Electromechanical Components - Siemens SINAMICS G120 Operating Instructions Manual

Low voltage converters built-in and wall mounting units with cu230p-2 control units

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4.1 EMC-compliant setup of the machine or plant

Electromechanical components

Surge voltage protection circuit

● Connect surge voltage protection circuits to the following components:

– Coils of contactors

– Solenoid valves

– Motor holding brakes

● Connect the surge voltage protection circuit directly at the coil.

● Use RC elements or varistors for AC-operated coils and freewheeling diodes or varistors

for DC-operated coils.

Converter with the CU230P-2 Control Units

Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE

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Sinamics g120p