Safety instrumented systems, the issue of SIL rating certification for instruments

2018-01-29View Original

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I’m seeking advice from experts: since the safety instrumented loop needs to meet the SIL2 standard, if the loop includes information related to the motor’s operating status, do the ammeters or motor protectors also require SIL certification?

Reply #22018-01-29

Yes, any signal that enters the SIS must have a SIL rating

Reply #32018-01-30

Have there been ammeters and motor protectors that meet SIL certification requirements? I haven’t seen any yet

Reply #42018-01-30

Isn’t the operating status of a motor just a digital signal? There are no particular requirements regarding ammeters and protectors, right?

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Safety instrumented systems, the issue of SIL rating certification for instruments

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