Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip
Units
Unidades de disparo electrónico Micrologic™ 2.0A, 3.0A,
5.0A y 6.0A
MC
Déclencheurs électroniques Micrologic 2.0A, 3.0A, 5.0A et
6.0A
Instruction Bulletin
Boletín de instrucciones
Directives d'utilisation
48049-136-05ꢀ
Rev. 01, 04/2012
Retain for Future Use. / ꢀ
Conservar para uso futuro. / ꢀ
À conserver pour usage ultérieur.
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A
Electronic Trip Units
Instruction Bulletin
48049-136-05ꢀ
Rev. 01, 07/2012
Retain for future use.
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
48049-136-05
Rev. 01, 07/2012
Hazard Categories and Special
Symbols
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 bulletin 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.
ANSI
DANGER
DANGER indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
IEC
WARNING
WARNING indicates a hazardous situation which, if not avoided, can
result in death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, can
result in minor or moderate injury.
NOTICE
NOTICE is used to address practices not related to physical injury. The
safety alert symbol is not used with this signal word.
NOTE: Provides additional information to clarify or simplify a procedure.
Please Note
FCC Notice
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.
This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This
equipment generates, uses, and can radiate radio frequency energy and, if
not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment
in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense. This
Class A digital apparatus complies with Canadian ICES-003.
2-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic® 2.0A, 3.0A, 5.0A and 6.0A Electronic Trip Units
Table of Contents
Table of Contents
SECTION 1:
GENERAL INFORMATION
...................................................................................................................... 5
Introduction ................................................................................................. 5
Communications ......................................................................................... 5
Trip Unit Settings ........................................................................................ 5
Micrologic 2.0A Trip Unit ....................................................................... 6
Micrologic 3.0A Trip Unit ....................................................................... 6
Micrologic 5.0A Trip Unit ....................................................................... 7
Micrologic 6.0A Trip Unit ....................................................................... 8
Zone-Selective Interlocking ......................................................................... 9
Trip Unit Switches ..................................................................................... 10
Long-Time Protection .......................................................................... 10
Short-Time Protection ......................................................................... 11
Instantaneous Protection ..................................................................... 12
Ground-Fault Protection ...................................................................... 13
Indicator Lights .......................................................................................... 13
Overload Indicator Light ...................................................................... 13
Trip Indicator Lights ............................................................................. 14
Ammeter ................................................................................................... 14
Trip Unit Testing ........................................................................................ 14
Micrologic Trip Unit Configuration ............................................................. 14
Control Power ...................................................................................... 14
External Power Supply ........................................................................ 15
SECTION 2:
SECTION 3:
AMMETER
.................................................................................................................... 16
Display ...................................................................................................... 16
Ammeter Measurements ........................................................................... 16
Accessing Information ............................................................................... 16
Current Menu ...................................................................................... 17
Peak Menu .......................................................................................... 18
Switch Settings Menu .......................................................................... 19
OPERATION
.................................................................................................................... 20
Switch Setting Adjustment ........................................................................ 20
Examples .................................................................................................. 20
Micrologic 2.0A Trip Unit ..................................................................... 20
Micrologic 3.0A Trip Unit ..................................................................... 21
Micrologic 5.0A Trip Unit ..................................................................... 21
Micrologic 6.0A Trip Unit ..................................................................... 22
Zone-Selective Interlocking (ZSI) .............................................................. 23
Communication Module values ................................................................. 24
Trip Unit Settings Check ........................................................................... 26
Trip Unit Operation Verification ................................................................. 26
Equipment Ground-Fault Trip Functions Testing ...................................... 27
Trip Unit Resetting .................................................................................... 27
Trip Unit Status Check .............................................................................. 27
SECTION 4:
TRIP UNIT REPLACEMENT
.................................................................................................................... 28
Required Tools .......................................................................................... 28
Preparation ............................................................................................... 28
Record Switch Settings ....................................................................... 28
Circuit Breaker Disconnection ............................................................. 28
Circuit Breaker Accessory Cover Removal ......................................... 28
Rating Plug Removal ........................................................................... 29
Trip Unit Removal ................................................................................ 29
© 1999–2012 Schneider Electric All Rights Reserved
3-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Table of Contents
48049-136-05
Rev. 01, 07/2012
Trip Unit Replacement ..............................................................................29
Battery Installation ...............................................................................29
Trip Unit Installation .............................................................................30
Circuit Breaker Accessory Cover Replacement ........................................31
Trip Unit Installation Check .......................................................................32
Secondary Injection Testing ................................................................32
Primary Injection Testing .....................................................................32
Check Accessory Operation ................................................................32
Trip Unit Setup ..........................................................................................32
Circuit Breaker Reconnection ...................................................................32
SECTION 5:
SECTION 6:
ADJUSTABLE RATING PLUG REPLACEMENT ..............................................................................................33
Rating Plug Removal ................................................................................33
New Rating Plug Installation .....................................................................33
BATTERY REPLACEMENT
....................................................................................................................34
Circuit Breaker Disconnection ...................................................................34
Circuit Breaker Accessory Cover Removal ...............................................34
Withstand Module Shifting ........................................................................34
Battery Replacement .................................................................................34
Withstand Module Replacement ...............................................................35
Circuit Breaker Accessory Cover Replacement ........................................35
Circuit Breaker Reconnection ...................................................................35
APPENDIX A: REGISTER LIST
....................................................................................................................36
List of Registers ........................................................................................36
4-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
Section 1—General Information
Figure 1:
Micrologic Trip Unit
Introduction
A—Micrologic Trip Unit
B—Product Name
C—Switch Cover
D—Switch Cover Opening Slot
E—Adjustable Rating Plug
Micrologic™ trip units (A) provide adjustable
tripping functions on electronic trip circuit
breakers. The product name (B) specifies the
level of protection provided by the trip unit.
A
A
7.0
ic
g
o
l
ro
ic
M
B
Micrologic 3.0A
%
%
0
0
0
1
Type of protection
2—Basic IEC protection (LS0)
3—Basic UL protection (LI)
5—Selective protection (LSI)
6—Selective protection plus ground fault
protection for equipment (LSIG)
E
4
m
lar
a
u
n
e
m
e
m
ti
8
r
12
ng
t
lo
)
4
6
1
(
s
.8
Ir
.9
.9
.9
2
1
20
24
.7
5
8
.6
.5
.4 In
.5
Ir
6
@
1
x
D
Trip unit series
0—Indicates the first version
C
Type of measurement
None—Provides protection only
A—Provides protection plus ammeter measurements
Micrologic trip units are field replaceable to allow
for upgrading of the trip unit in the field. For
complete information on available circuit breaker
models, frame sizes, interrupting ratings, sensor
plugs, rating plugs and trip units, see the product
catalog.
Communications
Micrologic trip units can communicate with other devices if the optional
Circuit Breaker Communication Module (BCM) is installed. For information
on the communication module, see the product catalog and Modbus™
Communications System, Data Bulletin 0613IB1201.
Trip Unit Settings
On the face of the trip unit are adjustable switches to allow changing of trip
characteristics. Trip units are shipped with the long-time pickup switch set at
1.0 and all other trip unit adjustments set at their lowest settings.
© 1999–2012 Schneider Electric All Rights Reserved
5-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
48049-136-05
Rev. 01, 07/2012
NOTE: For use with IEC circuit breakers only.
Micrologic 2.0A Trip Unit
Figure 2:
2.0A Trip Unit
The Micrologic 2.0A trip unit provides basic IEC
(LS0) protection and a built-in ammeter.
M
N
L
A
A. Trip unit name
Micrologic 2.0 A
K
B. Alphanumeric display
C. Three-phase bar graph
D. Scroll button
B
C
E. Menu button
F. Long-time pickup (Ir) switch
G. Long-time delay (tr) switch
H. Short-time pickup (Isd) switch*
I. Test plug receptacle
J. Overload indicator light
K. Reset button for battery status check and trip
indicator LED
L. Self-protection indicator light
t
F
G
D
E
H
menu
J
I
0
Ir
Isd
I
long time
alarm
Ir
tr
(s)
.8
8
.7
.9
.95
.98
4
12
16
20
24
.6
.5
.4
2
1
F
M. Short-time or instantaneous trip indicator
light
N. Long-time trip indicator light
1
.5
x In
instantaneous
Isd
@ 6 Ir
4
G
H
3
5
2.5
6
8
10
2
1.5
x Ir
setting
Figure 3:
3.0A Trip Unit
Micrologic 3.0A Trip Unit
N M
L
A
The Micrologic 3.0A trip unit provides basic UL
(LI) protection and a built-in ammeter.
Micrologic 3.0 A
K
A. Trip unit name
B. Alphanumeric display
C. Three-phase bar graph
D. Scroll button
B
C
E. Menu button
t
F
F. Long-time pickup (Ir) switch
G. Long-time delay (tr) switch
H. Instantaneous pickup (Ii) switch
I. Test plug receptacle
J. Overload indicator light
G
D
E
H
menu
J
K. Reset button for battery status check and trip
indicator LED
0
Ir
Ii
I
long time
alarm
Ir
tr
(s)
.8
8
.7
.9
.95
.98
4
12
16
20
24
.6
.5
.4
2
1
F
L. Self-protection indicator light
1
.5
x In
@ 6 Ir
instantaneous
M. Short-time or instantaneous trip indicator
light
N. Long-time trip indicator light
Ii
G
5
4
6
3
2
8
10
1.5
x In
setting
12
H
I
*Short-time delay is factory set at 0 (no delay), thus short-time
pickup provides instantaneous protection.
6-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
Figure 4:
5.0A Trip Unit
P O
Micrologic 5.0A Trip Unit
N
A
The Micrologic 5.0A trip unit provides selective
(LSI) protection and a built-in ammeter.
Micrologic 5.0 A
M
A. Trip unit name
B. Alphanumeric display
C. Three-phase bar graph
D. Scroll button
B
C
E. Menu button
t
F. Long-time pickup (Ir) switch
G. Long-time delay (tr) switch
H. Short-time pickup (Isd) switch
I. Short-time delay (tsd) switch
J. Instantaneous pickup (Ii) switch
K. Test plug receptacle
L. Overload indicator light
F
G
H
D
E
I
menu
J
L
long time
alarm
Ir
tr
(s)
0
Ir
Isd Ii
I
.8
8
.7
.9
.95
.98
4
12
16
20
24
.6
.5
2
1
F
G
H
.4
1
.5
M. Reset button for battery status check and trip
indicator LED
N. Self-protection indicator light
x In
@
6 Ir
short timee
instantaneous
Isd
tsd
I i
.4 .4
4
8
(s)
.3
.2
.3.2
3
5
6
10
12
15
off
x In
2.5
6
8
4
3
.1
2
.1
0
off
1.5
10
2
2
x Ir
setting
on
I
t
delay
O. Short-time or instantaneous trip indicator
light
P. Long-time trip indicator light
I
K
J
© 1999–2012 Schneider Electric All Rights Reserved
7-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
48049-136-05
Rev. 01, 07/2012
Figure 5:
6.0A Trip Unit
Micrologic 6.0A Trip Unit
R Q
T S
The Micrologic 6.0A trip unit provides selective
and ground-fault protection for equipment
(ꢁꢀ1200 A) (LSIG) and a built-in ammeter.
A
Micrologic 6.0 A
t
F
P
A. Trip unit name
G
B. Alphanumeric display
H
I
B
C
C. Three-phase bar graph
D. Scroll button
E. Menu button
J
0
Ir
Isd Ii
I
100%
F. Long-time pickup (Ir) switch
G. Long-time delay (tr) switch
H. Short-time pickup (Isd) switch
I. Short-time delay (tsd) switch
J. Instantaneous pickup (Ii) switch
K. Ground-fault pickup (Ig) switch
L. Ground-fault delay (tg) switch
M. Test plug receptacle
N. Ground fault push-to-trip button
O. Overload indicator light
P. Reset button for battery status check and trip
indicator LED
%
40
t
D
E
menu
O
I2t on
I2t off
long time
alarm
K
Ir
tr
(s)
.8
8
.7
.9
.95
.98
4
12
16
20
.6
.5
2
1
F
24
.4
1
.5
L
x In
@
6 Ir
G
short time
instantaneous
Isd
tsd
I i
(s)
.4 .3
6
4
5
.4
3
5
10
12
15
off
.3
.2
.1
6
8
4
3
2.5
H
J
.2
.1
2
0
2
1.5
10
2
0
Ig
I
x Ir
on
I
t
off
x In
setting
delay
I
test
N
Ig
tg
(s)
.3
.2
.4 .4
E
.3.2
D
F
G
H
C
K
.1
B
A
M
.1
0
J
2
on
I
t
off
ground fault
L
Q. Self-protection indicator light
R. Ground-fault trip indicator light
S. Short-time or instantaneous trip indicator
light
T. Long-time trip indicator light
8-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
Zone-Selective Interlocking
2
2
Short-time and ground-fault protection can be
interlocked to provide zone-selective
interlocking.
NOTE: Use I t off with ZSI for proper coordination. Using I t on with ZSI is
not recommended as the delay in the upstream device receiving a restraint
signal could result in the trip unit tripping in a time shorter than the published
trip curve.
Control wiring links several trip units in the
distribution network and in the event of a fault, a
trip unit will obey the set delay time only if
receiving a signal from a downstream trip unit.
NOTE: Setting short-time delay (tsd) or ground-fault delay (tg) to the 0
setting will eliminate selectivity for that circuit breaker.
If the trip unit does not receive a signal, tripping
will be instantaneous (with no intentional delay).
•
The fault is cleared instantaneously by the
nearest upstream circuit breaker.
2
•
Thermal stresses (I t) in the network are
minimized without any effect on the correct
time delay coordination of the installation.
Figure 6 shows circuit breakers 1 and 2 zone-
selective interlocked.
Figure 6:
Zone-Selective Interlocking
•
A fault at A is seen by circuit breakers 1 and
2. Circuit breaker 2 trips instantaneously and
also informs circuit breaker 1 to obey set
delay times. Thus, circuit breaker 2 trips and
clears the fault. Circuit breaker 1 does not
trip.
•
A fault at B is seen by circuit breaker 1.
Circuit breaker 1 trips instantaneously since
it did not receive a signal from the
downstream circuit breaker 2. Circuit breaker
1 trips and clears the fault. Circuit breaker 2
does not trip.
1
B
A
2
© 1999–2012 Schneider Electric All Rights Reserved
9-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
48049-136-05
Rev. 01, 07/2012
Trip Unit Switches
NOTE: Micrologic trip units are powered from the circuit to always provide
fault protection. All other functions (display, metering, communications, etc.)
require external power. See 15 for more information.
Long-Time Protection
Long-time protection protects equipment against
overloads.
Figure 7:
Long-Time Protection Switches
•
Long-time protection is standard on all trip
units.
Micrologic 2.0A Trip Unit
Micrologic 3.0A Trip Unit
A
B
C
A
B
C
•
The long-time pickup (Ir) (A) sets the
maximum current level (based on sensor
plug rating In) which the circuit breaker can
continuously carry. If current exceeds this
value, circuit breaker will trip after the preset
time delay. The long-time pickup (Ir) is
adjustable from 0.4–1.0 times the sensor
plug rating (In).
long time
long time
alarm
Ir
tr
(s)
alarm
Ir
tr
(s)
8
.8
8
.8
.7
.9
.95
.98
4
12
16
20
24
.7
.9
.95
.98
4
12
16
20
24
.6
.5
.4
2
1
.6
.5
.4
2
1
1
.5
1
.5
x In
@ 6 Ir
x In
@ 6 Ir
instantaneous
instantaneous
Isd
Ii
4
5
3
5
4
6
2.5
2
6
8
3
2
8
10
1.5
10
1.5
12
x Ir
x In
setting
setting
•
•
The long-time delay (tr) (B) sets the length of
the time that the circuit breaker will carry an
overcurrent (below the short-time or
instantaneous pickup current level) before
tripping. See Table 1 for delay settings.
Both long-time pickup and long-time delay
are on the field-replaceable adjustable rating
plug. To change settings to more precisely
match the application, various rating plugs
are available. For instructions on replacing
the rating plug, see Section 5 —Adjustable
Rating Plug Replacement.
Micrologic 5.0A Trip Unit
Micrologic 6.0A Trip Unit
A
B
C
A
B
C
long time
long time
alarm
Ir
tr
alarm
Ir
tr
8
.8
8
.8
(s)
.7
.9
.95
.98
4
12
16
20
24
(s)
.7
.9
.95
.98
4
12
16
20
24
.6
.5
.4
2
1
.6
.5
2
1
1
.5
@ 6 Ir
.4
1
.5
@ 6 Ir
x In
x In
short time
instantaneous
short time
instantaneous
tsd
I i
Isd
tsd
(s)
I i
Isd
4
8
.4
.4 .4
(s)
.3
0
4
8
.
4
.3
5
6
2
10
12
15
off
x In
3
3
5
5
10
12
15
off
4
3
6
8
.
3
.
2
1
2.5
2
.3
.2
.2
.1
2.5
2
6
8
4
3
.
2
.
.
1
0
off
.1
2
2
1.5
10
1.5
10
2
on
I
t
off
x Ir
on
I
t
x In
x Ir
setting
delay
setting
delay
test
Ig
tg
(s)
.
4
E
.
4
.3
D
F
•
For Masterpact™ NT and NW circuit
.
.
3
.
2
1
C
B
G
H
2
.
breakers, the In value can be changed by
replacing the sensor plug below the trip unit.
For further information, see the instructions
packed with the sensor plug replacement kit.
.1
0
off
A
J
2
on
I
t
ground fault
•
•
The overload indicator light (C) indicates that
the Ir long-time pickup threshold has been
exceeded.
Long-time protection uses true RMS
measurement.
Table 1:
Setting1
Micrologic Trip Unit Long-Time Delay Values
Long-Time Delay in Seconds2
tr at 1.5 x Ir
tr at 6 x Ir
12.5
0.5
25
1
50
2
100
4
200
8
300
12
400
16
500
20
600
24
Thermal imaging provides continuous
temperature rise status of the wiring, both before
and after the device trips. This allows the circuit
breaker to respond to a series of overload
conditions which could cause conductor
overheating, but would go undetected if the
long-time circuit was cleared every time the load
dropped below the pickup setting or after every
tripping event.
3
tr at 7.2 x Ir
0.34
0.69
1.38
2.7
5.5
8.3
11
13.8
16.6
1
Ir = In x long-time pickup. In = sensor rating. Trip threshold between 1.05 and 1.20 Ir.
Time-delay accuracy +0/-20%
For Micrologic 5.0A and 6.0A trip units, when tsd is set to 0.4 on or 4.0 off, then tr = 0.5 instead of 0.34.
2
3
NOTE: If checking trip times, wait a minimum of 15 minutes after circuit
breaker trips before resetting to allow the thermal imaging to reset
completely to zero or use a full-function test kit to defeat the thermal
imaging.
10-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
Figure 8:
Short-Time Protection Switches
Short-Time Protection
Micrologic 5.0A Trip Unit
Micrologic 6.0A Trip Unit
Short-time protection protects equipment
against short circuits.
long time
long time
alarm
Ir
tr
(s)
alarm
Ir
tr
(s)
8
.8
8
.8
.7
.9
.95
.98
4
12
16
20
24
.7
.9
.95
.98
4
12
16
20
24
.6
.5
2
1
.6
.5
2
1
•
Short-time protection is standard on 2.0A,
5.0A and 6.0A trip units. It is not available on
3.0A trip units.
.4
1
.5
.4
1
.5
x In
@ 6 Ir
x In
@ 6 Ir
short time
instantaneous
short time
instantaneous
tsd
I i
Isd
tsd
I i
Isd
4
8
.4
.4 .4
(s)
.3
0
4
8
(s)
.
4
.3
5
6
2
10
12
15
off
x In
3
3
5
5
10
12
15
off
4
3
6
8
.
3
.
2
1
2.5
2
.3
.2
.2
.1
2.5
2
6
8
4
3
.
2
.
.
1
0
off
.1
2
2
1.5
10
1.5
10
2
•
•
Short-time protection is based on the long-
time pickup (Ir).
The short-time pickup (Isd) (A) sets current
level (below instantaneous trip level) at
which circuit breaker will trip after the preset
time delay.
on
I
t
off
x Ir
on
I
t
x In
x Ir
setting
delay
A
B
A
B
setting
delay
test
Ig
tg
(s)
.
4
E
.
4
.3
D
F
.
.
3
.
2
1
C
B
G
H
2
.
.1
0
off
A
J
2
on
I
t
ground fault
•
•
The short-time delay (tsd) (B) sets the length
of time that the circuit breaker will carry an
overcurrent above the short-time pickup
current level before tripping. It is adjustable
on the 5.0A and 6.0A trip unit and factory set
to zero on the 2.0A trip unit.
The I t on/I t off option provides improved
selectivity with downstream protective
devices:
Table 2:
Micrologic Trip Unit Short-Time Delay Values
Short-Time Delay
Setting
2
I t off (Isd at 10 Ir) (seconds)
0
0.1
0.1
80
0.2
0.2
140
200
0.3
0.4
0.4
350
500
2
2
2
I t on (Isd at 10 Ir) (seconds)
0.3
tsd (min. trip) (milliseconds)
tsd (max. trip) (milliseconds)
20
80
230
320
140
2
— With I t off selected, fixed time delay is
provided.
2
2
— With I t on selected, inverse time I t
protection is provided up to 10 x Ir.
Above 10 x Ir, fixed time delay is
provided.
•
•
Intermittent currents in the short-time tripping
range which do not last sufficiently long to
trigger a trip are accumulated and shorten
the trip delay appropriately.
Short-time protection can be zone-selective
interlocked (ZSI) with upstream or
downstream circuit breakers.
2
2
NOTE: Use I t off with ZSI for proper coordination. Using I t on with ZSI is
not recommended as the delay in the upstream device receiving a restraint
signal could result in the trip unit tripping in a time shorter than the
published trip curve.
•
•
•
Setting tsd to the 0 setting turns off zone-
selective interlocking.
Short-time protection uses true RMS
measurement.
Short-time pickup and delay can be adjusted
to provide selectivity with upstream or
downstream circuit breakers.
© 1999–2012 Schneider Electric All Rights Reserved
11-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
48049-136-05
Rev. 01, 07/2012
Figure 9:
Instantaneous Protection Switches
Instantaneous Protection
Micrologic 2.0A Trip Unit
Micrologic 3.0A Trip Unit
Instantaneous protection protects equipment
against short circuits with no intentional time
delay.
long time
long time
alarm
Ir
tr
(s)
alarm
Ir
tr
(s)
8
.8
8
.8
.7
.9
.95
.98
4
12
16
20
24
.7
.9
.95
.98
4
12
16
20
24
.6
.5
.4
2
1
.6
.5
.4
2
1
1
.5
1
.5
x In
@ 6 Ir
x In
@ 6 Ir
instantaneous
instantaneous
•
Instantaneous protection (Ii) (A) is standard
on the 3.0A, 5.0A and 6.0A trip units.
Instantaneous protection on 2.0A trip units is
achieved by using short-time protection (Isd)
with the short-time delay factory set to 0
(zero).
Isd
Ii
4
5
3
5
4
6
2.5
2
6
8
3
2
8
10
1.5
10
1.5
12
x Ir
•
x In
A
A
setting
setting
•
Instantaneous protection on the 3.0A, 5.0A
and 6.0A trip units is based on the circuit
breaker sensor rating (In).
Micrologic 5.0A Trip Unit
Micrologic 6.0A Trip Unit
long time
long time
alarm
Ir
tr
(s)
alarm
Ir
tr
(s)
8
.8
8
.8
•
•
•
•
Instantaneous protection on the 2.0A trip unit
is based on the long-time pickup setting (Ir).
Circuit breaker open command is issued as
soon as threshold current is exceeded.
Instantaneous protection uses peak current
measurement.
When instantaneous protection switch is set
to off, the instantaneous protection is
disabled.
.7
.9
.95
.98
4
12
16
20
24
.7
.9
.95
.98
4
12
16
20
24
.6
.5
2
1
.6
.5
2
1
.4
1
.5
.4
1
.5
x In
@ 6 Ir
x In
@ 6 Ir
short time
instantaneous
short time
instantaneous
tsd
I i
Isd
tsd
I i
Isd
4
8
.4
.4 .4
(s)
.3
0
4
8
(s)
.4
.3
5
6
2
10
12
15
off
x In
3
3
5
5
10
12
15
off
4
3
6
8
.
.
3
.
2
1
2.5
2
.3
.2
.2
.1
2.5
2
6
8
4
3
2
.
.
1
0
off
.1
2
1.5
10
2
1.5
10
2
A
A
on
I
t
off
x Ir
on
I
t
x In
x Ir
setting
delay
setting
delay
test
Ig
tg
(s)
.4
E
.4
.3
D
F
.
.
3
.
2
1
C
B
G
H
2
.
.
1
0
off
A
J
2
on
I
t
ground fault
Table 3:
Setting
Micrologic Instantaneous Values
Interruption Current
2.0A Isd (= Ir x..)
3.0A Ii (= In x..)
5.0A Ii (= In x..)
6.0A Ii (= In x..)
1.5
1.5
2
2
2
3
3
2.5
3
3
4
6
6
4
5
8
8
5
6
8
8
10
12
off
off
6
10
15
15
4
10
10
12
12
2
4
Ii = UL and ANSI instantaneous
Isd = IEC instantaneous (short-time with zero delay)
In = sensor rating
Ir = long-time pickup
12-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
Figure 10: Ground-Fault Protection Switches
Ground-Fault Protection
Micrologic 6.0A Trip Unit
Equipment ground-fault protection protects
conductors against overheating and faults from
ground-fault currents (ꢁꢀ1200 A).
long time
alarm
Ir
tr
(s)
8
.8
.7
.9
.95
.98
4
12
16
20
24
.6
.5
2
1
.4
1
.5
x In
@ 6 Ir
short time
instantaneous
Isd
tsd
I i
•
Equipment ground-fault protection is
standard on 6.0A trip units.
.
4
4
8
(s)
.
4
.3
3
5
5
10
12
15
off
.
3
.
2
1
2.5
2
6
8
4
3
.
2
.
.
1
0
off
2
1.5
10
2
x Ir
on
I
t
x In
•
Ground-fault pickup (Ig) (A) sets ground
current level where circuit breaker will trip
after the preset time delay.
Ground-fault delay (tg) (B) sets the length of
time that the circuit breaker will carry a
ground-fault current above the ground-fault
pickup current level before tripping.
Equipment ground-fault protection can be
zone-selective interlocked (ZSI) with
upstream or downstream circuit breakers.
Setting the ground-fault delay (tg) to the 0
setting turns off zone-selective interlocking.
setting
delay
test
Ig
tg
(s)
.
4
E
.
4
.3
D
F
.
.
3
.
2
1
C
B
G
H
2
.
.1
0
off
A
J
2
on
I
t
ground fault
A
B
•
•
Table 4:
Micrologic Trip Unit Ground-Fault Pickup Values
Ig (= In x....)
A
B
C
D
E
F
G
H
J
1
1
In ꢁ 400 A
0.3
0.2
0.3
0.3
0.4
0.4
0.5
0.5
0.6
0.6
0.7
0.7
0.8
0.8
0.9
0.9
•
•
400 A < In ꢁ 1200 A
In > 1200 A
500 A 640 A 720 A 800 A 880 A 960 A 1040 A 1120 A 1200 A
Neutral protection and equipment ground-
fault protection are independent and can
operate concurrently.
In = sensor rating.
Ig = ground-fault pickup.
Table 5:
Micrologic Trip Unit Ground-Fault Delay Values
Ground-Fault Delay
Setting
2
I t off (ms at In) (seconds)
0
–
0.1
0.1
80
0.2
0.2
140
200
0.3
0.3
230
320
0.4
2
I t on (ms at In) (seconds)
0.4
tsd (min. trip) (milliseconds) 20
350
500
tsd (max. trip) (milliseconds) 80
140
2
2
NOTE: Use I t off with ZSI for proper coordination. Using I t on with ZSI is
not recommended as the delay in the upstream device receiving a restraint
signal could result in the trip unit tripping in a time shorter than the
published trip curve.
Indicator Lights
Figure 11: Overload Indicator Light
Overload Indicator Light
long time
alarm
Ir
tr
(s)
The overload indicator light (A) lights when the Ir
long-time pickup level has been exceeded (over
100% on the bar graph).
8
.8
.7
.9
.95
.98
4
12
16
20
24
.6
.5
2
1
A
.4
1
.5
x In
@ 6 Ir
short time
instantaneous
Isd
tsd
I i
%
%
100
40
.
4
4
4
.
4
.3
3
5
3
5
2.5
2
.
3
.
2
1
2.5
2
6
8
6
8
.
2
.
.
1
0
1.5
10
1.5
10
x In
2
on
x Ir
I
t
setting
delay
test
IΔn
ΔI
(ms)
(A)
5
230
140
60
3
7
350
800
2
1
10
20
.5
30
earth leakage
© 1999–2012 Schneider Electric All Rights Reserved
13-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
48049-136-05
Rev. 01, 07/2012
Figure 12: Trip Indicator Lights
Trip Indicator Lights
C D
A B
The Ir trip indicator light (A) lights when a trip
occurs because the Ir long-time pickup level was
exceeded.
Micrologic 6.0 A
The Isd/Ii trip indicator light (B) lights when a trip
occurs because the Isd short-time pickup or the
Ii instantaneous pickup was exceeded.
The Ig trip indicator light (C) lights when a trip
occurs because the Ig ground fault pickup was
exceeded.
The Ap self-protection indicator light (D) lights
when the trip unit overheats, the instantaneous
override level is exceeded, or a trip unit power
supply failure occurs.
Figure 13: Ammeter
Ammeter
The ammeter monitors and displays the circuit
breaker currents. An alphanumeric screen (A)
continuously displays the phase at the highest
load. Navigation buttons (B) can be pressed to
display the various monitored currents.
A
B
100%
The process of checking the ammeter values
can be stopped at any time. After several
seconds, Micrologic trip units automatically
return to displaying the phase at the highest
load.
%
40
menu
See the following section for addition information
concerning the ammeter.
Trip Unit Testing
Trip unit functions can be tested using primary injection testing or secondary
injection testing.
Micrologic Trip Unit Configuration
Control Power
The A trip unit was designed to be used with or without an external 24 Vdc
power supply.
Table 6:
Pickup Values
The following will be powered and functional even if the trip unit is not
externally powered:
Sensor Plug Value Minimum Ground-Fault
(In)
Pickup
•
•
•
•
Fault protection for LSIG functions. The A trip unit is fully circuit powered
for fault protection.
LED trip indication (powered by an onboard battery). The battery’s only
function is to provide LED indication if all other power is off
All display functions and trip unit features power-up with current flow on
one phase greater than or equal to the values in Table 6.
Ground-fault push-to-trip button works for testing ground fault with
current flow on one phase greater than or equal to the values in Table 6.
100–250 A
30% of Sensor Rating
20% of Sensor Rating
500 A
400–1200 A
1600–6300 A
The ground-fault push-to-trip is also functional if a Hand-Held Test Kit or
Full-Function Test Kit is powering the trip unit.
14-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 1—General Information
The following will be powered and functional with external power:
•
•
All of the above functions which are functional without external power.
Ammeter and bar graph displays are functional with or without current
flowing through the circuit breaker. With current flow between 0 and 20%
of sensor value, the ammeter may not be accurate.
•
Trip settings and max. current readings can be accessed on the display
be pressing the navigation buttons with or without current flowing
through the circuit breaker.
•
•
Ground-fault push-to-trip button works for testing ground fault with or
without current flowing through the circuit breaker.
Optional Modbus communications are functional, using a separate 24
Vdc power supply for the circuit breaker communications module. This
separate 24 Vdc power supply is required to maintain the isolation
between the trip unit and communications.
The ground-fault push-to-trip is also functional if a Hand-Held Test Kit or
Full-Function Test Kit is powering the trip unit.
External Power Supply
The trip unit display can be powered by a 24 Vdc external power supply.
CAUTION
HAZARD OF SHOCK, ARC FLASH OR
EQUIPMENT DAMAGE
Table 7:
Function
Power Supply Specifications
Specification
Power for Trip Unit Alone
24 Vdc, 50 mA
2400 V
Minimum Input-to-Output Isolation
Output (Including Max. 1% Ripple)
Dielectric Withstand (Input/Output)
Trip unit and communication module must use
separate power supplies.
5%
3 kV rms
Failure to follow this instruction can result
in personal injury or equipment damage.
Connections UC3
F1 (-)
Connections
24 Vdc
F2 (+)
Power supply is used for graphic scree display when the circuit breaker is
open or not carrying current.
© 1999–2012 Schneider Electric All Rights Reserved
15-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 2—Ammeter
48049-136-05
Rev. 01, 07/2012
Section 2—Ammeter
Display
NOTE: The ammeter display will function only if the trip unit is powered. The
trip unit is powered by the circuit breaker carrying more than 0.20 x In of
load current, by being connected to a 24 Vdc external power supply, or by
having the Full-Function Test Kit or Hand-Held Test Kit connected and on.
Even with external power supplied, current through the circuit breaker must
exceed 0.20 x In for the ammeter reading to be accurate to within 1.5%.
A. Alphanumeric screen: Displays ammeter
information
B. Bar graph: Displays currents using an LED
bar graph
Figure 14: Ammeter
A
C. Menu button: Used to navigate between the
various menus
D. Scroll button: Used to scroll to the next
screen in the menus
B
100%
The default display is the current value of the
phase at the highest load.
%
40
C
D
If no information is displayed, contact the local
field office.
menu
Ammeter Measurements
Micrologic A trip units measure the true RMS
value of currents. They provide continuous
current measurement from 0.2 to 20 x In with an
accuracy of 1.5% (including sensors). No
auxiliary source is needed where I > 0.2 x In.
The optional external power supply (24 Vdc)
makes it possible to display currents where
I < 0.2 x In and to store values of the interrupted
current.
A digital LCD screen continuously displays the
most heavily loaded phases (Imax) or displays
the Ia, Ib, Ic, Ig, and (on 4-pole circuit breakers
only) In stored current and setting values by
successively pressing the navigation button.
Figure 15: Menus
Accessing Information
B–Peak Currents
C–Switch Settings
A–Currents
Three different menus can be accessed:
Max
Ir=
A. Current measurements
B. Stored peak current measurements
C. Switch settings
A
A
A
In addition, the ammeter can be used to address
the circuit breaker communication module
(BCM) in circuit breakers which have the
optional circuit breaker communication module
installed.
1.125 x Ir
1 x Ir
0.8 x Ir
0.6 x Ir
0.4 x Ir
%
%
100
40
%
%
100
40
%
100
%
40
16-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 2—Ammeter
To access the next menu, press the menu
button (A). To access the next screen in a menu,
press the scroll button (B).
Figure 16: Navigation Buttons
A
B
menu
Figure 17: Current Menus
A–A-Phase Current (IA)
Current Menu
B–B-Phase Current (IB)
The current (default) menu displays:
A. Phase current (IA) in A phase
B. Phase current (IB) in B phase
C. Phase current (IC) in C phase
A
A
D. Ground-fault current (Ig) (Micrologic 6.0A trip
units only)
E. Neutral current (In)
To display next current, press scroll button.
%
%
100
40
%
%
100
40
NOTE: Neutral current is only displayed with a
4-pole circuit breaker with the neutral protection
set to half or full. Refer to bulletin 48041-082-03
for NC CT wiring guidelines.
C–C-Phase Current (IC)
D–Ground-Fault Current (Ig)
A
A
%
%
100
40
%
%
100
40
Return to A-Phase Current
E–Neutral Current (In)
A
A
%
%
%
%
100
40
100
40
© 1999–2012 Schneider Electric All Rights Reserved
17-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 2—Ammeter
48049-136-05
Rev. 01, 07/2012
Figure 18: Access the Peak Menu
Current Menu
Peak Menu
Peak Menu
To access the peak menu:
Max
menu
1. Current menu is displayed.
2. Press menu button.
A
A
3. Peak menu appears.
To access menu screens, press scroll button.
%
%
100
40
%
%
100
40
The peak menu displays:
Figure 19: Peak Menus
A–Peak A-Phase Current (IpA)
B–Peak B-Phase Current (IpB)
A. Peak current (IpA) in A phase
B. Peak current (IpB) in B phase
C. Peak current (IpC) in C phase
Max
A
Max
A
D. Peak ground-fault current (Ipg) (Micrologic
6.0A trip unit only)
E. Peak neutral current (Ipn)
To display next peak current, press scroll button.
%
%
100
40
%
%
100
40
To reset a max value, scroll to the particular max
value screen to be reset and hold the scroll
button for three seconds.
C–Peak C-Phase Current (IpC)
D–Peak Ground-Fault Current (Ipg)
Max
A
Max
A
%
%
%
%
100
40
100
40
E–Peak Neutral Current (Ipn)
Return to Peak A-Phase Current
Max
A
Max
A
%
%
%
%
100
40
100
40
18-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 2—Ammeter
Figure 20: Access the Switch Settings Menu
Switch Settings Menu
Peak Menu
Switch Settings Menu
The switch settings menu displays the values at
which the switches are set.
Max
menu
Ir=
A
A
To access the switch settings menu:
1. Peak menu is displayed.
2. Press menu button.
3. Switch settings menu will appear.
To access menu screens, press scroll button.
%
100
%
100
The switch settings menu displays:
Figure 21: Trip Unit Switch Settings
A–Ir Setting
A. Long-time pickup (Ir) setting
B. Long-time delay (tr) setting
C. Short-time pickup (Isd) setting
D. Short-time delay (tsd) setting
E. Instantaneous pickup (Ii) setting
B–tr Setting
tr=
s
Ir=
A
F. Ground-fault pickup (Ig) setting (6.0A trip
units only)
G. Ground-fault delay (tg) setting (6.0A trip
units only)
C–Isd Setting
D–tsd Setting
tsd=
Isd=
s
A
To display next switch setting, press scroll
button.
E–Ii Setting
F–Ig Setting
Ii=
A
A
Ig=
G–tg Setting
A–Ir Setting
s
Ir=
A
tg=
To return to the current menu:
Figure 22: Return to Current Menu
1. Switch settings menu is displayed.
2. Press menu button.
Switch Settings Menu
Current Menu
menu
3. Current menu will appear.
Ir=
A
A
Or wait several seconds and ammeter will
automatically return to the current (i.e., default)
menu.
%
%
100
100
© 1999–2012 Schneider Electric All Rights Reserved
19-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 3—Operation
48049-136-05
Rev. 01, 07/2012
Section 3—Operation
Figure 23: Adjust Switch Settings
Switch Setting Adjustment
1. Open switch cover (A).
2. Adjust the appropriate switches (B) to
desired values.
3. Replace switch cover. Use wire seal
MICROTUSEAL (C, not provided), if
necessary, to provide tamper evidence.
A
C
B
Figure 24: Circuit Breaker Rating
Examples
Circuit breaker is rated 2000 A.
In 2000 A
Figure 25: Set Pickup Levels
Micrologic 2.0A Trip Unit
In = 2000 A
long time
1. Set pickup levels.
alarm
Ir
.8
.7
.9
.95
.98
t
Ir = 0.7 x In = 1400 A
Isd = 2 x Ir = 2800 A
.6
.5
.4
1
x In
instantaneous
Isd
4
5
3
2.5
2
6
8
10
1.5
x Ir
setting
0
Ir
Isd
20-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 3—Operation
2. Set time delay.
Figure 26: Set Time Delay
tr = 1 s (at 6 x Ir)
long time
alarm
tr
(s)
8
4
12
16
20
24
2
1
t
.5
@ 6 Ir
1 s
tr
0
I
Figure 27: Set Pickup Levels
Micrologic 3.0A Trip Unit
In = 2000 A
long time
alarm
Ir
1. Set pickup levels.
.8
.7
.9
.95
.98
Ir = 0.7 x In = 1400 A
Ii = 3 x In = 6000 A
t
.6
.5
Ir
.4
1
x In
instantaneous
Ii
5
6
4
3
2
8
10
12
1.5
setting
x In
Ii
0
I
2. Set time delay.
Figure 28: Set Time Delay
tr = 1 s (at 6 x Ir)
long time
alarm
tr
8
(s)
4
12
16
20
24
2
1
t
.5
@ 6 Ir
1 s
tr
0
I
Figure 29: Set Pickup Levels
Micrologic 5.0A Trip Unit
In = 2000 A
long time
1. Set pickup levels.
alarm
Ir
.8
.7
.9
.95
.98
Ir = 0.7 x In = 1400 A
Ii = 6 x In = 12000 A
Isd = 2 x Ir = 2800 A
t
.6
.5
Ir
.4
1
x In
short time
instantaneous
Isd
I i
8
4
5
6
10
12
15
off
x In
3
2.5
2
4
3
6
8
Isd
2
1.5
10
off
x Ir
setting
Ii
0
I
© 1999–2012 Schneider Electric All Rights Reserved
21-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 3—Operation
48049-136-05
Rev. 01, 07/2012
2. Set time delay.
Figure 30: Set Time Delays
long time
tr = 1 s (at 6 x Ir)
alarm
tr
(s)
8
4
12
16
20
24
2
1
t
2
tsd = 0.2 s I t on
.5
@ 6 Ir
short time
tr
tsd
1 s
.
4
.
4
.3
.
.
2
1
I2t on
I2t off
.
3
2
.
.
1
0
2
on
I
t
tsd
delay
0.2 s
0
Figure 31: Set Pickup Levels
Micrologic 6.0A Trip Unit
t
Ir
1. Set pickup levels.
long time
alarm
Ir
.8
.7
.9
.95
.98
In = 2000 A
.6
.5
Ir = 0.7 x In = 1400 A
.4
1
Isd
x In
short time
instantaneous
Is
I
4
8
3
5
6
10
12
Ii = 6 x In = 12000 A
Isd = 2 x Ir = 2800 A
Ii
2.5
2
6
8
4
3
15
off
1.5
1
2
0
t
I
x Ir
x In
setting
Ig
E
D
F
G
BꢂIg = 640 A
C
H
B
J
A
ground fault
Ig
0
t
I
2. Set time delays.
Figure 32: Set Pickup Levels
long time
tr
alarm
tr
1 s
8
(s)
tr = 1 s (at 6 x Ir)
4
12
16
20
24
2
1
.5
@ 6 Ir
tsd
0.2 s
short time
instantaneous
tsd
.4 .4
.3.2
2
(s)
tsd = 0.2 s I t on
.3
.2
.1
0
I
.1
0
off
2
I2t on
I2t off
on
I
t
delay
tg
(s)
.4 .3
t
.4
.3
.2
.1
on
.2
.1
2
0
2
off
tg = 0.2 s I t on
I
t
ground fault
tg
0.2 s
0
I
22-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 3—Operation
Table 8:
ZSI Combinations
Zone-Selective Interlocking (ZSI)
The number of devices which can be interlocked
are shown in Table 8.
Upstream Device
(receives input from RIM)
Downstream Device
(sends output to RIM)
Micrologic #.0x Trip Units
15
R
R
R
R
15
R
15
R
R
26
15
Square D Micrologic Series B Trip Units
Square D GC-100 Ground-Fault Relay
for Equipment Protection
R
R
R
7
R
R
R
R
Square D GC-200 Ground-Fault Relay
for Equipment Protection
15
R
15
15
15
15
R
R
R
R
15
15
15
15
R
R
Merlin Gerin STR58 Trip Units
Merlin Gerin STR53 Trip Units
Federal Pioneer USRC and USRCM Trip
Units
R
R
15
5
R
R
R
R
R
R
15
R
Square D Add-On Ground Fault Module
for Equipment Protection
R—RIM module is required to restrain any devices.
Numerical References—Maximum number of upstream circuit breakers which can be restrained
without requiring a RIM Module.
Circuit breaker terminals are shipped with
terminals Z3, Z4 and Z5 jumpered to self-
restrain the short-time and ground-fault
functions. Remove the jumpers when activating
zone-selective interlocking.
Figure 33: Jumpered Terminals
UC1
Z5
Z3
Z1
M1
Z4
Z2
Auxiliary Connections
© 1999–2012 Schneider Electric All Rights Reserved
23-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 3—Operation
48049-136-05
Rev. 01, 07/2012
Wire circuit breakers for zone-selective
interlocking.
Figure 34: ZSI Wiring Example
UC1
Z5
M1
Z4
Z2
Z3
Z1
UC1
Z5
Auxiliary
M1
Z4
Z2
Connections 1
Z3
Z1
UC1
Secondary
Connector
Position
Auxiliary
Connections 2
Z5
M1
Z4
Z2
Z3
Z1
Description
ZSI out signal
ZSI out
ZSI in signal
ZSI in short time
ZSI in ground fault
Z1
Z2
Z3
Z4
Z5
Auxiliary
Connections 3
Figure 35: Access Communication Module Menu
Communication Module values
Current Menu
Communications Address
If the optional circuit breaker communication
module (BCM) is installed, use the ammeter to
set communication module values.
menu
A
To access the communication module menu:
1. Current menu is displayed.
2. Simultaneously press both menu button and
scroll button down for three seconds.
%
100
%
100
3. Communication module addressing menu
will appear.
24-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 3—Operation
Set communication module values:
Figure 36: Set Communication Module Values
Communications Address
1. Press and release scroll button to sequence
addresses (1 through 47). When the correct
address number is reached, enter the value
by pressing and holding scroll button until
the display stops flashing.
Baud Rate
Baud rate screen will appear after address
has been entered.
2. Press and release scroll button to sequence
baud rates (4.8k, 9.6k or 19.2k). When the
desired baud rate appears, enter the value
by pressing and holding scroll button until
the display stops flashing.
Parity
Baud Rate
Parity screen will appear after baud rate has
been entered.
Language
3. Press and release scroll button to sequence
parities (E [even] or n [none]). When the
desired parity appears, enter the value by
pressing and holding scroll button until the
display stops flashing.
Parity
Languages screen will appear after parity
has been entered.
4. Press and release scroll button to scroll
through languages (French [Fr], US English
[En US], UK English [En], German [d],
Spanish [SP] or Italian [It]). When the
desired language appears, enter the value
by pressing and holding scroll button until
the display stops flashing.
Language
Ammeter display will return to the default
screen after language is entered.
After the communication module values have
been set, ammeter will automatically return to
the current (i.e., default) menu.
After setting circuit breaker communication
module values, drawout circuit breakers must
have the cradle communication module, if
available, activated. For drawout circuit
breakers, refer to the cradle communication
module instructions to complete setup.
© 1999–2012 Schneider Electric All Rights Reserved
25-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 3—Operation
48049-136-05
Rev. 01, 07/2012
Table 9:
Trip Unit Settings
Window
Trip Unit Settings Check
Setting
2.0A 3.0A 5.0A 6.0A
Use the ammeter switch setting menu to check
the trip unit settings.
menu
menu
1. Press menu button twice.
2. Switch settings menu will appear.
3. Press scroll button to advance to next
screen.
4. After checking trip unit settings, press menu
button once to return to main menu.
Long-Time
Ir
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Ir=
Pickup
A
tr=
Long-Time
Delay
s
tr
Isd=
Short-Time
Pickup
Isd
tsd
Ii
A
tsd=
s
Short-Time
Delay
Instantaneous
Pickup
X
Ii=
A
Ground-Fault
Pickup
Ig
tg
A
s
Ig=
Ground-Fault
Delay
tg=
Figure 37: Verify Trip Unit Operation
Trip Unit Operation Verification
Use a test kit connected to the trip unit test plug
receptacle (A) to verify trip unit is functioning as
desired. See instructions shipped with test kit to
perform verification tests.
A
26-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 3—Operation
NOTE: Trip unit must be powered to test ground-fault trip function. The trip
unit is powered if the circuit breaker is carrying more than 0.20 x In of load
current, if the 24 Vdc external power supply is connected or if the Full-
Function Test Kit or Hand-Held Test Kit is connected and on.
Equipment Ground-Fault Trip
Functions Testing
Paragraph 230-95 (c) of the National Electrical
Code requires that all equipment ground-fault
protection systems be tested when first installed.
Figure 38: Test Equipment Ground-Fault Trip Function
With the circuit breaker closed, test the ground-
fault (Micrologic 6.0A trip unit only) trip
6.0
A
ic
log
o
icr
M
functions. For instructions on how to close circuit
breaker, refer to the circuit breaker installation
instructions shipped with the circuit breaker.
%
0
0
0
1
%
4
1. Press the ground-fault test button (A). Circuit
breaker should trip.
2. If circuit breaker does not trip, contact the
local field office.
u
men
A
Figure 39: Reset Trip Unit
Trip Unit Resetting
A
Micrologic 6.0 A
When the circuit breaker trips, the fault indicator
will remain lit until the trip unit is reset.
Press the reset/test button (A) to reset the trip
unit after trip.
Do not return circuit breaker to service until cause
of trip is determined. For more information, refer
to the circuit breaker installation instructions
shipped with the circuit breaker.
NOTE: Trip unit must be powered to test battery. The trip unit is powered if
the circuit breaker is carrying more than 0.20 x In of load current, if the 24
Vdc external power supply is connected or if the Full-Function Test Kit or
Hand-Held Test Kit is connected and on.
Trip Unit Status Check
To check trip unit battery and trip indicators,
press the test/reset button (A).
Figure 40: Check Trip Unit Status
B
Charged
A
•
•
•
All trip indicators (B) will light up
Battery status will be displayed
If no battery status is displayed, there is no
battery installed.
Half-Charged
Micrologic 6.0 A
Change Battery
•
•
The battery bar graph reading is valid after
the reset button has been released.
If the battery bar graph shows the battery
needs to be changed, use Square D battery
catalog number S33593:
— lithium battery
— 1.2AA, 3.6 V, 800 ma/h
For instructions on replacing battery, see
Section 6—Battery Replacement.
© 1999–2012 Schneider Electric All Rights Reserved
27-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 4—Trip Unit Replacement
48049-136-05
Rev. 01, 07/2012
Section 4—Trip Unit Replacement
Trip unit replacement must be done by qualified
persons, as defined by the National Electric
Code, who are familiar with the installation and
maintenance of power circuit breakers.
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Failure to follow these instructions for installation, trip test and primary
injection testing may result in the failure of some or all protective function.
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices. See NFPA 70E or CSA Z462.
• Replacement/upgrading of a trip unit in the field must be done by
qualified persons, as defined by the National Electric Code, who are
familiar with the installation and maintenance of power circuit breakers.
Before replacing trip unit, confirm that the circuit
breaker is in good working condition. If the
condition of the circuit breaker is unknown, do
not proceed. For assistance in evaluating the
condition of the circuit breaker, call Technical
Support.
Read this entire section before starting the
replacement procedure.
• Before replacing/upgrading trip unit, confirm that the circuit breaker is in
good working condition. If the condition of the circuit breaker is unknown,
do not proceed. For assistance in evaluating the condition of the circuit
breaker, call Technical Support.
• If the circuit breaker fails to function properly in any manner upon
completion of the trip unit installation, immediately remove the circuit
breaker from service and call Field Services.
NOTE: If trip unit being replaced is a Micrologic
2.0, 3.0 or 5.0 trip unit, order connector block
S33101 and circuit breaker or cradle wiring
harness if necessary.
• Turn off all power supplying this equipment before working on or inside
equipment. Follow instructions shipped with circuit breaker to disconnect
and reconnect circuit breaker.
• Replace all devices, doors and covers before returning equipment to
service.
Failure to follow this instruction will result in death or serious injury.
Required Tools
Preparation
•
•
Torque-controlled screwdriver, set at 7 in-lbs (0.8 N•m) 10%
(Lindstrom torque driver MAL500-2 or equivalent)
Micrologic Full-Function Test Kit (part number S33595)
Record Switch Settings
Record all trip unit switch settings for later use.
Circuit Breaker Disconnection
Disconnect circuit breaker as directed in the circuit breaker instruction
bulletin shipped with the circuit breaker. The circuit breaker must be
completely isolated. (For a drawout circuit breaker, place circuit breaker in
the disconnected position. For a fixed-mounted circuit breaker, all voltage
sources, including auxiliary power, must be disconnected.)
Circuit Breaker Accessory Cover
Removal
Remove circuit breaker accessory cover as directed in the Install
Accessories section of the circuit breaker instruction bulletin shipped with
the circuit breaker.
28-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 4—Trip Unit Replacement
Figure 41: Remove Adjustable Rating Plug
Rating Plug Removal
B
C
A small Phillips screwdriver is needed to remove
the adjustable rating plug.
1. Open switch cover (A).
m
ar
al
e
m
8
ti
g
r
2
2. Unscrew adjustable rating plug mounting
screw (B).
on
t
1
l
)
4
(s
1
6
0
.8
Ir
.9
.9
.9
2
1
.7
2
4
5
8
2
.6
.5
s
u
eo
n
ta
.5
6
I
r
@
an
st
in
1
ous
.
4
I
n
ane
nt
x
a
st
i
I
4
5
in
e
m
3
.5
ti
6
8
t
or
4
.
.
3
I
i
sh
t
sd
4
5
.
4
2
.
.
2
e
3
m
6
8
ti
d
rt
4
Is
4
2
1.
.
.
3
sho
5
3
.
.
.5
2
0
1
4
2
1
.
3
3
6
8
5
.
2
.
1
m
alar
2
In
d
Is
0
x
4
.5
2
2
5
.
.
0
1
.
1
2
3
6
8
5
.
t
1
e
m
I
ti
8
2
.
g
0
In
t
r
2
1
n
.5
0
x
1
o
y
2
lon
.8
a
.5
d
el
)
4
1
1
(s
6
0
2
1
Ir
x
2
1
t
y
ela
Ir
.9
.95
.98
I
g
tt
in
0
2
1
1
n
se
o
.7
2
4
.5
d
Ir
x
2
.6
.5
.4
ing
ett
.5
Ir
3. Remove adjustable rating plug (C). Save for
installation in replacement trip unit.
s
@
6
1
In
x
A
Figure 42: Remove Existing Trip Unit
A
Trip Unit Removal
1. Remove connector block (A) from top of trip
unit, if present.
2. Loosen two trip unit screws (B).
3. Slide out trip unit (C).
B
C
Trip Unit Replacement
NOTE: Battery holder with battery is located under the side flap in the
cardboard box the trip unit is shipped in.
Battery Installation
If a new trip unit is being installed, install the trip
unit battery.
Figure 43: Install Battery
Install battery holder with battery (A) in trip unit,
observing the correct polarity as indicated on the
battery compartment.
A
Y
TRE
LHTIUMBA
36.VL-50/S
OCSHEIN
Press test/reset button (A). All four indicator
lights (B) should light. If they do not light, check
polarity of battery and retest. If indicator lights
still do not light up when test/reset button is
pressed, stop installation and contact the local
sales office for factory authorized service
Figure 44: Trip Indicator Lights
B
A
Micrologic 6.0 A
© 1999–2012 Schneider Electric All Rights Reserved
29-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 4—Trip Unit Replacement
48049-136-05
Rev. 01, 07/2012
Trip Unit Installation
1. Inspect trip unit connector pins and surfaces.
If there is any damage, misaligned pins, or
contamination, stop installation and contact
the local sales office for factory authorized
service.
2. Inspect trip unit mounting base on the circuit
breaker. Clear any debris from area and
check that all accessory wiring is properly
routed for the trip unit being installed. If there
is any damage or contamination, stop
installation and contact the local sales office
for factory authorized service.
Figure 45: Install Trip Unit
Masterpact NW Circuit Breaker
3. For Masterpact NW circuit breaker only:
Manually depress trip unit interlock (A) and
hold it in place during steps 4–6 below.
4. Align guide rail (B) on bottom of trip unit with
guide rail slot (C) on trip unit mounting base
in circuit breaker and gently slide the trip unit
in until it stops.
NOTE: The Masterpact NT and NW trip unit
mounting bases are shock mounted and
therefore can flex slightly.
C
A
B
NOTICE
HAZARD OF EQUIPMENT DAMAGE
Check installation of trip unit to assure proper
connections and seating.
Failure to follow this instruction can result
in equipment damage or improper circuit
breaker tripping.
30-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 4—Trip Unit Replacement
5. Align the trip unit so top mounting screw (A)
aligns with the top threaded insert and start
the screw by turning the screw two full
rotations.
Figure 46: Install Trip Unit
A
6. Use a torque-controlled screwdriver to drive
the bottom screw (B) to 7 in-lbs (0.8 N•m)
10%. The back of the trip unit must be flush
with the trip unit mounting base.
7. Use a torque-controlled screwdriver to drive
the top screw to 7 in-lbs (0.8 N•m) 10%.
Mounting tab must be flush with the mounting
standoff and sensor plug.
Must be
seated
7 lb-in
[0.8 N•m]
B
NOTE: The face of the closed switch cover must
be flush with adjoining mounting base surfaces.
If these surfaces are not flush, stop installation
and contact the local sales office for factory
authorized service.
Must be flush
C
NOTE: If you are upgrading from a Micrologic
2.0, 3.0 or 5.0 trip unit, the connector block must
be ordered separately (Part Number S33101).
See instructions shipped with the connector
block for installation into circuit breaker.
8. Install connector block (C) into top of trip
unit.
9. Install adjustable rating plug into the trip unit.
a. Open switch cover (A) on new trip unit.
Figure 47: Install Adjustable Rating Plug
C
b. Inspect mounting area for debris and
contamination.
c. Gently push adjustable rating plug (B)
into new trip unit.
d. Tighten adjustable rating plug mounting
screw (C). The plug will be drawn into
position flush with front face as screw is
tightened.
B
m
ar
al
e
m
ti
8
g
n
r
2
t
1
lo
4
6
0
(
s)
1
.8
Ir
.9
2
1
.7
2
4
5
8
.9
.9
2
.6
.5
s
u
eo
n
ta
.5
6
I
r
@
an
st
in
1
.
4
I
n
x
i
I
4
5
us
o
e
n
e
t
im
3
6
8
ta
n
t
r
ho
d
.
4
ta
.
3
s
t
s
ins
.5
.
4
2
.
.
2
d
Is
i
I
4
4
2
1.
5
5
.
.
3
1
10
3
3
6
8
5
6
8
t
rt
sho
3
7 lb-in
[0.8 N•m]
t
.
2
0
x
In
.5
2
2.5
2
1
.
.
1
2
t
2
1
m
d
lar
2
1.
Is
4
a
I
d
e
5
3
10
n
.
.
o
0
y
la
1
5
3
6
8
5
.
Ir
8
x
2
.
g
time
In
tr
1
2
.5
2
1
0
x
lon
.8
g
2
tt
in
1
st
(s
)
4
6
0
se
2
te
1
t
Ir
.9
.9
.98
I
10
n
2
1
o
y
.7
2
4
5
.5
ela
r
I
x
2
.6
.5
.4
g
d
tin
.5
Ir
6
set
@
1
In
x
A
A
10. Set trip unit switches to values recorded
above or per coordination study results.
11. Close switch cover (A).
Circuit Breaker Accessory Cover
Replacement
Replace circuit breaker accessory cover as directed in the Install
Accessories section of the circuit breaker instruction bulletin shipped with
the circuit breaker.
© 1999–2012 Schneider Electric All Rights Reserved
31-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 4—Trip Unit Replacement
48049-136-05
Rev. 01, 07/2012
Trip Unit Installation Check
Field installation of a trip unit requires secondary injection testing with the
Full-Function Test Kit. to ensure that the newly-installed trip unit is
functioning properly. The test will require opening and closing the circuit
breaker. Follow the procedures outlined in the instruction bulletins shipped
with the circuit breaker and the test kit.
Secondary Injection Testing
1. Make sure the circuit breaker is isolated from all upstream and
downstream devices.
2. Perform secondary injection testing as outlined in the instruction bulletin
shipped with the test kit. Verify that all applicable trip unit functions are
operating properly.
3. Repeat step 2 with the circuit breaker in the open position.
NOTE: The test kit states that the circuit breaker should be closed when
performing the test. Do not close the circuit breaker for this step.
4. If any test fails, do not put the circuit breaker into service and contact the
local sales office for factory authorization service.
Primary injection testing is recommended to ensure that all trip system
connections have been correctly made. Perform primary injection testing
per the instructions in the Field Testing and Maintenance Guide, bulletin
number 0600IB1201.
Primary Injection Testing
1. Installed accessories – Validate the proper operation of all installed
accessories. See the corresponding accessory instruction bulletins for
operational testing procedures.
Check Accessory Operation
2. Zone selective interlocking – If the circuit breaker is part of a ZSI system,
follow the zone selective interlocking test procedures as outlined in the
Full Function Test Kit instruction bulletin.
3. Communications – If communication modules exist, validate circuit
breaker has re-established communications with the supervisor.
Trip Unit Setup
1. If an auxiliary power supply is being used for the Micrologic trip unit,
reconnect the auxiliary power supply.
2. Reset the trip unit switches to original values, as recorded at the
beginning of this section.
Circuit Breaker Reconnection
Reconnect circuit breaker as directed in the circuit breaker instruction
bulletin shipped with the circuit breaker.
32-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 5—Adjustable Rating Plug Replacement
Section 5—Adjustable Rating Plug Replacement
NOTE: To select correct replacement rating
DANGER
plug, see the product catalog.
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
NOTE: If adjustable rating plug is removed, the
circuit breaker will default to a long-time pickup
rating of 0.4 x In and a long-time delay at
whatever setting was selected before the rating
plug was removed.
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices. See NFPA 70E or CSA Z462.
• This equipment must be installed and serviced only by qualified electrical
personnel.
• Turn off all power supplying this equipment before working on or inside
equipment. Follow instructions shipped with circuit breaker to disconnect
and reconnect circuit breaker.
• Replace all devices, doors and covers before returning equipment to
service.
Failure to follow this instruction will result in death or serious injury.
Figure 48: Remove Adjustable Rating Plug
Rating Plug Removal
B
C
1. Open circuit breaker contacts:
— For Masterpact NT and NW circuit
breakers, press the “Push to open”
button on the circuit breaker.
— For other circuit breakers, move handle
to the off (O) position.
m
ar
al
e
m
8
ti
g
r
2
n
t
1
lo
)
4
(s
1
6
0
.8
Ir
.9
.9
.9
2
1
.7
2
4
5
8
2
.6
.5
.4 In
s
u
eo
n
ta
.5
6
I
r
@
an
st
in
1
ous
tane
n
x
a
st
i
I
4
5
in
e
m
3
ti
6
8
rt
.
4
o
sd
.
3
I
i
s
h
t
4
5
.5
.
4
2
.
.
2
e
3
m
6
8
ti
d
rt
ho
4
Is
4
2
1.
.
.
3
s
5
3
.
.
.5
2
0
1
4
2
1
.
3
3
6
8
5
.
2
.
1
m
alar
2
In
d
Is
0
x
4
.5
2
2
5
.
.
0
1
.
1
2
3
6
8
5
.
t
1
e
m
I
ti
8
2
.
g
0
In
t
r
)
(s
2
1
n
.5
0
x
1
o
y
2
lon
.8
a
.5
d
el
4
1
1
2
16
0
Ir
x
se
2
1
t
Ir
.9
.9
.98
I
g
tt
in
0
2
1
1
n
o
y
.7
2
4
5
.5
d
ela
Ir
x
2
.6
.5
.4
ing
tt
.5
Ir
se
@
6
1
In
x
2. Open switch cover (A).
3. Unscrew adjustable rating plug mounting
screw (B).
4. Remove adjustable rating plug (C).
A
Figure 49: Install New Adjustable Rating Plug
A
New Rating Plug Installation
B
1. Inspect mounting area for debris and
contamination.
2. Gently push in new adjustable rating plug
(A).
3. Tighten adjustable rating plug mounting
screw (B).
m
ar
al
e
m
8
ti
g
r
2
n
t
1
lo
(
s)
4
6
1
0
.8
Ir
.9
.9
.9
2
1
.7
2
4
5
8
2
.6
.5
.4
s
u
eo
n
ta
I
r
.5
6
@
an
st
in
1
n
I
x
i
I
4
5
us
o
e
3
e
n
6
8
ta
t
t
im
n
r
.
4
ta
ho
.
3
s
t
sd
ins
.5
.
3
4
2
.
.
2
d
Is
i
I
4
4
2
1.
5
5
.
.
0
1
1
3
e
3
6
8
5
6
8
t
rt
ho
3
2
In
s
.5
2
0
x
.5
2
.
1
2
t
2
.
1
m
d
3
lar
2
1.
Is
4
2
1
a
I
d
e
5
3
10
n
o
.
.
0
y
la
1
5
6
8
.
5
Ir
8
x
2
.
n
time
In
ng
tr
1
2
.5
2
1.
0
x
lo
g
2
tt
in
1
st
(s
)
4
6
0
se
2
te
1
.8
t
Ir
.9
.9
.98
I
2
1
10
o
y
.7
2
4
5
5
d
ela
r
I
x
2
.6
.5
.4
g
tin
set
.5
Ir
6
@
1
In
x
4. Set the switches on the trip unit (see Section
3 —Operation).
5. Close switch cover (C).
C
© 1999–2012 Schneider Electric All Rights Reserved
33-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 6—Battery Replacement
48049-136-05
Rev. 01, 07/2012
Section 6—Battery Replacement
Circuit Breaker Disconnection
DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
Disconnect circuit breaker as directed in the
circuit breaker instruction bulletin shipped with
the circuit breaker.
• Apply appropriate personal protective equipment (PPE) and follow safe
electrical work practices. See NFPA 70E or CSA Z462.
• This equipment must be installed and serviced only by qualified electrical
personnel.
• Turn off all power supplying this equipment before working on or inside
equipment. Follow instructions shipped with circuit breaker to disconnect
and reconnect circuit breaker.
Circuit Breaker Accessory Cover
Removal
Remove circuit breaker accessory cover as
directed in the Install Accessories section of the
circuit breaker instruction bulletin shipped with
the circuit breaker.
• Replace all devices, doors and covers before returning equipment to
service.
Failure to follow this instruction will result in death or serious injury.
Figure 50: Shift Withstand Module
Withstand Module Shifting
NOTE: R-frame and NS1600b–NS3200 circuit
breakers only.
Loosen screws (A) securing withstand module
(B). Swing module to side to access trip unit
battery cover. Do not remove withstand module
connector.
B
A
Figure 51: Remove Battery Cover
Battery Replacement
1. Insert small screwdriver blade into battery
housing cover notch and rotate to slide
battery housing cover (A) out of trip unit.
A
2. Remove battery (A).
Figure 52: Replace Battery
3. Insert new battery (B). Make sure that the
polarity is correct.
Y
Y
TRE
TRE
4. Replace battery housing cover (C).
Y
TRE
LHTIUMBA
LHTIUMBA
36.VL-50/S
36.VL-50/S
OCSHEIN
OCSHEIN
A
B
LHTIUMBA
36.VL-50/S
OCSHEIN
C
34-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Section 6—Battery Replacement
Figure 53: Replace Withstand Module
Withstand Module Replacement
NOTE: R-frame and NS1600b–NS3200 circuit
breakers only.
Replace withstand module (A). Tighten screws
(B) securing withstand module.
B
4.4 lb-in
[0.5 N•m]
A
Circuit Breaker Accessory Cover
Replacement
Replace circuit breaker accessory cover as directed in the Install
Accessories section of the circuit breaker instruction bulletin shipped with
the circuit breaker.
Circuit Breaker Reconnection
Reconnect circuit breaker as directed in the circuit breaker instruction
bulletin shipped with the circuit breaker.
© 1999–2012 Schneider Electric All Rights Reserved
35-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Appendix A—Register List
48049-136-05
Rev. 01, 07/2012
Appendix A—Register List
To access available registers, the following address scheme applies.
List of Registers
Module
Module Name
Equation
Address Range
The quantities are listed in alphabetical order
according to the SMS topic name.
BCM
CCM
PM
Circuit Breaker Communication Module --
1–47
Cradle Communication Module
BCM + 50
51–97
NOTE: A system scan rate of 500 ms or greater
is recommended to minimize communications
timeout issues.
Protection Module (Internal to trip unit) BCM + 100
101–147
201–247
MM
Meter Module (Internal to trip unit)
BCM + 200
This is an abbreviated list of registers. For a
complete list of registers, contact your local
sales office.
Table 10:
Register List
Number of
Registers*
SMS Topic Name User Description
Register* Module*† Units
Scale/Bitmask
810DBrkrStatus
810DBrkrTripStat
BCM_SN
Circuit Breaker Status
1
1
4
661
661
516
BCM
BCM
BCM
Bit 0; ON = closed, OFF = open
Bit 2; ON = tripped, OFF = not tripped
ASCII text
Circuit Breaker Trip Unit Status
BCM Serial Number
Bit 8 = disconnected
Bit 9 = connected
BkrPos
Circuit Breaker Position
1
661
CCM
Bit 10 = test position
‡
DT_3Regs
Device Clock Date/Time
Remote Closing Enabled
Remote Opening Enabled
3
1
1
679
669
669
BCM
BCM
BCM
3-register date/time format
EnableCloseBkr
EnableOpenBkr
Bit 2; ON = enabled, OFF = not enabled
Bit 1; ON = enabled, OFF = not enabled
Bit 3; ON = auto (enabled),
OFF = manual (not enabled)
EnableRemCtrl
Remote Control Enabled
1
669
BCM
IA
Current A
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
8821
8837
8822
8838
8823
8839
8825
8841
8842
8826
8820
8824
8840
8756
8827
8828
8829
8831
8832
8830
8750
661
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
PM
BCM
A
%
A
%
A
%
A
%
%
A
A
A
%
A
A
A
A
A
A
A
A
Unity
IA_PCT
IB
Current A % Load
Current B
Unity
Unity
IB_PCT
IC
Current B % Load
Current C
Unity
Unity
IC_PCT
IG
Current C % Load
Current G
Unity
Unity
IG_PCT
IG_PCT_VIGI
IG_VIGI
IMax
Current G % Load
Current G (VIGI) % Load
Current G (VIGI)
Current Max Present
Current N
Unity
Hundredths
Thousandths
Unity
IN
Unity
IN_PCT
LDPUValue
MaxIA
Current N % Load
Long Delay Pickup Value
Max Current A
Unity
**
Modulo 10,000 format
Unity
MaxIB
Max Current B
Unity
MaxIC
Max Current C
Unity
MaxIG
Max Current G
Unity
MaxIG_VIGI
MaxIN
Max Current G (VIGI)
Max Current N
Thousandths
Unity
NominalCurrent
ReadyToClose
Circuit Breaker Nominal Current
Circuit Breaker Ready to Close
Unity
Bit 5; ON = yes, OFF = no
Continued on next page
36-EN
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
48049-136-05
Rev. 01, 07/2012
Micrologic™ 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Appendix A—Register List
Table 10:
Register List (continued)
Number of
Registers*
SMS Topic Name User Description
Register* Module*† Units
Scale/Bitmask
TU_BATT_PCT
TU_SN
Trip Unit % Battery
1
4
1
8843
8700
552
PM
%
Unity
Trip Unit Serial Number
Trip Unit Internal Comms Status
PM
ASCII text
TUCommStatus
BCM
Bit 11; ON = not responding, OFF = OK
*
For register entries that are not listed, please refer to the Micrologic device type register list. Contact your local sales office.
BCM = Circuit breaker communication module. CCM = Cradle communication module. PM = Trip unit protection module.
3-register date/time format: register 1: month (byte 1) = 1–12, day (byte 2) = 1–31; register 2: year (byte 1) = 0–199 (add to 1900 to determine the actual year), hour
(byte 2) = 0–23; register 3: minutes (byte 1) = 0–59, seconds (byte 2) = 0–59. Note: Bits 14 and 15 of the month/day register must be masked.
†
‡
**
Modulo 10,000 format: 1 to 4 sequential registers. Each register is Modulo 10,000 (range = –9,999 to +9,999). Result is [R4*10,000^3 + R3*10,000^2 + R2*10,000^1]
+ R1. Range is zero to 9,999,999,999,999,999.
© 1999–2012 Schneider Electric All Rights Reserved
37-EN
Download from Www.Somanuals.com. All Manuals Search And Download.
Micrologic® 2.0A, 3.0A, 5.0A, and 6.0A Electronic Trip Units
Instruction Bulletin
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.
Square D™, Schneider Electric™, Micrologic™, Modbus, and Masterpact™ are trademarks or
registered trademarks of Schneider Electric. Other trademarks used herein are the property of
their respective owners.
Schneider Electric
3700 Sixth St SW
Cedar Rapids, IA 52404 USA
1-888-778-2733
48049-136-05 Rev. 01, 07/2012
Replaces 48049-136-05 ECN 725D, 07/2008
© 1999–2012 Schneider Electric All Rights Reserved
Download from Www.Somanuals.com. All Manuals Search And Download.
|