Can ordinary relays be used in the SIS system?
Safety relay Can ordinary relays be used in the SIS system? 2020-07-17 Can ordinary relays be used in the SIS system? 207

The diagnostic coverage of common relays is relatively low, there is no Fail-Safe related design, and there is no self-diagnostic function, so in some safety systems, where the level is relatively low, such as SIL1 may be used, but at SIL2 and above , It is usually a safety relay with high diagnostic coverage and self-diagnosis function.


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