Parallel Operation - Siemens SINAMICS S120 Manual

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DC link components

8.6 Control Supply Module CSM

Parallel operation

A maximum of 10 Control Supply Modules can be connected in parallel.

The DIP switch of the Control supply Module must be set to "parallel mode". The same

output voltage must be set for all modules at the potentiometer.

In the parallel mode, each Control Supply Module should supply the 24 V DC voltage via the

24 V terminal adapter. This is the reason that the 24 V connector must not be used (see

connection examples).

For a parallel connection we recommend that a SITOP redundancy module (6EP1961-

3BA20) is used. One SITOP redundancy module must be used for two Control Supply

Modules in this case. Alternatively, a connection with external diodes to decouple the

individual Control Supply Modules is possible. If a Control Supply Module fails, an alarm is

generated and provided via the X21 signaling contact. The 24 V supply is maintained via the

second module.

Parallel connection

Only Control Supply Modules with article number 6SL3100-1DE22-0AA1 may be used for

parallel connection.

Booksize Power Units

Manual, (GH2), 07/2016, 6SL3097-4AC00-0BP8

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