Siemens SINAMICS S120 Equipment Manual page 506

Cabinet Design and EMC Booksize
9.3 24 V DC supply voltage
1. When a Current Supply Module is used, the 24 V supply can be directly established
through the busbars. The electronic current limiting function integrated in the Control Supply
Module protects the busbar system when a fault occurs. Additional loads can be connected
via the 24 V terminal adapter.
Figure 9-1
506
Example: 24 V supply with Control Supply Module
Booksize power units
Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6