Installing
3.2 EMC-compliant installation of a machine or system
Power Module PM240P-2
24 Hardware Installation Manual, 06/2020, A5E37800827C AD
3.2.3 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.
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