Electromechanical Components - Siemens SINAMICS G120C Operating Instructions Manual
Low voltage converters
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Also See for SINAMICS G120C:
- Operating instructions manual (470 pages) ,
- Compact operating instructions (92 pages) ,
- Getting started (68 pages)
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4.2.3
Electromechanical components
Surge voltage protection circuit
• Connect surge voltage protection circuits to the following components:
– Coils of contactors
– Relays
– 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.
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
4.2 EMC-compliant setup of the machine or plant
Installing
45
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