Parallel Connection Of Motor Modules - Siemens SINAMICS S120 Equipment Manual

4.6.5

Parallel connection of Motor Modules

The following rules must be observed when connecting Motor Modules in parallel:
● Up to 4 identical Motor Modules can be connected in parallel.
● A common Control Unit is required whenever the modules are connected in parallel.
● The motor supply cables must be the same length (symmetrical design).
● Power must be supplied to the Motor Modules from a common DC link.
● For motors with a single winding system, the length of the supply cables must be kept to
● A derating factor of 5 % must be taken into consideration, regardless of the number of
Minimum cable lengths for parallel connection and connection to a motor with a single-winding
system
NOTICE
The minimum motor cable lengths specified in the tables below must be observed when
two or more Motor Modules are connected in parallel and there is a connection to a motor
with a single-winding system. If the cable length required for the application cannot be
achieved, a motor reactor must be provided.
Table 4- 25
6SL3320-1TE32-1AAx
6SL3320-1TE32-6AAx
6SL3320-1TE33-1AAx
6SL3320-1TE33-8AAx
6SL3320-1TE35-0AAx
6SL3320-1TE36-1AAx
6SL3320-1TE37-5AAx
6SL3320-1TE38-4AAx
6SL3320-1TE41-0AAx
6SL3320-1TE41-2AAx
6SL3320-1TE41-4AAx
Chassis power units
Manual, (GH3), 10/2008, 6SL3097-2AE00-0BP3
a minimum or motor reactors must be used. The cable lengths are listed in the following
tables.
modules connected in parallel.
510 V DC – 720 V DC Motor Modules
Order number Power [kW] Output current [A]
110
132
160
200
250
315
400
450
560
710 1260
800 1405
4.6 Technical specifications
Minimum cable length [m]
210
260
310
380
490
605
745
840
985
Motor Modules
30
27
20
17
15
13
10
9
8
6
5
179