LXM32
Common DC bus
Application note
MNA01M001EN, V1.01, 08.2014
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Table of contents
LXM32
4
Common DC bus
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LXM32
Safety Information
Safety Information
Read these instructions carefully, and look at the equipment to
become familiar with the device before trying to install, operate, or
maintain it. The following special messages may appear throughout
this documentation or on the equipment to warn of potential hazards
or to call attention to information that clarifies or simplifies a proce-
dure.
The addition of this symbol to a Danger safety label indi-
cates 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.
Hazard categories
Safety instructions to the user are highlighted by safety alert symbols
in the manual. In addition, labels with symbols and/or instructions are
attached to the product that alert you to potential hazards.
Depending on the seriousness of the hazard, the safety instructions
are divided into 4 hazard categories.
DANGER
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury.
WARNING
WARNING indicates a potentially hazardous situation, which, if not
avoided, can result in death, serious injury, or equipment damage.
CAUTION
CAUTION indicates a potentially hazardous situation, which, if not
avoided, can result in injury or equipment damage.
NOTICE
NOTICE indicates a potentially hazardous situation, which, if not
avoided, can result in equipment damage.
Common DC bus
5
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Safety Information
LXM32
Qualification of personnel
Only appropriately trained persons who are familiar with and under-
stand the contents of this manual and all other pertinent product docu-
mentation are authorized to work on and with this product. In addition,
these persons must have received safety training to recognize and
avoid hazards involved. These persons must have sufficient technical
training, knowledge and experience and be able to foresee and detect
potential hazards that may be caused by using the product, by chang-
ing the settings and by the mechanical, electrical and electronic equip-
ment of the entire system in which the product is used.
All persons working on and with the product must be fully familiar with
all applicable standards, directives, and accident prevention regula-
tions when performing such work.
Intended use
The functions described in this document are only intended for use for
the products described in this document.
The product may only be used in compliance with all applicable safety
regulations and directives, the specified requirements and the techni-
cal data.
Prior to using the product, you must perform a risk assessment in view
of the planned application. Based on the results, the appropriate
safety measures must be implemented.
Since the product is used as a component in an entire system, you
must ensure the safety of persons by means of the design of this
entire system (for example, machine design).
Operate the product only with the specified cables and accessories.
Use only genuine accessories and spare parts.
Any use other than the use explicitly permitted is prohibited and can
result in hazards.
Electrical equipment should be installed, operated, serviced, and
maintained only by qualified personnel.
6
Common DC bus
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LXM32
Safety Information
Basic information
DANGER
HAZARD DUE TO ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
•
Only appropriately trained persons who are familiar with and
understand the contents of this manual and all other pertinent
product documentation and who have received safety training to
recognize and avoid hazards involved are authorized to work on
and with this drive system. Installation, adjustment, repair and
maintenance must be performed by qualified personnel.
•
•
The system integrator is responsible for compliance with all local
and national electrical code requirements as well as all other
applicable regulations with respect to grounding of all equipment.
Many components of the product, including the printed circuit
board, operate with mains voltage. Do not touch. Use only electri-
cally insulated tools.
•
•
Do not touch unshielded components or terminals with voltage
present.
The motor itself generates voltage when the motor shaft is rota-
ted. Block the motor shaft to prevent rotation prior to performing
any type of work on the drive system.
•
AC voltage can couple voltage to unused conductors in the motor
cable. Insulate both ends of unused conductors of the motor
cable.
•
•
Do not short across the DC bus terminals or the DC bus capaci-
tors.
Before performing work on the drive system:
-
Disconnect all power, including external control power that
may be present.
-
-
-
Place a "Do Not Turn On" label on all power switches.
Lock all power switches in the open position.
Wait 15 minutes to allow the DC bus capacitors to discharge.
Measure the voltage on the DC bus as per chapter "DC bus
voltage measurement" and verify the voltage is <42 Vdc. The
DC bus LED is not an indicator of the absence of DC bus volt-
age.
•
Install and close all covers before applying voltage.
Failure to follow these instructions will result in death or seri-
ous injury.
Common DC bus
7
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Safety Information
LXM32
WARNING
LOSS OF CONTROL
•
The designer of any control scheme must consider the potential
failure modes of control paths and, for certain critical functions,
provide a means to achieve a safe state during and after a path
failure. Examples of critical control functions are emergency stop,
overtravel stop, power outage and restart.
•
•
Separate or redundant control paths must be provided for critical
functions.
System control paths may include communication links. Consider-
ation must be given to the implication of unanticipated transmis-
sion delays or failures of the link.
•
•
Observe all accident prevention regulations and local safety
guidelines. 1)
Each implementation of the product must be individually and thor-
oughly tested for proper operation before being placed into serv-
ice.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
1) For USA: Additional information, refer to NEMA ICS 1.1 (latest edition), “Safety
Guidelines for the Application, Installation, and Maintenance of Solid State Control”
and to NEMA ICS 7.1 (latest edition), “Safety Standards for Construction and Guide
for Selection, Installation and Operation of Adjustable-Speed Drive Systems”.
8
Common DC bus
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LXM32
Safety Information
DC bus voltage measurement
The DC bus voltage can exceed 800 Vdc. The DC bus LED is not an
indicator of the absence of DC bus voltage.
DANGER
ELECTRIC SHOCK, EXPLOSION OR ARC FLASH
•
•
•
Disconnect the voltage supply to all connections.
Wait 15 minutes to allow the DC bus capacitors to discharge.
Use a properly rated voltage-sensing device for measuring
(>800 Vdc).
•
•
Measure the DC bus voltage between the DC bus terminals (PA/+
and PC/-) to verify that the voltage is less than 42 Vdc.
Contact your local Schneider Electric representative if the DC bus
capacitors do not discharge to less than 42 Vdc within a period of
15 minutes.
•
•
Do not operate the product if the DC bus capacitors do not dis-
charge properly.
Do not attempt to repair the product if the DC bus capacitors do
not discharge properly.
Failure to follow these instructions will result in death or seri-
ous injury.
Standards and terminology
Technical terms, terminology and the corresponding descriptions in
this manual are intended to use the terms or definitions of the perti-
nent standards.
In the area of drive systems, this includes, but is not limited to, terms
such as "safety function", "safe state", "fault", "fault reset", "failure",
"error", "error message", "warning", etc.
Among others, these standards include:
•
IEC 61800 series: "Adjustable speed electrical power drive sys-
tems"
•
IEC 61158 series: "Digital data communications for measurement
and control – Fieldbus for use in industrial control systems"
•
•
IEC 61784 series: "Industrial communication networks – Profiles"
IEC 61508 series: "Functional safety of electrical/electronic/
programmable electronic safety-related systems"
Also see the glossary at the end of this manual.
Common DC bus
9
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Safety Information
LXM32
10
Common DC bus
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LXM32
About the book
About the book
This document describes how several Schneider Electric drives type
LXM32 can share a common DC bus.
This application note replaces application note MNA01D001.
The information provided in this document supplements the manuals.
Before beginning, fully read and understand the manuals of the prod-
ucts used.
Source manuals The latest versions of the manuals can be downloaded from the Inter-
net at:
Work steps If work steps must be performed consecutively, this sequence of steps
is represented as follows:
■
▶
◁
▶
Special prerequisites for the following work steps
Step 1
Specific response to this work step
Step 2
If a response to a work step is indicated, this allows you to verify that
the work step has been performed correctly.
Unless otherwise stated, the individual steps must be performed in the
specified sequence.
Making work easier Information on making work easier is highlighted by this symbol:
Sections highlighted this way provide supplementary information on
making work easier.
SI units Technical data are specified in SI units. Converted units are shown in
parentheses behind the SI unit; they may be rounded.
Example:
Minimum conductor cross section: 1.5 mm2 (AWG 14)
Glossary Explanations of special technical terms and abbreviations.
Index List of keywords with references to the corresponding page numbers.
Common DC bus
11
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About the book
LXM32
12
Common DC bus
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LXM32
1 Introduction
1
Introduction
A drive system requires energy for acceleration or constant movement
that must be supplied to the system.
During deceleration, a motor acts as a generator. A considerable por-
tion of the kinetic energy is re-generated as electrical energy.
Since electrical energy can only be stored to a limited extent in a sin-
gle drive, a drive uses a braking resistor to transform the excess
energy into thermal energy.
Use of electrical energy If an application operates with multiple drive systems, it may be useful
to employ a common DC bus. By sharing a common DC bus, the
energy regenerated by one drive can be supplied to another drive.
Common DC bus Whether or not a common DC bus makes sense depends on the
acceleration and deceleration cycles of the drive systems.
A common DC bus is useful, for example, if one drive systems accel-
erates while another drive system decelerates.
If the drive systems accelerate and decelerate at the same time, a
common DC bus does not make sense.
Common DC bus
13
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1 Introduction
LXM32
1.1
Permissible device types for common DC bus
The DC bus of drives with identical numbers of mains phases can be
connected.
Single-phase drives:
•
LXM32∙∙∙∙M2 with LXM32∙∙∙∙M2
Three-phase drives:
LXM32∙∙∙∙N4 with LXM32∙∙∙∙N4
•
14
Common DC bus
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2 Technical Data
LXM32
2.2
DC bus data
Single-phase drives
LXM32∙...
U45M2
115
163
55
U90M2
115
163
55
D18M2
115
163
55
D30M2
Nominal voltage (1 ∼)
Nominal voltage DC bus
Undervoltage limit
V
V
V
V
V
230
325
130
140
450
0.5
230
325
130
140
450
0.9
230
325
130
140
450
1.6
115
163
55
230
325
130
140
450
2.2
Voltage limit: activation of Quick Stop
Overvoltage limit
60
60
60
60
450
0.2
450
0.4
450
0.8
450
0.8
10.0
Maximum continuous power via DC bus kW
Maximum continuous current via DC bus
A
1.5
1.5
3.2
3.2
6.0
6.0
10.0
Three-phase drives
LXM32∙...
U60N4 D12N4 D18N4 D30N4 D72N4 D85N4 C10N4
Nominal voltage (3 ∼)
Nominal voltage DC bus
Undervoltage limit
V
V
V
V
V
208
294
150
160
820
0.4
208
294
150
160
820
0.8
208
294
150
160
820
1.7
208
294
150
160
820
2.8
208
294
150
160
820
6.5
208
294
150
160
820
7.0
208
294
150
160
820
11.0
40.0
Voltage limit: activation of Quick Stop
Overvoltage limit
Maximum continuous power via DC bus kW
Maximum continuous current via DC bus
A
1.5
3.2
6.0
10.0
22.0
28.0
LXM32∙...
U60N4 D12N4 D18N4 D30N4 D72N4 D85N4 C10N4
Nominal voltage (3 ∼)
Nominal voltage DC bus
Undervoltage limit
V
V
V
V
V
400
566
350
360
820
0.8
400
566
350
360
820
1.6
400
566
350
360
820
3.3
400
566
350
360
820
5.6
400
566
350
360
820
13.0
22.0
400
566
350
360
820
15.0
28.0
400
566
350
360
820
22.0
40.0
Voltage limit: activation of Quick Stop
Overvoltage limit
Maximum continuous power via DC bus kW
Maximum continuous current via DC bus
A
1.5
3.2
6.0
10.0
LXM32∙...
U60N4 D12N4 D18N4 D30N4 D72N4 D85N4 C10N4
Nominal voltage (3 ∼)
Nominal voltage DC bus
Undervoltage limit
V
V
V
V
V
480
679
350
360
820
0.8
480
679
350
360
820
1.6
480
679
350
360
820
3.3
480
679
350
360
820
5.6
480
679
350
360
820
13.0
22.0
480
679
350
360
820
15.0
28.0
480
679
350
360
820
22.0
40.0
Voltage limit: activation of Quick Stop
Overvoltage limit
Maximum continuous power via DC bus kW
Maximum continuous current via DC bus
A
1.5
3.2
6.0
10.0
16
Common DC bus
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LXM32
2.3
2 Technical Data
Braking resistor
LXM32 drives have an internal braking resistor and a connection for
an external braking resistor. If the internal braking resistor is insuffi-
cient for the dynamics of the application, one or more external braking
resistors must be connected.
Single-phase drives
LXM32∙...
U45M2
U90M2
D18M2
D30M2
Ω
Resistance value of internal braking
resistor
94
47
20
10
Continuous power internal braking resis-
tor PPR
W
10
20
40
60
Peak energy ECR
Ws
Ω
82
166
36
330
20
550
10
External braking resistor minimum
External braking resistor maximum 1)
68
Ω
110
200
55
27
16
Maximum continuous power external
braking resistor
W
400
600
800
Capacitance of internal capacitor
μF
390
780
1170
1560
Parameter DCbus_compat = 0 (default value)
Switch-on voltage braking resistor
V
430
30
430
60
430
89
430
119
Energy absorption of internal capacitors Ws
Evar at nominal voltage 115 V +10%
Energy absorption of internal capacitors Ws
Evar at nominal voltage 200 V +10%
17
11
34
22
52
33
69
44
Energy absorption of internal capacitors Ws
Evar at nominal voltage 230 V +10%
Parameter DCbus_compat = 1 (reduced switch-on voltage)
Switch-on voltage braking resistor
V
395
24
395
48
395
73
395
97
Energy absorption of internal capacitors Ws
Evar at nominal voltage 115 V +10%
Energy absorption of internal capacitors Ws
Evar at nominal voltage 200 V +10%
12
5
23
11
35
16
46
22
Energy absorption of internal capacitors Ws
Evar at nominal voltage 230 V +10%
1) The maximum specified braking resistor can derate the peak power of the device. Depending on the application, it is possible to use
a higher ohm resistor.
Common DC bus
17
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2 Technical Data
LXM32
Three-phase drives
LXM32∙...
U60N4 D12N4 D18N4 D30N4 D72N4 D85N4 C10N4
Ω
Resistance value of internal braking resis-
tor
132
60
30
30
10
10
10
Continuous power internal braking resis-
tor PPR
W
20
40
60
100
150
150
150
Peak energy ECR
Ws
Ω
200
70
400
47
600
25
1000
15
2400
8
2400
8
2400
8
External braking resistor minimum
External braking resistor maximum 1)
Ω
145
200
73
50
30
12
11
11
Maximum continuous power external
braking resistor
W
500
800
1500
3000
4500
5500
Capacitance of internal capacitor
Parameter DCbus_compat 2)
Switch-on voltage
μF
110
195
390
560
1120
1230
1230
V
780
28
780
49
780
98
780
141
780
282
780
310
780
310
Energy absorption of internal capacitors Ws
Evar at nominal voltage 208 V +10%
Energy absorption of internal capacitors Ws
Evar at nominal voltage 380 V +10%
14
12
3
25
22
5
50
43
10
73
62
14
145
124
28
159
136
31
159
136
31
Energy absorption of internal capacitors Ws
Evar at nominal voltage 400 V +10%
Energy absorption of internal capacitors Ws
Evar at nominal voltage 480 V +10%
1) The maximum specified braking resistor can derate the peak power of the device. Depending on the application, it is possible to use
a higher ohm resistor.
2) Parameter DCbus_compat has no effect in the case of three-phase devices
18
Common DC bus
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LXM32
2.3.1
2 Technical Data
External braking resistors (accessories)
The resistance values for external braking resistors must not be below
the minimum resistance specified for the drives.
VW3A760...
1Rxx 1) 2Rxx
3Rxx
27
4Rxx 1) 5Rxx
6Rxx
72
7Rxx 1)
72
Ω
W
s
Resistance
10
27
27
72
Continuous power
400
0.72
100
0.552
200
1.08
400
2.64
100
1.44
200
3.72
400
9.6
Maximum time in braking at 115 V /
230 V
Peak power at 115 V / 230 V
kW 18.5
6.8
6.8
6.8
2.6
2.6
2.6
Maximum peak energy at 115 V / 230 V Ws 13300
3800
0.084
7400
0.216
18100
0.504
3700
0.3
9600
0.78
24700
1.92
Maximum time in braking at 400 V /
480 V
s
0.12
Peak power at 400 V / 480 V
kW 60.8
22.5
1900
IP65
22.5
4900
IP65
22.5
8.5
8.5
8.5
Maximum peak energy at 400 V / 480 V Ws 7300
11400
IP65
2500
IP65
6600
IP65
16200
IP65
Degree of protection
UL approval (file no.)
IP65
-
E233422 E233422 -
E233422 E233422 -
1) Resistors with a continuous power of 400 W are not UL/CSA-approved.
VW3A77...
04
05
Ω
W
s
Resistance
15
10
Continuous power
1000
3.5
1000
1.98
Maximum time in braking at 115 V /
230 V
Peak power at 115 V / 230 V
kW 12.3
18.5
Maximum peak energy at 115 V / 230 V Ws 43100
36500
0.37
Maximum time in braking at 400 V /
480 V
s
0.65
Peak power at 400 V / 480 V
kW 40.6
60.8
Maximum peak energy at 400 V / 480 V Ws 26500
22500
IP20
Degree of protection
UL approval (file no.)
IP20
E221095
E221095
Common DC bus
19
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2 Technical Data
LXM32
2.4
Cables for the DC bus
Minimum requirement A cable for the common DC bus must meet the following require-
ments.
Shield:
Shielded at cable lengths of > 0.2 m
Twisted Pair:
Twisted pair at cable lengths of >
0.2 m
Cable:
Two wires, shielded
3 m
Maximum cable length between 2
drives:
Special characteristics:
•
•
Insulation must be rated for the
DC bus voltage
Conductor cross section accord-
ing to the calculated current, but
at least 2* 6 mm2 (2* AWG 10)
The connection of the fuses for the DC bus must be rated for the total
maximum continuous current on the DC bus of all drives connected
via the DC bus. Analyze the most critical case in your application (for
example EMERGENCY STOP) and select an appropriate conductor
cross section.
20
Common DC bus
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LXM32
3 Engineering
3
Engineering
This chapter provides engineering information for a common DC bus
for several drives.
Incorrect use of the DC bus may permanently damage the drives
either immediately or over time.
WARNING
DESTRUCTION OF SYSTEM COMPONENTS AND LOSS OF CONTROL
Verify that all requirements for using the DC bus are met.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
WARNING
DESTRUCTION OF SYSTEM COMPONENTS
•
•
Connect only drives with identical nominal voltages.
Connect single-phase drives only to single-phase drives. Connect
single-phase drives to the same phase.
•
Connect three-phase drives only to three-phase drives.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
LXM32: See the Engineering chapter in the LXM32 product manual
for vital engineering information concerning the LXM32 drive.
Common DC bus
21
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3 Engineering
LXM32
3.1
Energy balance
To be able to estimate the effect of an interconnection of drives via a
common DC bus, create an energy balance of the individual drives
over a movement cycle. A movement cycle typically consists of the fol-
lowing phases: acceleration, continuous movement and deceleration.
The energy generated during deceleration can be used by other
drives connected via a common DC bus. Excess energy can be
absorbed by the braking resistors.
The assessment of the energy balances of the individual drives per
movement cycle and of the cyclic sequence of the movement cycles
allows you to draw a conclusion regarding the efficiency of a common
DC bus.
3.1.1
Energy balance basics
The energy balance is influenced by the following factors:
•
•
•
•
Energy absorption of capacitors Evar in the drive
Electrical losses of the drive system Eel
Mechanical losses of the facility and the drive system Emech
Braking resistor EB
Energy absorption of the capaci- The higher the mains voltage, the lower the energy absorption of the
tors Evar capacitors Evar. In your calculation, use the values for the highest
mains voltage that is used in your application, see chapter
The energy absorption of the capacitors Evar is the square difference
between the voltage prior to the start of the deceleration and the
switch-on voltage of the braking resistor.
Electrical losses Eel The electrical losses Eel of the drive system can be estimated on the
basis of the peak power of the drive. The maximum power dissipation
is approximately 10% of the peak power at a typical efficiency of 90%.
If the current during deceleration is lower, the power dissipation is
reduced accordingly.
Mechanical losses Emech The mechanical losses result from friction during operation of the sys-
tem. Mechanical losses are negligible if the time required by the sys-
tem to coast to a stop without a driving force is considerably longer
than the time required to decelerate the system. The mechanical los-
ses can be calculated from the load torque and the velocity from
which the motor is to stop.
Braking resistor EB Two characteristic values determine the energy absorption of a brak-
ing resistor:
•
The continuous power PPR is the amount of energy that can be
continuously absorbed without overloading the braking resistor.
•
The maximum energy ECR limits the maximum short-term power
that can be absorbed.
22
Common DC bus
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LXM32
3 Engineering
Rating
D
i
v
t
t
I
Figure 1: Movement cycle: Profile for energy assessment
This profile with velocity (v) and motor current (I) is also used for rating
the motor and the braking resistor. The deceleration segment to be
considered is labeled Di.
Calculation of the energy at constant deceleration:
The total inertia (Jt) must be known.
Jt with:
Jt = Jm + Jc
Jm: Motor inertia with or without holding brake
Jc: Load inertia
The energy for each deceleration segment is calculated as follows:
2
2πni
1
2
1
2
Ei =
Jt ωi2
=
Jt
60
Units: Ei in Ws (wattseconds), Jt in kgm2, ω in rad and ni in min-1.
See the technical data for the energy absorption Evar of the devices
(without consideration of an internal or external braking resistor).
In the next calculation steps, only consider those segments Di, whose
energy Ei exceeds the energy absorption of the device (see chapter
means of the braking resistor (internal or external).
EDi is calculated using the following formula:
EDi = Ei - Evar (in Ws)
The continuous power Pc is calculated for each machine cycle:
Common DC bus
23
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3 Engineering
LXM32
EDi
Σ
Pc =
Cycletime
Units: Pc in W, EDi in Ws and cycle time T in s
These calculations allow you to select the required braking resistor.
3.2
3.3
Electromagnetic compatibility (EMC)
If drives are to be operated via a common DC bus, the following
aspects must be considered in terms of EMC:
•
•
Keep DC bus cables as short as possible.
Shielded DC bus cables must be used at a cable length of > 0.2 m.
In the case of shielded DC bus cables, connect the cable shield to
the shield connection (large surface area contact).
DC bus connection
The DC bus is connected by means of a plug and socket connection
or screw terminals.
See the manual of the respective product for tightening torque of the
screw terminals.
fications. Connector kits and pre-assembled cables can be found in
24
Common DC bus
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LXM32
3.4
3 Engineering
Fuses
The number of mains fuses depends on the input current of all drives
connected via the common DC bus.
Choose fuse ratings as low as possible according to the power of the
drive as well as the conductor cross section.
See manual of the respective product for more information.
The maximum permissible fuse ratings must not be exceeded.
3.4.1
DC bus connection of single-phase drives
Single mains fuse A single mains fuse is sufficient if the total input current of all drives
connected via the common DC bus is less than the maximum fuse rat-
ing shown in the table below.
Single mains fuse
Maximum fuse rating
LXM32∙∙∙∙M2
A
25
L1
N/L2
N/L2 L1
N/L2 L1
N/L2 L1
PC/- PA/+
PC/- PA/+
PC/- PA/+
DC+
-
DC
Figure 2: Single mains fuse for single-phase drives
Common DC bus
25
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LXM32
Multiple mains fuses Multiple mains fuses are required if the total input current of all drives
connected via the common DC bus exceeds the maximum fuse rating
shown in the table below.
Multiple mains fuses
Maximum fuse rating
LXM32∙∙∙∙M2
A
25
If multiple mains fuses are required, additional DC bus fuses must be
used upstream of each drive. The DC bus fuses must be suitable for
600 Vdc.
DC bus fuses
Maximum fuse rating
LXM32∙∙∙∙M2
A
25
L1
N/L2
N/L2 L1
N/L2 L1
N/L2 L1
PC/- PA/+
PC/- PA/+
PC/- PA/+
DC+
-
DC
Figure 3: Multiple mains fuses for single-phase drives
See chapter "6.2 DC fuses" for fuses for the DC bus.
The use of mains reactors can reduce the input current. Due to the
lower input current, it may be possible to operate the drives with just a
single mains fuse.
26
Common DC bus
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LXM32
3.4.2
3 Engineering
DC bus connection of three-phase drives
Single mains fuse A single fuse is sufficient if the total input current of all drives connec-
ted via the common DC bus is less than the maximum fuse rating
shown in the table below.
Single mains fuse
Maximum fuse rating
LXM32∙U60N4, LXM32∙D12N4,
LXM32∙D18N4, LXM32∙D30N4,
LXM32∙D72N4
A
A
32
LXM32∙D85N4, LXM32∙C10N4
63
L1
L2
L3
L3 L2 L1
L3 L2 L1
L3 L2 L1
PC/- PA/+
PC/- PA/+
PC/- PA/+
DC+
-
DC
Figure 4: Single mains fuse for three-phase drives
Common DC bus
27
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LXM32
Multiple mains fuses Multiple mains fuses are required A single fuse is sufficient if the total
input current of all drives connected via the common DC bus is less
than the maximum fuse rating shown in the table below.
Multiple mains fuses
Maximum fuse rating
LXM32∙U60N4, LXM32∙D12N4,
LXM32∙D18N4, LXM32∙D30N4,
LXM32∙D72N4
A
A
32
LXM32∙D85N4, LXM32∙C10N4
63
If multiple mains fuses are required, additional DC bus fuses must be
used upstream of each drive. The DC bus fuses must be suitable for
600 Vdc.
DC bus fuses
Maximum fuse rating
LXM32∙U60N4, LXM32∙D12N4,
LXM32∙D18N4, LXM32∙D30N4,
LXM32∙D72N4
A
A
32
LXM32∙D85N4, LXM32∙C10N4
63
L1
L2
L3
L3 L2 L1
L3 L2 L1
L3 L2 L1
PC/- PA/+
PC/- PA/+
PC/- PA/+
DC+
-
DC
Figure 5: Multiple mains fuses for three-phase drives
The use of mains reactors can reduce the input current. Due to the
lower input current, it may be possible to operate the drives with just a
single mains fuse.
28
Common DC bus
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LXM32
3.4.3
3 Engineering
Supply via the DC bus
A single or multiple drives can be supplied directly via the DC bus.
The supply is provided by a correspondingly sized drive or by a DC
power supply unit.
In the case of supply via the DC bus, DC bus fuses must be used. The
DC bus fuses must be suitable for 600 Vdc.
The number of DC bus fuses depends on the total maximum continu-
ous current on the DC bus of all drives connected via the common DC
bus.
Single-phase drives
Three-phase drives
DC bus fuses
Maximum fuse rating
LXM32∙∙∙∙M2
A
25
DC bus fuses
Maximum fuse rating
LXM32∙U60N4, LXM32∙D12N4,
LXM32∙D18N4, LXM32∙D30N4,
LXM32∙D72N4
A
A
32
LXM32∙D85N4, LXM32∙C10N4
63
Common DC bus
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LXM32
Single DC bus fuse If the total maximum continuous current on the DC bus of all drives
connected via the common DC bus does not exceed the maximum
fuse rating of a drive, a single DC bus fuse is sufficient.
L1
L2
L3
L3 L2 L1
L3 L2 L1
L3 L2 L1
L3 L2 L1
PC/- PA/+
PC/- PA/+
PC/- PA/+
PC/- PA/+
Figure 6: Supply via the DC bus by a drive
L1
L2
L3
L3 L2 L1
L3 L2 L1
L3 L2 L1
~
-
+
PC/- PA/+
PC/- PA/+
PC/- PA/+
Figure 7: Supply via the DC bus by a DC power supply unit
30
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3 Engineering
Multiple DC bus fuses If the total maximum continuous current on the DC bus of all drives
connected via the common DC bus exceeds the maximum fuse rating
of a drive, DC bus fuses are required at each drive.
L1
L2
L3
L3 L2 L1
L3 L2 L1
L3 L2 L1
L3 L2 L1
PC/- PA/+
PC/- PA/+
PC/- PA/+
PC/- PA/+
Figure 8: Supply via the DC bus by a drive
L1
L2
L3
L3 L2 L1
L3 L2 L1
L3 L2 L1
~
-
+
PC/- PA/+
PC/- PA/+
PC/- PA/+
Figure 9: Supply via the DC bus by a DC power supply unit
Common DC bus
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LXM32
3.5
Braking resistors
Excess energy in the common DC bus must be absorbed by the brak-
ing resistors. Depending on the application, one or more braking resis-
tors can be connected. Consider the internal braking resistors of
LXM32 drives in your calculations.
If drives with a different nominal power are connected via the DC bus,
you must connect braking resistors to the drive with the highest nomi-
nal power. See the manual of the respective product for more informa-
tion.
3.5.1
Rating the braking resistor
An insufficiently rated braking resistor can cause overvoltage on the
DC bus. Overvoltage on the DC bus causes the power stage to be
disabled. The motor is no longer actively decelerated.
WARNING
MOTOR WITHOUT BRAKING EFFECT
•
•
Verify that the braking resistor has a sufficient rating.
Verify that the parameter settings for the braking resistor are cor-
rect.
•
•
Verify that the I2t value for temperature monitoring does not
exceed 100% by performing a test run under maximum load con-
ditions.
Verify that the calculations and the test run take into account the
fact that the DC bus capacitors can absorb less braking energy at
higher mains voltages.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
The temperature of the braking resistor may exceed 250 °C (482 °F)
during operation.
WARNING
HOT SURFACES
•
•
Ensure that any contact with a hot braking resistor is avoided.
Do not allow flammable or heat-sensitive parts in the immediate
vicinity of the braking resistor.
•
Verify that the heat dissipation is sufficient by performing a test
run under maximum load conditions.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
Braking resistors are required for dynamic applications. During decel-
eration, the kinetic energy is transformed into electrical energy in the
motor. The electrical energy increases the DC bus voltage. The brak-
ing resistor is activated when the defined threshold value is exceeded.
The braking resistor transforms electrical energy into heat. If highly
dynamic deceleration is required, the braking resistor must be well
adapted to the system.
32
Common DC bus
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LXM32
3 Engineering
Further information on the subject
Page
Commissioning chapter
See also chapter "3.1 Energy balance", page 22 for rating information.
Internal braking resistor A braking resistor to absorb braking energy is integrated in LXM32
drives. The device is shipped with the internal braking resistor active.
If the braking energy of all drives sharing a common DC bus is greater
than the energy the internal braking resistors can absorb, you must
use an external braking resistor. Consider the most extreme case of
your application in calculating the braking energy.
Example: In the case of an EMERGENCY STOP, all drives decelerate
simultaneously; the braking resistors must be able to absorb the entire
braking energy.
External braking resistor An external braking resistor is required in applications in which the
braking energy is greater than the energy that can be absorbed by the
drives sharing a common DC bus. Consider the most extreme case of
your application in calculating the braking energy.
Example: In the case of an EMERGENCY STOP, all drives decelerate
simultaneously; the braking resistors must be able to absorb the entire
braking energy.
LXM32: Monitoring LXM32 drives monitor the load on the connected braking resistor. The
load on the braking resistor can be read out.
The connection of the external braking resistor is short-circuit protec-
ted. A ground fault of the braking resistor is not detected.
Selection of the external braking The rating of an external braking resistor depends on the required
resistor peak power and continuous power with which the braking resistor can
be operated.
The resistance R is derived from the required peak power and the DC
bus voltage.
2
U
R =
P
max
R = Resistance value in Ω
U = Switch-on voltage braking resistor in V
Pmax = Required peak power in W
If 2 or more braking resistors are connected to one drive, note the fol-
lowing criteria:
•
The braking resistors must be connected in parallel or in series so
the required resistance is reached. Only connect resistors with
identical resistance in parallel in order to evenly distribute the load
to all braking resistors.
•
•
The total resistance of all external braking resistors connected to
one drive must not fall below a lower limit.
The continuous power of the network of connected braking resis-
tors must be calculated. The result must be greater than or equal
to the actually required continuous power.
Common DC bus
33
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LXM32
Use only resistors that are specified as braking resistors. See chapter
Connection of braking resistor Braking resistors with degree of protection IP65 may be installed out-
side the control cabinet in an appropriate environment in order to
decrease the temperature in the control cabinet.
The external braking resistors listed in the Accessories chapter are
shipped with an information sheet that provides details on installation.
Further procedure:
•
•
Connect the braking resistors to the drive.
LXM32: Check the parameter RESint_ext during commissioning.
This parameter allows you to switch between internal and external
braking resistor.
•
•
LXM32: If you have connected an external braking resistor to an
LXM32 drive, you must set the parameters for the external braking
resistor during commissioning.
During commissioning, test the braking resistors under realistic
Wire ferrules: If you use wire ferrules, use only wire ferrules with col-
lars for these terminals.
3.5.2
Rating information
To rate the braking resistor, calculate the proportion contributing to
absorbing braking energy.
An external braking resistor is required if the kinetic energy that must
be absorbed exceeds the total of the internal proportions, including
the internal braking resistor.
The energy Evar is the square difference between the voltage before
the deceleration process and the response threshold.
The voltage prior to the deceleration process depends on the mains
voltage. The energy absorption by the DC bus capacitors is lowest
when the mains voltage is highest. In the calculation, use the values
for the highest mains voltage.
Energy absorption braking resistor Two characteristic values determine the energy absorption of the
braking resistor:
•
The continuous power PPR is the amount of energy that can be
continuously absorbed without overloading the braking resistor.
•
The maximum energy ECR limits the maximum short-term power
that can be absorbed.
If the continuous power was exceeded for a specific time, the braking
resistor must remain without load for a corresponding period.
The characteristic values PPR and ECR of the internal braking resistor
cal losses.
Example: LXM32 drive Deceleration of a rotary motor with the following data:
34
Common DC bus
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LXM32
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•
•
•
Initial speed of rotation: n = 4000 min-1
Rotor inertia: JR = 4 kgcm2
Load inertia: JL = 6 kgcm2
Calculation of the energy to be absorbed:
EB = 1/2 * J * (2*π*n * 1/60)2
to 88 Ws
Electrical and mechanical losses are ignored.
In this example, the DC bus capacitors absorb 23 Ws (the value
The internal braking resistor must absorb the remaining 65 Ws. It can
absorb a pulse of 80 Ws. If the load is decelerated once, the internal
braking resistor is sufficient.
If the deceleration process is repeated cyclically, the continuous out-
put must be considered. If the cycle time is longer than the ratio of the
energy to be absorbed EB and the continuous power PPR, the internal
braking resistor is sufficient. If the system decelerates more frequently,
the internal braking resistor is not sufficient.
In the example, the ratio EB/PPR is 1.3 s. If the cycle time is shorter, an
external braking resistor is required.
Selecting an external braking The selection is made in two steps:
resistor
•
The maximum energy during deceleration must be less than the
peak energy that the internal braking resistor can absorb:
(EDi)<(ECr). In addition, the continuous power of the internal braking
resistor must not be exceeded: (PC)<(PPr). If these conditions are
met, then the internal braking resistor is sufficient.
•
If one of the conditions is not met, you must use an external brak-
ing resistor. The braking resistor must be rated in such a way that
the conditions are met. The resistance of the braking resistor must
be between the specified minimum and maximum values, since
otherwise the load can no longer be decelerated or the product
might be destroyed.
See chapter "2.3 Braking resistor", page 17 for technical data on the
external braking resistors.
Common DC bus
35
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3 Engineering
LXM32
3.6
Mains reactor
A mains reactor is required if at least one of the following criteria is
met:
•
•
The output power of the drive is to be increased.
The short-circuit current rating (SCCR) of the supplying mains is
greater than specified for the drives.
•
Current harmonics are to be reduced.
If one drive requires a mains reactor, then all drives connected via the
DC bus must be equipped with mains reactors.
The mains reactor for several drives with a common AC fuse must be
rated in such a way that the nominal current of the mains reactor is
greater than the total of the input current of the drives.
The fuse rating of the fuse upstream of the mains reactor must not be
greater than the nominal current of the mains reactor.
L1
L2
L3
E1
E2
E3
S1
S2
S3
L3 L2 L1
L3 L2 L1
PC/- PA/+
PC/- PA/+
DC+
-
DC
Figure 10: Wiring of drives with common AC fuse and a mains reactor, exam-
ple shows three-phase drives.
36
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LXM32
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L1
N/L2
E1
E2
S1
S2
E1
E2
S1
S2
N/L2 L1
N/L2 L1
PC/- PA/+
PC/- PA/+
DC+
-
DC
Figure 11: Wiring of drives with individual AC fuses and mains reactors, example shows singe-phase drives.
See the manual of the respective product for information on mains
reactors.
Common DC bus
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LXM32
3.7
Mains filter
The emission depends on the length of the motor cables. If the
required limit value is not reached with the internal mains filter, you
must use an external mains filter.
See manual of the respective product for information on mains filters.
The mains filter for several drives with a common AC fuse must be
rated in such a way that the nominal current of the external mains filter
is greater than the total of the input current of the drives.
The fuse rating of the fuse upstream of the external mains filter must
not be greater than the nominal current of the external mains filter.
Mount the external mains filter in such a way that the lines from the
mains filter to the drives are as short as possible. For EMC reasons,
route the cables from the mains filter to the drives separately from the
line to the mains filter.
External three-phase mains filters do not have a neutral conductor
connection; they are only approved for three-phase devices.
L1
L2
L3
L1
L2
L3
L1'
L2'
L3'
L3 L2 L1
L3 L2 L1
PC/- PA/+
PC/- PA/+
DC+
-
DC
Figure 12: Wiring of an external mains filter, example shows three-phase
drives.
See the manual of the respective product for information on external
mains filters.
38
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LXM32
3.8
3 Engineering
Mains reactor and external mains filter
If a mains reactor and an external mains filter are required, the mains
reactor and external mains filter must be arranged according to the
following illustrations for EMC reasons.
L1
L2
L3
L1
L2
L3
L1'
L2'
L3'
E1
E2
E3
S1
S2
S3
L3 L2 L1
L3 L2 L1
L3 L2 L1
PC/- PA/+
PC/- PA/+
PC/- PA/+
DC+
-
DC
Figure 13: Wiring of drives with common mains fuse, mains reactor and mains filter, example shows three-phase drives.
Common DC bus
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LXM32
40
Common DC bus
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LXM32
4 Installation
4
Installation
An engineering phase is mandatory prior to mechanical and electrical
information.
Incorrect use of the DC bus may permanently damage the drives
either immediately or over time.
WARNING
DESTRUCTION OF SYSTEM COMPONENTS AND LOSS OF CONTROL
Verify that all requirements for using the DC bus are met.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
WARNING
DESTRUCTION OF SYSTEM COMPONENTS
•
•
Connect only drives with identical nominal voltages.
Connect single-phase drives only to single-phase drives. Connect
single-phase drives to the same phase.
•
Connect three-phase drives only to three-phase drives.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
NOTICE
DESTRUCTION DUE TO INCORRECT OPERATION
Verify that the power stage supplies of the drives connected via a
common DC bus are switched on simultaneously.
Failure to follow these instructions can result in equipment
damage.
Common DC bus
41
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4 Installation
LXM32
L1
L2
L3
N
L1
N/L2
L1
N/L2
L1
L2
L3
N
M2
M2
M2
M2
L1
L2
L3
N
L1
L2
L3
L1
L2
L3
L1
L2
L3
N
N4
N4
M2
N4
Figure 14: Specifications for drives with mains supply
4.1
Assembling cables
Pre-assembled cables are available for common DC bus. If the pre-
assembled cables do not have the required length, use cables and
Properties of the DC bus cable Note the DC bus cable properties, see chapter
Assembling DC bus cables The following instructions apply to drives with plug connections for the
DC bus.
42
Common DC bus
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LXM32
4 Installation
A
1
2
C
3
B
4
5
Part
Length in mm (inches)
A
Cable jacket
130 (5.2)
60 (2.5)
B
C
Length of shield connection
Stripping length
6 (0.25)
Diameter ring-type cable lug /
fork-type cable lug
For M5 screw
▶
(1) Strip the cable jacket, length A.
▶
(2) Slide back the shield braiding. Open the shield braiding and
twist it to form a shield connection wire.
▶
(3) Shorten the twisted shield connection wire to length B and insu-
late the shield braiding with heat shrink tube.
Crimp the crimp contacts to the two stripped conductors. The strip-
for information on the crimping tool.
▶
▶
(4) Crimp a fork-type cable lug to the shield connection wire.
Push the crimp contacts into the connector housing. Polarity: the
red wire is PA/+, the black wire is PC/-.
(5) Secure the shield with heat shrink tube.
Common DC bus
43
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4 Installation
LXM32
The following instructions apply to drives with screw terminals for the
DC bus.
A
1
2
B
C
3
LXM32∙...
D85, C10
mm (in) 220 (8.66)
mm (in) 50 (1.97)
mm (in) 18 (0.71)
A
B
C
(1)
(2)
(3)
Strip the cable jacket, length A.
Slide the shield braiding back over the cable jacket.
Secure the shield braiding with a heat shrink tube. The
shield must have at least length D. Verify that a large surface
area of the shield braiding is connected to the EMC shield
clamp.
44
Common DC bus
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LXM32
4.2
4 Installation
Wiring the DC bus
NOTICE
EQUIPMENT DAMAGE CAUSED BY INCORRECT POLARITY
Verify correct polarity during installation.
Failure to follow these instructions can result in equipment
damage.
The DC bus is connected by means of a plug and socket connection
or screw terminals.
fications. Pre-assembled cables and connector kits can be found in
4.2.1
Drives with connectors
Connector coding The connectors are coded. If you do not use pre-assembled cables,
verify that the crimp contacts properly snap into the connector. Verify
that PA/+ is connected to PA/+ and PC/- is connected to PC/-. Incor-
rect wiring will destroy the devices.
PA/+
PC/-
Figure 15: Connector coding
Connector lock The connector has a snap lock mechanism. Pull the connector hous-
ing to unlock the connector.
Both wires in the connector housing must be able to move independ-
ently for unlocking.
If you want to remove the DC bus connection cable, you must open
the connector lock by pulling at the housing.
The connection cable is easier to remove if you remove the motor
connector first.
Common DC bus
45
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4 Installation
LXM32
Figure 16: Unlocking the DC bus connector, step 1: Push cables towards con-
nector.
Figure 17: Unlocking the DC bus connector, step 2: Push cables towards con-
nector, at the same time remove the connector with the other hand.
If the two wires cannot move freely, the DC bus connector will not
unlock.
▶
▶
Push the two wires towards the connector (see Figure 16).
While pushing the wires towards the connector, pull the connector
at the connector housing with the other hand.The connector is
unlocked and you can remove the DC bus connection cable (see ).
The connector is unlocked and you can remove the DC bus con-
nection cable (see Figure 17).
46
Common DC bus
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LXM32
4.2.2
4 Installation
Drives with terminals
This chapter describes LXM32 drives with screw terminals.
Properties of the connection termi-
nals CN9
LXM32∙...
D85, C10
Connection cross section
mm2
6 ... 25
(AWG)
(10 ... 4)
Tightening torque for terminal
screws
Nm
(lb.in)
3.8
(33.6)
Stripping length
mm
(in)
18
(0.71)
The terminals are approved for fine wire conductors and rigid conduc-
tors. Observe the maximum permissible connection cross section.
Take into account the fact that wire ferrules increase the conductor
cross section.
Wiring diagram
CN9
L1/R L2/S L3/T
PA/+ PB PC/- U/T1 V/T2 W/T3
BR-
BR+
Figure 18: Wiring diagram DC bus
▶
▶
Connecting the DC bus
Switch off all supply voltages. Observe the safety instructions con-
cerning electrical installation.
Connect the DC bus to the device. Connect PA/+ to PA/+ (red) and
PC/- to PC/- (black). Note the tightening torque specified for the
terminal screws.
▶
▶
Connect the cable shield with a shield clamp to an EMC rail (large
surface area contact).
Verify that the individual wires are in the individual guides.
Mount the cable guide.
Common DC bus
47
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4 Installation
LXM32
4.2.3
Connecting the DC bus
ESC
Figure 19: DC bus connection, example with connector
▶
▶
▶
Verify that the requirements concerning the DC bus are met, see
Use pre-assembled cables whenever possible (page 55) to reduce
the risk of wiring errors.
Only connect the devices with the specified accessories. The con-
nectors are coded. Connect PA/+ to PA/+ (red) and PC/- to PC/-
(black).
48
Common DC bus
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LXM32
4.3
4 Installation
Verifying installation
▶
▶
▶
▶
▶
Verify that the wiring complies with the specifications as per chap-
Verify that the fuses used do not exceed the maximum permissible
fuse rating.
Verify that PA/+ is only connected to PA/+ and that PC/- is only
connected to PC/-.
Verify that the shield is connected to a large surface area if you use
shielded DC bus cables.
Verify that the connector locks are properly snapped in.
Common DC bus
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4 Installation
LXM32
50
Common DC bus
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LXM32
5 Commissioning
5
Commissioning
For commissioning, follow the commissioning instructions for the indi-
vidual devices in the manual of the respective product.
Incorrect use of the DC bus may permanently damage the drives
either immediately or over time.
WARNING
DESTRUCTION OF SYSTEM COMPONENTS AND LOSS OF CONTROL
Verify that all requirements for using the DC bus are met.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
NOTICE
DESTRUCTION DUE TO INCORRECT OPERATION
Verify that the drives connected via a common DC bus are switched
on simultaneously.
Failure to follow these instructions can result in equipment
damage.
Common DC bus
51
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5 Commissioning
LXM32
5.1
Commissioning procedure
5.1.1
DC bus connection LXM32 to LXM32
Commissioning steps:
▶
Verify proper installation of the drives and the connections for the
▶
▶
Switch on the controller supply for all devices.
Set the parameters for the braking resistors, see chapter
▶
Commission the drives, see the descriptions in the manuals for the
individual products.
52
Common DC bus
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LXM32
5.1.2
5 Commissioning
Supply via the DC bus
Commissioning steps:
▶
Verify proper installation of the drives and the connections for the
▶
▶
Switch on the controller supply for all devices.
LXM32: Set the parameter MON_MainsVolt to "DC-Bus Only" for
LXM32.
Parameters
MON_MainsVolt
Value
DC-Bus Only
▶
▶
LXM32: Set the parameters for the braking resistors of LXM32
drives, see chapter
Commission the drives, see the descriptions in the manuals for the
individual products.
Common DC bus
53
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5 Commissioning
LXM32
5.2
LXM32: Setting the braking resistor parameters
An insufficiently rated braking resistor can cause overvoltage on the
DC bus. Overvoltage on the DC bus causes the power stage to be
disabled. The motor is no longer actively decelerated.
WARNING
MOTOR WITHOUT BRAKING EFFECT
•
•
Verify that the braking resistor has a sufficient rating.
Verify that the parameter settings for the braking resistor are cor-
rect.
•
•
Verify that the I2t value for temperature monitoring does not
exceed 100% by performing a test run under maximum load con-
ditions.
Verify that the calculations and the test run take into account the
fact that the DC bus capacitors can absorb less braking energy at
higher mains voltages.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
The temperature of the braking resistor may exceed 250 °C (482 °F)
during operation.
WARNING
HOT SURFACES
•
•
Ensure that any contact with a hot braking resistor is avoided.
Do not allow flammable or heat-sensitive parts in the immediate
vicinity of the braking resistor.
•
Verify that the heat dissipation is sufficient by performing a test
run under maximum load conditions.
Failure to follow these instructions can result in death, serious
injury, or equipment damage.
▶
Check the parameter RESint_ext. If you have connected an
external braking resistor, you must set the parameter to "external".
▶
If you have connected an external braking resistor, (value of the
parameter RESint_ext is set to "external"), you must assign the
appropriate values to the parameters RESext_P, RESext_R and
RESext_ton. Verify that the selected external braking resistor is
really connected.
▶
Test the function of the braking resistor under realistic, worst case
conditions.
If the regenerated power becomes greater than the power that can be
absorbed by the braking resistor, an error message is generated and
the power stage is disabled.
See the product manual for a description of the parameters.
54
Common DC bus
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LXM32
6 Accessories and spare parts
6
Accessories and spare parts
6.1
DC bus accessories
Description
Order no.
DC bus connection cable, 2 * 6 mm2 (2 * AWG 10), pre-assembled, 0.1 m, 5 pieces
DC bus connection cable, 2 * 6 mm2 (2 * AWG 10), Twisted Pair, shielded, 15 m
VW3M7101R01
VW3M7102R150
VW3M2207
DC bus connector kit, connector housing and crimp contacts for 3 ... 6 mm2 (AWG 12 ... 10),
10 pieces
A crimping tool is required for the crimp contacts of the connector kit.
Manufacturer:
Tyco Electronics, Heavy Head Hand Tool, Tool Pt. No 180250
6.2
DC fuses
The following DC fuses are offered by SIBA.
Description
SIBA order no.
5020106.10
5020106.16
5020106.25
5020106.32
5020106.40
5020106.50
5020106.63
DC fuse, DC 700V 10A
DC fuse, DC 700V 16A
DC fuse, DC 700V 25A
DC fuse, DC 700V 32A
DC fuse, DC 700V 40A
DC fuse, DC 700V 50A
DC fuse, DC 700V 63A
Common DC bus
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6 Accessories and spare parts
LXM32
6.3
External braking resistors
Description
Order no.
Braking resistor IP65; 10 Ω; maximum continuous power 400 W; 0.75 m connection cable
VW3A7601R07
VW3A7601R20
VW3A7601R30
VW3A7602R07
VW3A7602R20
VW3A7602R30
VW3A7603R07
VW3A7603R20
VW3A7603R30
VW3A7604R07
VW3A7604R20
VW3A7604R30
VW3A7605R07
VW3A7605R20
VW3A7605R30
VW3A7606R07
VW3A7606R20
VW3A7606R30
(2.1 mm2), UL
Braking resistor IP65; 10 Ω; maximum continuous power 400 W; 2 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 10 Ω; maximum continuous power 400 W; 3 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 27 Ω; maximum continuous power 100 W; 0.75 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 27 Ω; maximum continuous power 100 W; 2 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 27 Ω; maximum continuous power 100 W; 3 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 27 Ω; maximum continuous power 200 W; 0.75 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 27 Ω; maximum continuous power 200 W; 2 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 27 Ω; maximum continuous power 200 W; 3 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 27 Ω; maximum continuous power 400 W; 0.75 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 27 Ω; maximum continuous power 400 W; 2 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 27 Ω; maximum continuous power 400 W; 3 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 72 Ω; maximum continuous power 100 W; 0.75 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 72 Ω; maximum continuous power 100 W; 2 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 72 Ω; maximum continuous power 100 W; 3 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 72 Ω; maximum continuous power 200 W; 0.75 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 72 Ω; maximum continuous power 200 W; 2 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 72 Ω; maximum continuous power 200 W; 3 m connection cable
(2.1 mm2), UL
Braking resistor IP65; 72 Ω; maximum continuous power 400 W; 0.75 m connection cable
Braking resistor IP65; 72 Ω; maximum continuous power 400 W; 2 m connection cable
Braking resistor IP65; 72 Ω; maximum continuous power 400 W; 3 m connection cable
Braking resistor IP65; 100 Ω; maximum continuous power 100 W; 0.75 m connection cable
Braking resistor IP65; 100 Ω; maximum continuous power 100 W; 2 m connection cable
Braking resistor IP65; 100 Ω; maximum continuous power 100 W; 3 m connection cable
Braking resistor IP20; 15 Ω; maximum continuous power 1000 W; M6 terminals, UL
Braking resistor IP20; 10 Ω; maximum continuous power 1000 W; M6 terminals, UL
VW3A7607R07
VW3A7607R20
VW3A7607R30
VW3A7608R07
VW3A7608R20
VW3A7608R30
VW3A7704
VW3A7705
56
Common DC bus
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LXM32
Glossary
Glossary
Units and conversion tables
The value in the specified unit (left column) is calculated for the
desired unit (top row) with the formula (in the field).
Example: conversion of 5 meters (m) to yards (yd)
5 m / 0.9144 = 5.468 yd
Length
in
ft
yd
m
cm
mm
in
-
/ 12
/ 36
* 0.0254
* 0.30479
* 0.9144
-
* 2.54
* 30.479
* 91.44
* 100
-
* 25.4
* 304.79
* 914.4
* 1000
* 10
ft
* 12
* 36
/ 0.0254
/ 2.54
/ 25.4
-
/ 3
yd
m
* 3
-
/ 0.30479
/ 30.479
/ 304.79
/ 0.9144
/ 91.44
/ 914.4
cm
mm
/ 100
/ 1000
/ 10
-
Mass
lb
-
oz
* 16
-
slug
kg
g
lb
* 0.03108095
* 1.942559*10-3
-
* 0.4535924
* 0.02834952
* 14.5939
-
* 453.5924
* 28.34952
* 14593.9
* 1000
oz
slug
kg
g
/ 16
/ 0.03108095
/ 1.942559*10-3
/ 0.45359237
/ 453.59237
/ 0.02834952
/ 28.34952
/ 14.5939
/ 14593.9
/ 1000
-
Force
lb
oz
* 16
-
p
N
lb
oz
p
-
* 453.55358
* 4.448222
* 0.27801
* 9.807*10-3
-
/ 16
* 28.349524
-
/ 453.55358
/ 4.448222
/ 28.349524
/ 0.27801
N
/ 9.807*10-3
Power
HP
-
W
HP
W
* 746
-
/ 746
Common DC bus
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Glossary
LXM32
Rotation
min-1 (RPM)
min-1 (RPM) -
rad/s
* π / 30
-
deg./s
* 6
rad/s
* 30 / π
* 57.295
-
deg./s
/ 6
/ 57.295
Torque
lb‧in
-
lb‧ft
/ 12
oz‧in
* 16
* 192
-
Nm
kp‧m
* 0.011521
kp‧cm
* 1.1521
dyne‧cm
lb‧in
lb‧ft
oz‧in
Nm
* 0.112985
* 1.355822
* 1.129*106
* 12
/ 16
-
* 0.138255
* 13.8255
* 13.558*106
/ 192
* 7.0616*10-3 * 720.07*10-6 * 72.007*10-3 * 70615.5
/ 0.112985
/ 1.355822
/ 0.138255
/ 13.8255
/ 7.0616*10-3
-
* 0.101972
* 10.1972
* 10*106
* 98.066*106
* 0.9806*106
-
kp‧m
kp‧cm
dyne‧cm
/ 0.011521
/ 1.1521
/ 720.07*10-6 / 0.101972
/ 72.007*10-3 / 10.1972
-
* 100
-
/ 100
/ 1.129*106
/ 13.558*106 / 70615.5
/ 10*106
/ 98.066*106 / 0.9806*106
Moment of inertia
lb‧in2
-
lb‧ft2
/ 144
kg‧m2
kg‧cm2
kp‧cm‧s2
oz‧in2
* 16
lb‧in2
/ 3417.16
* 0.04214
-
/ 0.341716
* 421.4
* 10*103
-
/ 335.109
* 0.429711
* 10.1972
/ 980.665
-
lb‧ft2
* 144
-
* 2304
* 54674
* 5.46
* 5361.74
-
kg‧m2
kg‧cm2
kp‧cm‧s2
oz‧in2
* 3417.16
* 0.341716
* 335.109
/ 16
/ 0.04214
/ 421.4
/ 0.429711
/ 2304
/ 10*103
/ 10.1972
/ 54674
* 980.665
/ 5.46
/ 5361.74
Temperature
°F
°C
K
°F
°C
K
-
(°F - 32) * 5/9
(°F - 32) * 5/9 + 273.15
°C * 9/5 + 32
-
°C + 273.15
-
(K - 273.15) * 9/5 + 32
K - 273.15
Conductor cross section
AWG
mm2
1
2
3
4
5
6
7
8
9
10
11
12
13
42.4
33.6
26.7
21.2
16.8
13.3
10.5
8.4
6.6
5.3
4.2
3.3
2.6
AWG
mm2
14
15
16
17
18
19
20
21
22
23
24
25
26
2.1
1.7
1.3
1.0
0.82
0.65
0.52
0.41
0.33
0.26
0.20
0.16
0.13
58
Common DC bus
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LXM32
Glossary
Terms and Abbreviations
See chapter " Standards and terminology" for information on the perti-
nent standards on which many terms are based. Some terms and
abbreviations may have specific meanings with regard to the stand-
ards.
AC Alternating current
DC Direct current
DC bus Circuit that supplies the power stage with energy (direct voltage).
Drive system System consisting of controller, drive and motor.
EMC Electromagnetic compatibility
Error Discrepancy between a detected (computed, measured or signaled)
value or condition and the specified or theoretically correct value or
condition.
Error class Classification of errors into groups. The different error classes allow
for specific responses to errors, for example by severity.
Factory setting Factory settings when the product is shipped
Fault Fault is an operating state. If the monitoring functions detect an error,
a transition to this operating state is triggered, depending on the error
class. A "Fault Reset" is required to exit this operating state after the
cause of the detected error has been removed. Further information
can be found in the pertinent standards such as IEC 61800-7, ODVA
Common Industrial Protocol (CIP).
Fault Reset A function used to restore the drive to an operational state after a
detected error is cleared by removing the cause of the error so that
the error is no longer active.
Parameter Device data and values that can be read and set (to a certain extent)
by the user.
PELV Protective Extra Low Voltage, low voltage with isolation. For more
information: IEC 60364-4-41
Persistent Indicates whether the value of the parameter remains in the memory
after the device is switched off.
Power stage The power stage controls the motor. The power stage generates cur-
rent for controlling the motor on the basis of the motion signals from
the controller.
Quick Stop The Quick Stop function can be used for fast deceleration of a move-
ment as a response to a detected error or via a command.
Warning If the term is used outside the context of safety instructions, a warning
alerts to a potential problem that was detected by a monitoring func-
tion. A warning does not cause a transition of the operating state.
Common DC bus
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Glossary
LXM32
60
Common DC bus
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LXM32
Table of figures
Table of figures
11) Wiring of drives with individual AC fuses and mains reactors, example shows singe-phase drives. 37
13) Wiring of drives with common mains fuse, mains reactor and mains filter, example shows three-phase
17) Unlocking the DC bus connector, step 2: Push cables towards connector, at the same time remove the
Common DC bus
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Table of figures
LXM32
62
Common DC bus
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Index
LXM32
Rating information
U
S
T
W
Source
Wiring diagram
64
Common DC bus
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