SINAMICS S120
DC Coupling of
Booksize and Chassis
Modules
SINAMICS S120
https://support.industry.siemens.com/cs/ww/en/view/109757730
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DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
2
1 Introduction
1
Introduction
SINAMICS S120 solves complex drive tasks for a wide range of industrial applications
and is designed as a modular system. Users can select from many different harmonized
components and functions to create a solution that best meets their requirements.
SINAMICS S120 features Line and Motor Modules that cover a broad power range. They are
available in different formats: Booksize Modules up to 120kW and Chassis Modules for larger
power ranges. In several applications drives are required to be connected to a common DC bus,
which allows cost-saving energy balancing between braking and driving axes. Any combination
of modules within the existing families, e.g. Chassis Line Modules with any number of Chassis
Motor Modules or Booksize Line Modules with any number of Booksize Motor Modules is
already sufficiently qualified and described in the existing manuals.
The relevant documents can be accessed at following address:
https://support.industry.siemens.com/cs/ww/en/ps/13231/man?ml=en
Copyright  Siemens AG 2018 All rights reserved
This document describes the connection of Chassis Line and Motor Modules and Booksize
Motor Modules to one common DC bus. In the further text such a system may also be called
mixed installation or mixed system.
The existing manuals for the S120 system have to be observed as well.
Mixed installation of S120 Booksize and Chassis Modules according to this application
description is certified by UL (File.No. E192450 / Volume 5 /Section 23).
The document is intended for both panel builders and field assembly. Installations that follow
these instructions are UL listed and will not require procedure description in the industrial control
panel builder report (UL508A and CSA C22.2 No.14).
Some sections are marked as IEC requirements. These are not approved by UL.
DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
3
2 Overview Hardware Structure
2
Overview Hardware Structure
An example of an application using Booksize Motor Modules together with Chassis Modules is
shown in the picture below to explain the most important components involved. Details on those
components are given in the next chapters.
1)
Primary Circuit
Conductor Protection
Chassis Line Module
3.2
Line reactor
DC fuse
3.1
M
3~
Chassis Motor Module
M
3~
DC fuses are integrated in Smart
Line Modules und Active Line
Modules, but not integrated in
Basic Line Modules
1)
3.3 Common DC busbar 510...720V DC
4.1.1 Connection from 4.1.1
Common DC Bus to DC
Tap Conductor Protection
EMC
Filter
Damping
Filter
Alternative to line reactor:
Active Interface Module
Only for Active Line Module
4.1.3
DC Tap
Conductors to
Motor
Module
4.1.2
DC Tap Conductor Protection
4.1.3
4.1.4 DC link adapters 4.1.4
M
3~
M
3~
M
3~
Booksize Motor Module
4.1.2
Booksize Motor
Module Group
Copyright  Siemens AG 2018 All rights reserved
Line
3AC 380...480V
4.1.5
Grounding Conductors
Picture 1: overview picture
All components except the motors have to be located within a common enclosure, which is
either a single enclosure or several enclosures mechanically attached such that no wiring
between components (other than to the motor) is part of the installation wiring.
DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
4
3 System Components for common DC bus
3.1 Primary Circuit Conductor Protection
3
System Components for common DC bus
3.1
Primary Circuit Conductor Protection
Primary circuit conductor protection fuses are listed in the manuals for Chassis Line Modules.
These documents can be found at
https://support.industry.siemens.com/cs/ww/en/view/109754207 for air cooled modules and at
https://support.industry.siemens.com/cs/ww/en/view/109746526 for liquid cooled modules.
Currently only semiconductor fuses are certified as Primary Circuit Conductor Protection for
these Line Modules. The sizing of Primary Circuit Conductor Protection is not part of this
document.
Copyright  Siemens AG 2018 All rights reserved
3.2
Line Modules (Converter Section)
Table 1 shows all suitable Line Modules air cooled in Chassis format.
If even larger power is required, Chassis Line Modules of any type (Active Line Module, Smart
Line Module or Basic Line Module) can be connected in parallel. Only identical modules are
permitted for this operation. Maximum number is limited to 4 units in parallel. All Line Modules
have to be powered from the same source. Details on parallel connection can also be found in
the manual for Chassis Line Modules.
For proper and safe operation, line reactors in accordance with table 1 are required to be
installed with every Basic or Smart Line Chassis Module as shown in picture 1. Active Line
Modules are only permitted to be used together with Active Interface Modules. Line reactors and
Active Interface Modules are shown in picture 1.
Line Modules might be installed together with Line Connection Modules that are helpful for
easier installation of line side components and fuses, details in
https://support.industry.siemens.com/cs/ww/en/view/109749470
Abbreviations:
BLM: Basic Line Module
SLM: Smart Line Module
ALM: Active Line Module
AIM: Active Interface Module
Line voltage
Input frequency
380 V … 480 V 3-ph. AC
50 Hz … 60 Hz
DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
5
3 System Components for common DC bus
3.2 Line Modules (Converter Section)
Copyright  Siemens AG 2018 All rights reserved
3.2.1
Air Cooled Line Modules
Article Number
BLM 400V Chassis
6SL3330-1TE34-2AA3
6SL3330-1TE35-3AA3
6SL3330-1TE38-2AA3
6SL3330-1TE41-2AA3
6SL3330-1TE41-5AA3
6SL3330-1TE41-8AA3
SLM 400V Chassis
6SL3330-6TE35-5AA3
6SL3330-6TE37-3AA3
6SL3330-6TE41-1AA3
6SL3330-6TE41-3AA3
6SL3330-6TE41-7AA3
ALM 400V Chassis
6SL3330-7TE32-1AA3
6SL3330-7TE32-6AA3
6SL3330-7TE33-8AA3
6SL3330-7TE35-0AA3
6SL3330-7TE36-1AA3
6SL3330-7TE37-5AA3
6SL3330-7TE38-4AA3
6SL3330-7TE41-0AA3
6SL3330-7TE41-2AA3
6SL3330-7TE41-4AA3
Power Rating
[kW] @400V
AC current
(line side) [A]
200
250
400
560
710
900
365
460
710
1010
1265
1630
250
355
500
630
800
463
614
883
1093
1430
132
160
235
300
380
450
500
630
800
900
210
260
380
490
605
745
840
985
1260
1405
DC current Line side power
[A]
components
line reactor
420 6SL3000-0CE35-1AA0
530 6SL3000-0CE35-1AA0
820 6SL3000-0CE37-7AA0
1200 6SL3000-0CE41-0AA0
1500 6SL3000-0CE41-5AA0
1880 6SL3000-0CE41-6AA0
line reactor
550 6SL3000-0EE36-2AA0
730 6SL3000-0EE36-2AA0
1050 6SL3000-0EE38-8AA0
1300 6SL3000-0EE41-4AA0
1700 6SL3000-0EE41-4AA0
AIM
235 6SL3300-7TE32–6AA.
291 6SL3300-7TE32–6AA.
425 6SL3300-7TE33–8AA.
549 6SL3300-7TE35–0AA.
678 6SL3300-7TE38–4AA0
835 6SL3300-7TE38–4AA0
940 6SL3300-7TE38–4AA0
1103 6SL3300-7TE41–4AA0
1412 6SL3300-7TE41–4AA0
1574 6SL3300-7TE41–4AA0
Table 1: Air Cooled Line Modules
ALM and SLM have integrated DC bus fuses, as shown in picture 1. BLM do not have DC bus
fuses integrated. In case that BLMs are connected in parallel, separate DC bus fuses need to
be installed for each BLM. The DC bus fuses as shown in table 2 shall be used. The fuses have
to be installed for both, the positive and the negative conductor of the DC bus, between the
output of each BLM and the common DC bus conductor.
Article Number
BLM 400V Chassis
6SL3330-1TE34-2AA3
6SL3330-1TE35-3AA3
6SL3330-1TE38-2AA3
6SL3330-1TE41-2AA3
6SL3330-1TE41-5AA3
6SL3330-1TE41-8AA3
Power Rating DC bus fuse for
[kW] @400V IEC application
Siemens
200
3NE3334-0B
250
3NE3336
400
3NE3333
560
3NE3337-8
710
3NE3340-8
900
3NE3337-8
number of
DC bus fuse for UL
fuses in parallel or IEC application
Siemens
1
3NE3334-0B
1
3NE3336
2
3NB2350-4KK16
2
3NB2355-4KK16
2
3NB2364-4KK17
3
3NB2366-4KK17
Table 2: DC bus fuses for Basic Line Modules
DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
6
3 System Components for common DC bus
3.2 Line Modules (Converter Section)
3.2.2
Liquid Cooled Line Modules
Article Number
BLM 400V Chassis
6SL3335-1TE37-4AA3
6SL3335-1TE41-2AA3
6SL3335-1TE41-7AA3
ALM 400V Chassis
6SL3335-7TE35-0AA3
6SL3335-7TE36-1AA3
6SL3335-7TE38-4AA3
6SL3335-7TE41-0AA3
6SL3335-7TE41-4AA3
Power Rating
[kW] @400V
AC current
(line side) [A]
360
600
830
610
1000
1420
300
380
500
630
900
490
605
840
985
1405
DC current Line side power
[A]
components
line reactor
740 6SL3000-0CE36-3AA0
1220 6SL3000-0CE41-0AA0
1730 6SL3000-0CE41-5AA0
AIM
549 6SL3300-7TE35–0AA.
677 6SL3305-7TE38–4AA5
941 6SL3305-7TE38–4AA5
1100 6SL3305-7TE41–4AA5
1573 6SL3305-7TE41–4AA5
Table 3: Liquid Cooled Line Modules
Copyright  Siemens AG 2018 All rights reserved
At liquid cooled Line Modules, ALM and BLM do not have DC bus fuses integrated. Separate
DC bus fuses need to be installed for each module.
Article Number
BLM 400V Chassis
6SL3335-1TE37-4AA3
6SL3335-1TE41-2AA3
6SL3335-1TE41-7AA3
ALM 400V Chassis
6SL3335-7TE35-0AA3
6SL3335-7TE36-1AA3
6SL3335-7TE38-4AA3
6SL3335-7TE41-0AA3
6SL3335-7TE41-4AA3
Power Rating DC bus fuse for
[kW] @400V IEC application
Siemens
360
3NE3335
600
3NE3337-8
830
3NE3337-8
number of
DC bus fuse for UL
fuses in parallel or IEC application
Siemens
2
3NB2345-4KK16
2
3NB2355-4KK16
3
3NB2366-4KK17
300
380
500
630
900
1
1
2
2
2
3NE3336
3NE3338-8
3NE3335
3NE3336
3NE3340-8
3NB23454KK16
3NB2345-4KK16
3NB2345-4KK16
3NB2355-4KK16
3NB2364-4KK17
Table 4: DC bus fuses for Basic Line Modules and Active Line Modules liquid cooled
DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
7
3 System Components for common DC bus
3.3 Common DC Busbars
3.3
Common DC Busbars
In this application, the nominal DC bus voltage has to be between 510V and 720V DC. Active
Line Modules must be configured that the maximum DC voltage is limited accordingly. Details
about setting the parameters are given in the function manual and in the list manual.
Function manual: https://support.industry.siemens.com/cs/ww/en/view/51677403/en
List manual:
https://support.industry.siemens.com/cs/ww/en/view/56745894/en
Busbars connected to the Chassis Line Modules have to be
 Installed acc. to UL508A (internal wiring only, no field wiring)
 Protected against mechanical damage
Copyright  Siemens AG 2018 All rights reserved
Example for DC busbars: Siemens Busbar System 8US
Details about the Siemens busbar system and its components like connection modules,
supports, covers etc. can be found in Siemens Industry Online Support (SIOS)
https://support.industry.siemens.com/cs/products?search=8US%20busbar%20power%20distrib
ution%20system&lc=en-WW
The rated current of the busbars shall not be less than the rated DC current of the Line Module.
If Line Modules are connected in parallel, the rated current of the busbar shall not be lower than
the sum of the rated output currents of the Line Modules. The sum of the rated DC input
currents of all Motor Modules that are connected to the busbars and running at the same time
has to be considered as well. The ampacity of the busbars has to be calculated by the factor
2
2
1000A / in (1,55A / mm ).
UL certified only if using the following components:
Double-T Profile Part No.
8US1948-2AA00
nominal current
1400A
Busbar supports: 8US1943-3AA00
Maximum spacing of busbar supports: 800mm
For mechanical stability, all three profiles (busbars) have to be assembled. DC connection has
to be done with the outer profiles.
Once the installation is done with these components, a SCCR of 100kA for the whole system
can be achieved. SCCR values of Line and Motor Modules or additional components might limit
this to lower values.
Other components or busbars with higher or lower current rating might be used as well. In this
case, further UL investigation has to be done in the application.
To connect the Line Modules to the busbar system the feeder lug 8US1941-2AA04 shall be
used, which connects to busbars up to 32mm by 20mm. Together with this feeder lug, the cover
8US1922-1GC00 has to be used.
DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
8
4 Connection of Booksize Motor Modules
4.1 General
4
Connection of Booksize Motor Modules
4.1
General
The connection of Booksize Motor Modules to the main DC link busbar (common DC bus
conductor) requires additional components.
The Motor Modules can be connected to the main DC link busbar individually or in groups. This
chapter describes the general aspects. Specific selection tables are provided in subsequent
chapters.
4.1.1
Connection from Common DC Bus to DC Tap Conductor Protection
This connection can be made with either wires or busbars and has to be as short as possible
Busbar connections to the DC Tap Conductor Protection
Copyright  Siemens AG 2018 All rights reserved
Busbars can be connected by power terminal assemblies
adapter
number of terminals
1)
3 pole
8US1941-2AA04
1) Cover required 8US19 22-1GC00
busbar size
up to 32 x 20mm
2
2
DC tap busbars shall be sized by the factor 1000A/in (1,55A/mm ). The nominal current of
individual Motor Modules can be obtained from table 6, column DC current. Busbars for groups
of Motor Modules have to be sized to the sum of the rated input DC currents of all Motor
Modules installed in the Booksize Motor Module group and running at the same time.
Wire connections to the DC Tap Conductor Protection
The wires shall be connected by power terminal assemblies
adapter
8US1921-1BA02
wire size mm
2
1,5…16 mm
2
wire size AWG
AWG 14 … 6
2
8US1921-1CB02
6…50 mm
AWG 10..2/0
2
8US1921-1AA00
35…120 mm
AWG 2..250MCM
2)
2
8US1941-2AA03
95…300 mm
3/0…600MCM
2) Cover required 8US19 22-1GC00
current rating [A]
48 A
175 A
600 A
500 A
note
only up to
50kA SCCR
-
Table 5: Wire connections to the DC Tap Conductor Protection
As a protection against short circuit one of the following measures must be implemented:
 use wires suitable for enhanced protection
 maintain adequate clearance, using spacers, for example
 route the wires in separate cable ducts or conduits
The wires shall have a minimum temperature rating of 90°C and a minimum voltage rating of
600VAC.
4.1.2
DC Tap Conductor Protection
These protection fuses provide two functions:
1. to limit a fault current in case of a failure in the Motor Module
2. to separate the fault from the remaining devices connected to the common DC bus in
case of a failure, so the remaining drives may remain operational.
DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
9
4 Connection of Booksize Motor Modules
4.1 General
There has to be one DC fuse for each tap conductor, the positive and the negative DC bus.
Both fuses shall be identical i.e. shall have the same model number (means same
manufacturer, type & rating). Always after the fault and correcting the root cause of the
fault, both the fuses shall be replaced, even though only one of them has operated and opened
to clear the fault, and the other appears intact.
Only the DC fuses and fuse bases specified in table 6 in this manual shall be used.
Other fuses shall not be used. These fuses provide short circuit protection only, overload
protection is integrated into the power modules.
4.1.3
DC Tap Wires to the Motor Module
The wires shall have a minimum temperature rating of 90°C and a minimum voltage rating of
600VAC.
4.1.4
DC link adapters
Booksize Motor Modules have to be connected via DC link adapters. Cable lugs or the like shall
not be used. Different adapters are available to connect individual Motor Modules or groups of
Motor Modules.
Copyright  Siemens AG 2018 All rights reserved
DC link adapters for individual Motor Modules
6SL3162-2BD00-0AA0,
2
2
wire size 0,5mm to 16mm
(AWG 20 to 6)
Rated current 43 A
for 50mm and 100mm modules
DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
6SL3162-2BM00-0AA0,
2
2
wire size 35mm to 120mm (AWG 4 to 4/0)
Rated current 200A (150A if only one screw
is used for connection of DC link)
for 150mm, 200mm and 300mm modules
10
4 Connection of Booksize Motor Modules
4.2 Connection of individual Booksize Motor Modules
DC link adapters for groups of Motor Modules
6SL3162-2BM01-0AA0
2
2
Wire size: 35mm to 120mm (AWG 4 t 4/0)
Rated Current: 200A (150A if only one screw is used for connection of DC link)
Copyright  Siemens AG 2018 All rights reserved
4.1.5
Grounding conductors
According to the NEC (National Electrical Code), the protective conductor for each motor
module has to be sized according to the upstream over-current protection device. See tables 6
and 7.
IEC requirements for the minimum size of the grounding conductor can be found in the same
2
tables. Grounding conductor for IEC is sized according to I t let through values of the DC fuse.
For IEC applications, protective connection via the mounting plate is possible. In this case, the
notes on protective connection and equipotential bonding in section 12.9 of
https://support.industry.siemens.com/cs/ww/en/view/109754297
or section 6.9 of https://support.industry.siemens.com/cs/ww/en/view/109751877
have to be observed.
4.2
Connection of individual Booksize Motor Modules
Detailed information on the installation of Booksize Motor Modules can be found at
https://support.industry.siemens.com/cs/ww/en/view/109740021 or
https://support.industry.siemens.com/cs/ww/en/view/109480219
Table 6 shows the relevant data for the connection of Booksize Motor Modules to a common DC
bus.
DC Coupling Booksize Chassis
Entry -ID: 109757730, V1.2, May 2018
11
4 Connection of Booksize Motor Modules
4.2 Connection of individual Booksize Motor Modules
Copyright  Siemens AG 2018 All rights reserved
Article Number
2)
6SL312*- 1TE13-0A..
1TE15-0A..
1TE21-0A..
1TE21-8A..
1TE22-4A..
1TE23-0A..
1TE24-5A..
1TE26-0A..
1TE28-5A..
1TE31-3A..
1TE32-0A..
Current
(Motor)
AC [A]
3
5
9
18
24
30
45
60
85
132
200
Current
DC
DC [A]
3,3
5,6
10
20
26,4
33,3
54
72
104
162
200
DC fuse link order no. NomiWire size DC min. grounding
Type: URS SQB1
nal
Fuse base
link (chapter
conductor size
1250V
current
order no.
3.5 and 3.7) according to NEC
2
2
supplier: SIBA
fuse
supplier: SIBA AWG mm
AWG
mm
1)
20 71x 32.50
50
21 323 01
14
2,5
14
2,5
1)
20 71x 32.50
50
21 323 01
14
2,5
14
2,5
1)
20 71x 32.50
50
21 323 01
14
2,5
14
2,5
1)
20 71x 32.50
50
21 323 01
10
6
10
6
1)
20 71x 32.63
63
21 323 01
10
6
10
6
1)
20 71x 32.80
80
21 323 01
8
10
8
10
1)
20 71x 32.125
125
21 323 01
2
35
6
16
1)
20 71x 32.160
160
21 323 01
2
35
6
16
1)
20 71x 32.200
200
21 323 01
2
35
6
16
1)
20 71x 32.315
315
21 323 01
2/0
70
3
35
1)
20 71x 32.400
400
21 323 01
3/0
95
3
35
1)
6SL312*- 2TE13-0A..
2x3
7,2
20 71x 32.50
50
21 323 01
14
2,5
14
2,5
1)
2TE15-0A..
2x5
12
20 71x 32.50
50
21 323 01
14
2,5
14
2,5
1)
2TE21-0A..
2x9
22
20 71x 32.50
50
21 323 01
10
6
10
6
1)
2TE21-8A..
2x18
43
20 71x 32.100
100
21 323 01
8
10
8
10
1)
x may be
European standard: 3 for flap indicator, 4 for flap indicator with single bracket or 5 for central indicator
US standard: 8 for central indicator or 9 without indicator
2)
Any Motor Module can be used that is represented by “..” in the Article Number as long as it is rated for up to 720V DC
* can be
0 for internal air cooled unit
1 for external air cooled unit
5 for liquid cooled unit
min. grounding
conductor size
according to IEC
2
mm
1,5
1,5
1,5
1,5
1,5
2,5
2,5
2,5
2,5
6
6
1,5
1,5
1,5
2,5
Note: 6 for cold plate unit is not allowed
Table 6 Connection of individual Booksize Motor Modules
DC Coupling Booksize Chassis
Entry-ID: 109757730, V1.2, May 2018
12
4 Connection of Booksize Motor Modules
4.3
Connection of Booksize Motor Module groups
Booksize Motor Modules can be connected in groups combined on a separate part of the DC
bus. In this case the DC bus included in the modules is used for electrical connection.
There is no limitation regarding different types and number of motor modules that can be used
for this application
The rated DC current of the group is the sum of rated DC input currents of all motor modules
installed in the group and running at the same time. The conductors and DC bus fuses must be
selected according to the sum current. Table 7 shows the components to be installed based on
the sum of the DC current in the group. The row with the next higher current shall be used. The
sum current shall not exceed 200A. To connect the DC Tap Wires to a group of Booksize Motor
Modules, the DC link adapter for side connection (6SL3162-2BM01-0AA0) must be used.
The actual current rating of the internal DC link busbar of the individual Motor Modules must not
be exceeded.
Copyright  Siemens AG 2018 All rights reserved
Selection Table:
Sum of
DC
current
DC [A]
30
50
85
115
150
175
200
DC fuse link
order no.
Type: URS
SQB1 1250V
supplier: SIBA
1)
20 71x 32.80
1)
20 71x 32.100
1)
20 71x 32.160
1)
20 71x 32.250
1)
20 71x 32.315
1)
20 71x 32.350
1)
20 71x 32.400
1) x can be
Fuse base
order no.
Grounding
Rated
Type: URS DC tap wire conductor
current
SQB1
size
size NEC
2
2
fuse
supplier: SIBA AWG mm AWG mm
80
21 323 01
2
35
8
10
100
21 323 01
2
35
8
10
160
21 323 01
2
35
6
16
250
21 323 01
2
35
4
25
315
21 323 01
1/0
70
3
35
350
21 323 01
2/0
70
3
35
400
21 323 01
3/0
95
3
35
Grounding
conductor
size IEC
2
mm
2,5
2,5
2,5
4
6
6
6
European standard: 3 for flap indicator, 4 for flap indicator with single
bracket or 5 for central indicator
US standard: 8 for central indicator or 9 without indicator
Table 7: Connection of Booksize Motor Module groups
DC Coupling Booksize Chassis
Beitrags-ID: 109757730, V1.2,
May 2018
13