display
values that use the calculation method based on the RMS value of all harmonics in
that phase (including the fundamental).
THD (or thd) display screens
IEEE mode
IEC mode
Description
Amps
I
Total harmonic distortion data for per phase and neutral currents.
Total harmonic distortion data line-to-line voltage.
V L-L
V L-N
U
V
Total harmonic distortion data line-to-neutral voltage.
2. Press the current or voltage THD or thd values you want to view. The total harmonic
distortion percentage values are displayed.
3. Press
to return to the main display screens.
NOTE: Your meter’s Modbus map includes registers for total harmonic distortion data
for integration into your power or energy management system.
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Related topics
•
navigation details.
•
the Modbus map.
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Chapter 10—Verifying accuracy
Chapter 10—Verifying accuracy
All meters are tested and verified at the factory in accordance with International
Electrotechnical Commission (IEC) and American National Standards Institute (ANSI)
standards.
Your digital power meter does not require re-calibration. However, in some installations
a final accuracy verification of the meters is required, especially if the meters will be
used for revenue or billing applications.
Testing overview
The most common method for testing meter accuracy is to apply test voltages and
currents from a stable power source and compare the meter’s readings with readings
from a reference device or energy standard.
Accuracy test requirements
Signal and power source
The meter maintains its accuracy during voltage and current signal source variations
but its energy pulsing output needs a stable test signal to help produce accurate test
pulses. The meter’s energy pulsing mechanism needs approximately 10 seconds to
stabilize after every source adjustment.
The meter must be connected to control power in order to conduct accuracy verification
testing. Refer to your meter’s installation documentation for power supply
specifications.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
Verify the device’s power source meets the specifications for your device’s power
supply.
Failure to follow these instructions will result in death or serious injury
Control equipment
Control equipment is required for counting and timing the pulse outputs from the alarm /
energy pulsing LED or the digital outputs.
•
Most standard test benches have an arm equipped with red light sensors to detect
LED pulses.
NOTE: The optical sensors on the test bench can be disrupted by strong sources of
ambient light (such as camera flashes, florescent tubes, sunlight reflections, floodlights,
etc). This can cause test errors. Use a hood, if necessary, to block out ambient light.
Environment
The meter should be tested at the same temperature as the testing equipment. The
ideal temperature is about 23 °C (73 °F). Make sure the meter is warmed up sufficiently
before testing.
A warm-up time of 30 minutes is recommended before beginning energy accuracy
verification testing. At the factory, the meters are warmed up to their typical operating
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Chapter 10—Verifying accuracy
PowerLogic™ PM5100 series user guide
temperature before calibration to help ensure that the meters will reach their optimal
accuracy at operating temperature.
Most high precision electronic equipment requires a warm up time before it reaches its
specified performance levels. Energy meter standards allow the manufacturers to
specify meter accuracy derating due to ambient temperature changes and self-heating.
Your meter complies with and meets the requirements of these energy metering
standards.
For a list of accuracy standards that your meter complies to, contact your local
Schneider Electric representative or download the meter brochure from
Reference device or energy standard
To help ensure the accuracy of the test, it is recommended that you use a reference
device or reference energy standard with a specified accuracy that is 6 to 10 times
more accurate than the meter under test. Before you start testing, the reference device
or energy standard should be warmed up as recommended by its manufacturer.
NOTE: Verify the accuracy and precision of all measurement equipment used in
accuracy testing (for example, voltmeters, ammeters, power factor meters).
Energy pulsing
You can configure the meter’s alarm /energy LED or one of the digital outputs for
energy pulsing.
•
The meter is equipped with an alarm / energy pulsing LED. When configured for
energy pulsing, the LED emits pulses that are then used to determine the accuracy
of the meter’s energy measurements.
Location of energy pulsing LED
PM5100
Alarm / energy pulsing LED
•
The meter is equipped with a digital output. When you configure the digital output
for energy pulsing, the meter sends voltage pulses to the digital output port, which
are then used to determine the accuracy of the meter’s energy measurements.
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Chapter 10—Verifying accuracy
Verifying accuracy test
The following are guidelines for testing the meter; your meter shop may have specific
testing methods.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe electrical
work practices. See NFPA 70E in the USA or applicable local standards.
• Turn off all power supplying this device before working on it.
• Always use a properly rated voltage sensing device to confirm that all power is off.
• Do not exceed the device’s ratings for maximum limits.
• Verify the device’s power source meets the specifications for your device’s power
supply.
Failure to follow these instructions will result in death or serious injury.
1. Turn off power to all test equipment. Use a properly rated voltage sensing device to
confirm power is off.
2. Connect the test voltage and current source to the reference device or energy
standard. Ensure all voltage inputs to the meter under test are connected in parallel
and all currents inputs are connected in series.
Connecting the meter to the reference standard and test equipment
Reference device or energy standard
I1
I2
I3
+
V1 V2 V3 VN
-
-
-
+
+
Test voltage and
current source
I1
I2
I3
V1 V2 V3 VN
-
-
-
+
+
+
I1
I2
I3
+
-
-
-
+
+
V1V2 V3 VN
Meter under test
3. Connect the control equipment used for counting the standard output pulses using
one of these methods:
Align the red light sensor on the standard test bench armature over the front
panel alarm / energy LED.
Alarm / energy LED
Connect the meter’s digital output to the standard test bench pulse counting
Digital output
connections.
NOTE: When selecting which method to use, be aware that the Alarm / energy LED
and digital outputs have different pulse rate limits. See “Energy pulsing
considerations” on page 75 for details.
4. Before performing the verification test, let the test equipment power up the meter
and apply voltage for at least 30 seconds. This helps stabilize the internal circuitry of
the meter.
5. Set the meter’s power system to 3PH4W Wye Gnd (3-phase, 4 wire Wye with
ground).
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6. Depending on the method selected for counting the energy pulses, configure the
meter’s alarm / energy LED or one of the digital outputs to perform energy pulsing.
Set the meter’s energy pulse constant so it is in sync with the reference test
equipment.
7. Perform accuracy verification on the test points. Run each test point for at least 30
seconds to allow the test bench equipment to read an adequate number of pulses.
Allow 10 seconds of dwell time between test points.
Calculating the number of required pulses
The reference test equipment typically requires you to specify the number of pulses
required for a test duration of “t” seconds.
Use the following formula to calculate the required number of pulses:
t
-----------
Number of pulses = Ptot K
3600
Where:
•
•
•
Ptot = total instantaneous power in kilowatts (kW)
K = the meter’s pulse constant setting, in pulses per kWh
t = test duration, in seconds (typically greater than 30 seconds)
Calculating total power
The test voltage and current source supplies the same test signals to both the energy
reference/standard and the meter under test. Total power is calculated as follows:
For a balanced 3-phase Wye system:
1 kW
1000 W
------------------
Ptot = 3 VLN I PF
NOTE: A balanced 3-phase system assumes the voltage, current and power factor
values are the same for all phases.
For a single-phase system:
1 kW
1000 W
------------------
Ptot = VLN I PF
Where:
•
•
•
•
Ptot = total instantaneous power in kilowatts (kW)
VLN = test point line-to-neutral voltage in volts [V]
I = test point current in amps [A]
PF = power factor
The result of the calculation is rounded up to the nearest integer.
Percent error calculation
For every test point:
EM – ES
---------------------
Energy Error =
100%
ES
74
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Chapter 10—Verifying accuracy
Where:
•
•
EM = energy measured by the meter under test
ES = energy measured by the reference device or energy standard.
NOTE: If accuracy verification reveals inaccuracies in your meter, they may be caused
by typical sources of test errors. If there are no sources of test errors present, please
contact your local Schneider Electric representative.
Energy pulsing considerations
The meter’s alarm / energy LED and digital outputs are capable of energy pulsing within
the following limits:
Energy pulsing limits
Description
Alarm / energy LED
Digital output
Maximum pulse frequency
Minimum pulse constant
Maximum pulse constant
50 Hz
25 Hz
1 pulse per k_h
9,999,999 pulses per k_h
The pulse rate depends on the voltage, current and PF of the input signal source, the
number of phases, and the VT and CT ratios.
If Ptot is the instantaneous power (in kW) and K is the pulse constant (in pulses per
k_h), then the pulse period is:
3600
1
Pulse period (in seconds) = ------------------- = --------------------------------------------------
K Ptot Pulse frequency (Hz)
VT and CT considerations
The test points are always taken at the secondary side, regardless of whether VTs or
CTs are used. Ptot is derived from the values of the voltage and current inputs at the
secondary side, and takes into account the VT and CT ratios.
If VTs and CTs are used, you must include their primary and secondary ratings in the
equation. For example, in a balanced 3-phase Wye system with VTs and CTs:
VT primary
VT secondary
CT primary
CTsecondary
1 kW
1000 W
---------------------------------
---------------------------------- ------------------
PF
Ptot = 3 VLN
I
Total power limit for alarm / energy LED
Given the maximum pulse constant (Kmax) you can enter is 9,999,999 pulses per kWh,
and the maximum pulse frequency for the alarm / energy LED is 83 Hz, the maximum
total power (Max Ptot) the alarm / energy LED’s energy pulsing circuitry can handle is
29.88 Watts:
3600 (Maximum pulse frequency)
3600 83
9,999,999
Maximum Ptot = -------------------------------------------------------------------------------------- = ----------------------- = 0.02988 kW
Kmax
Total power limit for digital output
Given the maximum pulse constant (Kmax) you can enter is 9,999,999 pulses per kWh,
and the maximum pulse frequency for the digital output is 25 Hz, the maximum total
power (Max Ptot) the digital input’s energy pulsing circuitry can handle is 9 Watts:
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Chapter 10—Verifying accuracy
PowerLogic™ PM5100 series user guide
3600 (Maximum pulse frequency)
3600 25
Maximum Ptot = -------------------------------------------------------------------------------------- = ----------------------- = 0.009 kW
Kmax 9,999,999
Test points
The meter should be tested at full and light loads and at lagging (inductive) power
factors to help ensure testing over the entire range of the meter. The test amperage and
voltage input rating are labeled on the meter. Refer to the installation sheet or data
sheet for your meter’s nominal current, voltage and frequency specifications.
Watt-hour test points example
Watt-hour test point
Sample accuracy verification test point
100% to 200% of the nominal current, 100% of the nominal voltage and nominal
frequency at unity power factor or one (1).
Full load
10% of the nominal current, 100% of the nominal voltage and nominal frequency
at unity power factor or one (1).
Light load
Inductive load (lagging
power factor)
100% of the nominal current, 100% of the nominal voltage and nominal frequency
at 0.50 lagging power factor (current lagging voltage by 60° phase angle).
Var-hour test points example
Var-hour test point
Sample accuracy verification test point
100% to 200% of the nominal current, 100% of the nominal voltage and nominal
frequency at zero power factor (current lagging voltage by 90° phase angle).
Full load
10% of the nominal current, 100% of the nominal voltage and nominal frequency
at zero power factor (current lagging voltage by 90° phase angle).
Light load
Inductive load (lagging
power factor)
100% of the nominal current, 100% of the nominal voltage and nominal frequency
at 0.87 lagging power factor (current lagging voltage by 30° phase angle).
Typical sources of test errors
If excessive errors are observed during accuracy testing, examine your test setup and
test procedures to eliminate typical sources of measurement errors:
•
Loose connections of voltage or current circuits, often caused by worn-out contacts
or terminals. Inspect terminals of test equipment, cables, test harness and the meter
under test.
•
•
Meter ambient temperature is significantly different than 23 °C (73 °F).
Floating (ungrounded) neutral voltage terminal in any configuration with unbalanced
phase voltages.
•
Inadequate meter control power, resulting in the meter resetting during the test
procedure.
•
•
•
Ambient light interference or sensitivity issues with the optical sensor.
Unstable power source causing energy pulsing fluctuations.
Incorrect test setup: not all phases connected to the reference device or the energy
standard. All phases connected to the meter under test should also be connected to
the reference meter/standard.
•
Moisture (condensing humidity), debris or pollution present in the meter under test.
76
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Chapter 11—Meter resets
Chapter 11—Meter resets
Reset commands clear the meter’s onboard data logs and related registers. Meter
resets are typically performed after you make changes to the meter’s basic setup
parameters (such as power system, frequency, or PT/CT settings), to clear invalid or
obsolete data in preparation for putting the meter into active service.
The meter reset commands are grouped into two categories: Global Resets and Single
Resets.
NOTICE
LOST DATA
Record all important data before performing meter resets.
Failure to follow these instructions can result in data loss.
Front panel meter reset screens
To access the meter reset screens, navigate to Maint > Reset.
Reset menu tree
Maint
Reset
Setup
Diag
Global resets
Global resets allow you to clear all data of a particular type, such as all energy values or
all minimum/maximum values.
Meter Initialization is a special command that clears the meter’s recorded logged data,
counters and timers. It is common practice to initialize the meter after its configuration is
completed, before adding it to an energy management system.
1. Navigate to Maint > Reset.
2. Move the cursor to point to Global Reset, then press Select.
3. Move the cursor to point to the parameter you want to reset, then press Reset.
Global reset options
Parameter
Description
Clears all data listed in this table (energy, demand, min/max values,
counters, logs, timers, and input metering data).
Meter Initialization
Energies
Clears all accumulated energy values (kWh, kVARh, kVAh).
Clears all the demand registers.
Demands
Min/Max
Clears all the minimum and maximum registers.
Clears all the alarm counters and alarm logs.
Alarm Counts & Logs
4. Enter the reset password (default is “0000”), then press OK.
5. Press Yes to confirm the reset or No to cancel and return to the previous screen.
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Single resets
Single resets allow you to clear data only in a specific register or register type.
1. Navigate to Maint > Reset.
2. Move the cursor to point to Single Reset, then press Select.
3. Move the cursor to point to the parameter you want to reset, then press Reset. If
there are additional options for the parameter, press Select, move the cursor to
point to the option you want, then press Reset.
Single reset options
Parameter
Option
Description
Clears all accumulated energy values (kWh,
kVARh, kVAh).
Energy
Accumulated
Select which demand registers to clear
(power demand, current demand or input
metering demand).
Demand
Power, Current
Event Queue
History Log
Clears the alarm event queue register.
Clears the alarm history log.
Alarms
All Alarm Counts,
(various alarm
Select “Counters”, then select which counter
to clear (choose all or individual alarm
Counters
next table
table below).
Active Load Timer
Clears and restarts the load operation timer.
4. Enter the reset password if prompted (default is “0000”), then press OK.
5. Press Yes to confirm the reset or No to cancel and return to the previous screen.
Alarm counter options
Alarm counter
Option
Description
Over Current, Ph
Under Current, Ph
Over Current, N
Over Current, Gnd
Over Voltage, L-L
Under Voltage, L-L
Over Voltage, L-N
Under Voltage, L-N
Over Voltage Unbal
Over Voltage THD
Phase Loss
Select which alarm counter register to reset from
the current alarm condition counters.
Current
Select which alarm counter register to reset from
the voltage alarm condition counters.
Voltage
Over kW
Select which alarm counter register to reset from
the power alarm condition counters.
Power
Over kVAR
Over kVA
Lead PF, True
Lag PF, True
Select which alarm counter register to reset from
the power factor alarm condition counters.
Power Factor
Lead PF, Disp
Lag PF, Disp
Over kW Dmd, Pres
Over kW Dmd, Last
Over kW Dmd, Pred
Over kVAR Dmd, Pres
Over kVAR Dmd, Last
Over kVAR Dmd, Pred
Over kVA Dmd, Pres
Over kVA Dmd, Last
Over kVA Dmd, Pred
Select which alarm counter register to reset from
the demand alarm condition counters.
Demand
78
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Chapter 11—Meter resets
Alarm counter options (continued)
Alarm counter
Option
Description
Over Frequency
Select which alarm counter register to reset from
the frequency alarm condition counters.
Frequency
Under Frequency
Meter Powerup
Meter Reset
Select which alarm counter register to reset from
the unary alarm condition counters.
Unary
Meter Diagnostic
Phase Reversal
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PowerLogic™ PM5100 User Guide
Chapter 12—Maintenance and Upgrades
Chapter 12—Maintenance and Upgrades
Chapter 12
—
Maintenance and Troubleshooting
Alarms
Password Recovery
If you lose your password, contact technical support for password recovery assistance:
•
•
(00) + 1 (250) 544-3010
NOTE: Be sure to include your power meter’s serial number in your e-mail or have it
readily available when calling technical support.
Power Meter Memory
The power meter users its nonvolatile memory to retain all data and metering
configuration values. Under the operating temperature range specified for the power
meter, this nonvolatile memory has an expected life of at least 45 years.
NOTE: Life expectancy is a function of operating conditions and does not constitute any
expressed or implied warranty.
Identifying the Firmware Version, Model, and Serial Number
1. Scroll to Maint in the menu
list.
2. Press Maint.
3. Press Diag.
4. Press Info.
5. Press ▼ and ▲ to view
the model, firmware (OS)
version, serial number, and
other power meter
information.
6. Press ▲ to return to the
Maintenance screen.
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Chapter 12—Maintenance and Upgrades
Additional Meter Status Information
Meter
1. Scroll to Maint in the menu
list.
2. Press Maint.
3. Press Diag.
4. Press Meter.
5. View the power meter status.
6. Press ▲ to return to the
Maintenance screen.
Control Power
1. Scroll to Maint in the menu
list.
2. Press Maint.
3. Press Diag.
4. Press Cl Pwr.
5. View control Power
information.
6. Press ▲ to return to the
Maintenance screen.
Downloading Firmware
The power meter supports the downloading of new firmware and language files over the
communications link. This requires the free DLF3000 software, which is available at
www.schneider-electric.com. The DLF3000 offers an extensive Help file with information
on operating the software. The most recent firmware and language files are also available
on the website. Recommended baud rate for firmware download through communications
link is 19200.
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Chapter 12—Maintenance and Upgrades
Troubleshooting
causes. It also describes checks you can perform or possible solutions for each. After
referring to this table, if you cannot resolve the problem, contact your local Schneider
Electric sales representative for assistance.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe electrical
practices. For example, in the United States, see NFPA 70E.
• This equipment must be installed and serviced only by qualified personnel.
• Turn off all power supplying this equipment before working on or inside.
• Always use a properly rated voltage sensing device to confirm that all power is off.
• Carefully inspect the work area for tools and objects that may have been left inside
the equipment.
• Use caution while removing or installing panels so that they do not extend into the
energized bus; avoid handling the panels, which could cause personal injury.
Failure to follow these instructions will result in death or serious injury.
Heartbeat/Comms LED
The heartbeat/comms LED helps to troubleshoot the power meter. The heartbeat/comms
LED works as follows:
•
•
Normal operation — the LED flashes at a steady rate during normal operation.
Communications — the LED flash rate changes as the communications port
transmits and receives data. If the LED flash rate does not change when data is sent
from the host computer, the power meter is not receiving requests from the host
computer.
•
•
Hardware — if the heartbeat LED remains lit and does not flash ON and OFF, there is
a hardware problem. Perform a hard reset of the power meter (turn OFF power to the
power meter, then restore power to the power meter). If the heartbeat LED remains lit,
contact your local sales representative.
Control power and display — if the heartbeat LED flashes, but the display is blank,
the display may not be functioning properly or may have timed out (see “Setting Up
the Display” on page 8). If the display is blank and the LED is not lit, verify that control
power is connected to the power meter.
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Chapter 12—Maintenance and Upgrades
Table 12–1: Troubleshooting
Potential Problem
Possible Cause
Possible Solution
Go to [Maint] > [Diag]. Event messages
display to indicate the reason the icon is
illuminated. Note these event messages and
call the Technical Support or contact your
local sales representative for assistance.
When the maintenance (wrench) icon
is illuminated, it indicates an event
has occurred which may require
attention.
The maintenance (wrench)
icon is illuminated on the
power meter display.
Verify that the power meter line and terminals
are receiving the necessary power.
The power meter may not be
receiving the necessary power.
The display is blank after
applying control power to
the power meter.
Verify that the heartbeat LED is blinking.
The display may have timed out.
Press a button to see if the display timed out.
Check that the correct values have been
entered for power meter setup parameters
(CT and VT ratings, Nominal Frequency, and
so on). See “Configuring the basic setup
parameters” on page 32 for setup
instructions.
Incorrect setup values.
The data being displayed is
inaccurate or not what you
expect.
Check power meter voltage input terminals (1,
2, 3, 4) to verify that adequate voltage is
present.
Incorrect voltage inputs.
Check that all CTs and VTs are connected
correctly (proper polarity is observed) and that
they are energized. Check shorting terminals.
See the recommended torque in the Wiring
section of the installation manual.
Power meter is wired improperly.
Power meter address is incorrect.
Power meter baud rate is incorrect.
Check to see that the power meter is correctly
addressed. See “Communications setup” on
page 34 for instructions.
Verify that the baud rate of the power meter
matches the baud rate of all other devices on
its communications link. See
instructions.
Cannot communicate with
power meter from a remote
personal computer.
Verify the power meter communications
connections. Refer to the “Communications”
on page 25 section for instructions.
Communications lines are improperly
connected.
Check to see that a multi-point
communications terminator is properly
installed.
Communications lines are improperly
terminated.
Incorrect route statement to power
meter.
Check the route statement. Contact Global
Technical Support for assistance.
Energy/Alarm LED not
working.
May have been disabled by user.
The power meter does not contain any user-serviceable parts. If the power meter requires
service, contact your local sales representative. Do not open the power meter. Opening
the power meter voids the warranty.
Getting Technical Support
Please refer to the Technical Support Contacts provided in the power meter shipping
carton for a list of support phone numbers by country, or go to
www.schneider-electric.com, then navigate to Support area for contact information.
Register List
To download the latest version of the power meter PM5100 Modbus register list, go to
www.schneider-electric.com. Type PM5100 in the search field.
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Chapter 13—MID Compliance
This section applies only to PM5111(referred to in the section as the meter) and
contains descriptions and procedures that supplement the meter installation sheet. The
information contained here supports the meter’s declaration of compliance with the
Measuring Instruments Directive (2004/22/EC).
MID overview
Directive 2004/22/EC is the Measuring Instruments Directive (“MID”) from the
European Parliament & Council that harmonises many aspects of legal metrology
across the EU states.
Scope
Although MID applies to various measuring instruments, the scope of this section is
limited only to the MID standards that apply to AC electricity metering equipment:
•
EN 50470-1:2006
Electricity metering equipment (a.c.) — Part 1: General requirements, tests and test
conditions - Metering equipment (class indexes A, B and C)
•
EN 50470-3:2006
Electricity metering equipment (a.c.) — Part 3: Particular requirements - Static
meters for active energy (class indexes A, B and C)
Related topics
•
Search the Internet for “Measuring Instruments Directive” or “Directive 2004/22/EC”
for more information.
•
The CE declaration document is available from the website. Search for
ECDPM5000.
MID compliance for the meter
The meter complies to these MID standards and class indexes:
•
•
EN 50470-1:2006 Class C
EN 50470-3:2006 Class C
The meter achieves MID compliance through application of Annex B (Type
Examination) and Annex D (Declaration of Conformity to Type Based on Quality
Assurance of the Production Process).
Specifications relevant to MID
that section for mechanical and electrical specifications such as IP rating, rated
operating conditions, protective class and environmental conditions.
In addition, the following specifications, function limitations and specific conditions are
relevant to MID:
•
•
EN 50470-1:2006 Class C
EN 50470-3:2006 Class C
Applicable MID standards and class index
Type of measuring equipment
Static watt-hour meter
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Chapter 13—MID Compliance
PowerLogic™ PM5100 series
Indoor use only, permanently mounted in residential,
commercial or light industrial applications, where levels of
vibration and shock are of low significance
Intended use
Mechanical environment
M1
Electromagnetic (EMC) environment
Active Accuracy Class (kWh)
E2
C(kWh)
•
•
3-phase 4-wire Wye grounded
3-phase 3-wire Wye ungrounded
System types (for MID-compliant applications)
3-phase 4-wire Wye
grounded
3 x 63.5(110) to 3 x 277(480) V AC
3 x 110 to 3 x 480 V L-L
Voltage at voltage
terminals
3-phase 3-wire Wye
ungrounded
Current Rating (Imin – Iref (Imax))
Electrical network frequency
Location
0.05-5(6) A
50 Hz
Meter front panel
50 Hz maximum
10,000 pulses per kWh
590 to 635 nm
-25°C to +70°C
IP51
Frequency
Optical pulse output
1
(energy pulsing LED)
Pulse constant
Wavelength
Temperature Range
IP Rating
Insulation Protective Class
Impulse Voltage Rating
AC Voltage Rating
Class II
6kV
4kV
Main Cover Sealing Type
Intended Location of the Meter
Wire and Crimp
Indoor
1
Safety precautions
Installation, wiring, testing and service must be performed in accordance with all local
and national electrical codes.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
• Apply appropriate personal protective equipment (PPE) and follow safe electrical
work practices. See NFPA 70E in the USA or applicable local standards.
• Turn off all power supplying this device before working on it.
• Always use a properly rated voltage sensing device to confirm that all power is off.
• Do not exceed the device’s ratings for maximum limits.
• Do not use this device for critical control or protection applications where human or
equipment safety relies on the operation of the control circuit.
• Never short the secondary of a voltage transformer (VT).
• Never open circuit a current transformer (CT).
• Always use grounded external CTs for current inputs.
Failure to follow these instructions will result in death or serious injury.
1. Turn off all power supplying this device before working on it.
2. Always use a properly rated voltage sensing device to confirm that all power is off.
Installation and wiring
Refer to the installation sheet that shipped with your meter for meter installation and
wiring instructions.
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Chapter 13—MID Compliance
Related topics
•
information.
Installing the terminal covers
The voltage and current terminal covers help prevent tampering with the meter’s
voltage and current measurement inputs. The terminal covers enclose the terminals,
the conductor fixing screws and a suitable length of the external conductors and their
insulation. The terminal covers are secured by tamper-resistant meter seals.
The meter terminal covers must be installed by a qualified installer. The installation of
both the voltage and current terminal covers is required to provide tamper evidence for
MID installations.
Location of terminal covers
A
B
C
D
A
B
C
D
Voltage terminal cover
Voltage terminal sealing point
Current terminal cover
Current terminal sealing point
1. Install the voltage terminal cover (A) and apply the seal at the sealing point (B).
2. Install the current terminal cover (C) and apply the seal at the sealing point (D).
PM5111 default screen
The meter’s default home screen displays the following information.
Default PM5111 display screen
A
B
C
D
Accumulated real energy (delivered + received)
System frequency
C
B
Power system setting
D
Locked / unlocked icon
A
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Chapter 13—MID Compliance
PowerLogic™ PM5100 series
Related topics
•
front panel menu navigation, LED indicators and display screen notification icons.
Meter firmware version
You can access information about the meter’s OS and RS firmware versions by
navigating to Maint > Diag > Info.
MID-protected setup parameters
This section describes the setup parameters that are permanently set at the factory and
cannot be modified, regardless of the lock or unlock settings.
Front panel LEDs
Alarm / energy pulsing LED (orange)
A
Heartbeat / communications LED (green)
B
The alarm / energy pulsing LED on the meter is permanently set for energy pulsing and
cannot be disabled or used for alarms. All other setup parameters for the energy
pulsing LED are also permanently set and cannot be modified.
Lock-protected setup parameters
This section lists the meter’s lock-protected setup parameters for MID compliance. After
the meter is locked, these setup parameters are protected and cannot be edited.
The setup parameters can be accessed from the maintenance menu screen. Use the
front panel buttons to navigate to the Maint > Setup menu.
Lock-protected setup parameters
Setup menu
Setup sub-menu
Lock-protected setup parameter
•
•
•
•
•
•
•
•
Power System
VT Connect
VT Primary (V) and VT Secondary (V)
CT on Terminal
CT Primary (A)
CT Secondary (A)
Sys Frequency
Phase Rotation
1
Basic
Meter
Advanced
•
•
•
Label
HMI
User Passwords
Energy Resets
Date
Clock
1
If using VTs (i.e., if VT Connect is set to 3VT or 2VT)
Lock-protected functions
This section lists the meter’s lock-protected functions for MID compliance. After the
meter is locked, these functions are disabled.
These functions can be accessed from the maintenance menu screen. Use the front
panel buttons to navigate to the Maint > Reset menu.
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Chapter 13—MID Compliance
Lock-protected functions
Menu
Sub-menu
Lock-protected function
•
•
Meter Initialization (all)
Energies
Global Resets
Single Resets
Resets
•
Energy
Setting up the PM5111
You must configure all the lock-protected setup parameters before locking the meter.
When the meter is locked, those setup parameters cannot be edited.
Basic setup menu
See “Configuring the basic setup parameters” on page 32 to perform basic setup.
For MID compliance, the Power System must be set to one of the following settings:
•
•
3PH4W Wye Gnd (three-phase 4-wire wye grounded)
3PH3W Wye Ungnd (three-phase 3-wire wye ungrounded)
Advanced setup menu
Clock setup menu
See “Advanced setup” on page 38 to perform advanced setup.
You must use ION Setup to edit the device label.
See “Setting the clock” on page 37 to change the meter time using the display.
You can also use ION Setup to set or sync the meter time.
Passwords setup menu
See “Setting up the screen passwords” on page 36 to change the meter screen
passwords.
Initializing the meter
Initializing the meter clears the meter’s logged data, counters and timers. It is common
practice to initialize the meter after its configuration is complete, before adding it to an
energy management system.
1. After configuring all the meter setup parameters, navigate through the different
meter display screens and make sure the displayed data is valid.
logged data, counters and timers.
3. Select Meter Initialization to clear all recorded data.
Locking or unlocking the meter
After you initialize the meter, you must lock it in order to conform to MID standards.
1. Navigate to Maint > Setup > Meter >Lock.
2. Press Edit to activate or deactivate the lock.
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Chapter 13—MID Compliance
PowerLogic™ PM5100 series
3. Enter your lock password.
4. Press + and - to scroll between Active and Inactive.
5. Press OK to select the option.
6. Select Yes to confirm the selected option, and exit the screen.
On activating the lock, a lock icon appears on the upper left corner of the screen.
7. Make sure you record and store the lock password in a secure location. A lost lock
password cannot be recovered.
Setting up lock password
To set up a new lock password, perform the below procedure. To change the
password, make sure the lock is inactive and perform the below procedure.
NOTE: You cannot change the lock password when the lock is active.
NOTICE
IRRECOVERABLE PASSWORD
Record your meter's lock password information in a secure location.
Failure to follow this instruction can result in a permanently locked meter.
1. Navigate to Maint > Setup > HMI > Pass.
2. Press
to scroll to Revenue Lock in the Passwords screen.
ꢀ
3. Press Edit to select a password.
4. Press + to increment the active digit through the numerals 0-9.
5. Press
to move to the next digit to the left.
6. Continue until all values are selected, and then press OK to set the password.
7. Press Yes to save the changes.
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Glossary
Glossary
Terms
accumulated energy—energy accumulates as either delivered to the customer or
received from the customer.
active alarm—an alarm that has been set up to trigger the execution of a task or
notification when certain conditions are met. An icon in the upper-right corner of the
power meter indicates that an alarm is active (!).
ASCII—American Standard Code for Information Interchange
baud rate—specifies how fast data is transmitted across a network port.
block interval demand—demand calculation method for a block of time; includes sliding
block, fixed block, or rolling block method.
communications link—a chain of devices connected by a communications cable to a
communications port.
current transformer (CT)—current transformer for current inputs.
debounce time—amount of time an input must be consistently on before the transition is
accepted as valid.
demand—average value of a quantity, such as power, over a specified interval of time.
device address—used to identify a device on the Modbus communications link; defines
where the power meter resides in the power monitoring system.
energy delivered—the utility delivers energy to the facility; energy in.
energy received—the utility receives energy from the facility; the customer provides
power to the utility; energy out.
event—the occurrence of an alarm condition, such as Undervoltage Phase A, configured
in the power meter.
firmware—operating system within the power meter.
fixed block—a demand calculation method using an interval selected from 1 to 60
minutes (in 1-minute increments). The power meter calculates and updates the demand
at the end of each interval.
frequency—number of cycles in one second.
GMT—Greenwich Mean Time
k_h— kWh, kVARh or kVAh depending on the energy parameter selected.
lagging current (I)—current is lagging voltage up to 180°.
leading current (I)—current is leading voltage up to 180°.
lagging power factor (PF) —active and reactive power flowing in the same directions.
leading power factor (PF) —active and reactive power flowing in opposite directions.
line-to-line voltages—measurement of the rms line-to-line voltages of the circuit.
line-to-neutral voltages—measurement of the rms line-to-neutral voltages of the circuit.
maximum value—highest value recorded of the instantaneous quantity such as Phase
A Current, Phase A Voltage, etc., since the last reset of the minimums and maximums.
minimum value—lowest value recorded of the instantaneous quantity such as Phase A
Current, Phase A Voltage, etc., since the last reset of the minimums and maximums.
nominal—typical or average.
parity—refers to binary numbers sent over the communications link. An extra bit is
added so that the number of ones in the binary number is either even or odd, depending
on your configuration. Used to detect errors in the transmission of data.
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Glossary
partial interval demand—equal to energy accumulated thus far in the interval divided
by the length of the complete interval.
peak demand current—highest demand current measured in amperes since the last
reset of demand.
peak demand real power—highest demand real power measured since the last reset of
demand.
peak demand—highest demand measured since the last reset of demand.
phase currents (rms)—measurement in amperes of the rms current for each of the
three phases of the circuit.
phase rotation—refers to the order in which the instantaneous values of the voltages or
currents of the system reach their maximum positive values. Two phase rotations are
possible: A-B-C or A-C-B.
potential transformer (PT)—also known as a voltage transformer (VT).
power factor (PF)—power factor is the degree to which voltage and current to a load are
out of phase. Total power factor is the difference between the total power your utility
delivers and the portion of total power that does useful work. True power factor is the
ratio of real power to apparent power using the complete harmonic content of real and
apparent power. Calculated by dividing watts by volt amperes. Displacement power
factor is the cosine of the angle between the fundamental components of current and
voltage, which represents the time lag between fundamental voltage and current.
real power—calculation of the real power (3-phase total and per-phase real power
calculated) to obtain kilowatts.
rms—root mean square. Power meters are true rms sensing devices.
rolling block—a selected interval and subinterval that the power meter uses for demand
calculation. The subinterval must divide evenly into the interval. Demand is updated at
each subinterval, and the power meter displays the demand value for the last completed
interval.
sliding block—an interval selected from 1 to 60 minutes (in 1-minute increments). If the
interval is between 1 and 15 minutes, the demand calculation updates every 15 seconds.
If the interval is between 16 and 60 minutes, the demand calculation updates every 60
seconds. The power meter displays the demand value for the last completed interval.
thermal demand—demand calculation based on thermal response.
Total Demand Distortion (TDD)—indicates the harmonic currents between an end user
and a power source.
Total Harmonic Distortion (THD or thd)—indicates the degree to which the voltage or
current signal is distorted in a circuit.
total power factor—see power factor.
true power factor—see power factor.
unary alarm—an alarm based on singular events or specific conditions for which
setpoints are not appropriate.
voltage transformer (VT)—also known as a potential transformer (PT).
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Glossary
Abbreviations
A—Ampere
Amps—Amperes
Comms—Communications
CPT—Control Power Transformer
CT—Current Transformer
D Out—Digital Output
DMD—Demand
DO—Drop Out
F—Frequency
GMT—Greenwich Mean Time
Hz—Hertz
I—Current
I/O—Input/Output
Imax—Current maximum demand
k_h— kWh, kVARh or kVAh depending on the energy parameter selected
kVA—Kilovolt-Ampere
kVAD—Kilovolt-Ampere demand
kVAR—Kilovolt-Ampere reactive
kVARD—Kilovolt-Ampere reactive demand
kVARH—Kilovolt-Ampere reactive hour
kW—Kilowatt
kWD—Kilowatt demand
kWH—Kilowatthours
kWH/P—Kilowatthours per pulse
kWmax—Kilowatt maximum demand
Mag—Magnitude
Maint—Maintenance
Min—Minimum
MnMx—Minimum and maximum values
MSec—Milliseconds
MVAh—Megavolt ampere hour
MVARh—Megavolt ampere reactive hour
MWh—Megawatt hour
OS—Operating System (firmware version)
P—Real power
Pd—Real power demand
PF—Power factor
PM—Power meter
PQS—Real, reactive, apparent power
PQSd—Real, reactive, apparent power demand
Prim—Primary
PT—Potential Transformer (also known as VT–Voltage Transformer)
PU—Pick Up
Pulse—Pulse output mode
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Glossary
Pwr—Power
Q—Reactive power
Qd—Reactive power demand
RS—Firmware reset system version
S—Apparent power
SN—Power meter serial number
Sd—Apparent power demand
Sec—Secondary
Sub-I—Subinterval
TDD—Total Demand Distortion
THD—Total Harmonic Distortion
U—Voltage line to line
V—Volts
VT—Voltage Transformer (also known as PT–Potential Transformer)
VAR—Volt ampere reactive
Vmax—Maximum voltage
Vmin—Minimum voltage
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PowerLogic and Schneider Electric are trademarks or registered trademarks of Schneider
Electric in France, the USA and other countries.
• This product must be installed, connected and used in compliance with prevailing standards and/or
installation regulations.
• If this product is used in a manner not specified by the manufacturer, the protection provided by the product
may be impaired.
• The safety of any system incorporating this product is the responsibility of the assembler/installer of the
system.
Schneider Electric
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CS 30323
F - 92506 Rueil Malmaison Cedex
As standards, specifications and designs change from time to time, always ask for confirmation of the
information given in this
publication.
Contact your local Schneider Electric sales
representative for assistance or go to
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