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DeltaV SIS logic configure..........Reduced Voting Inputs scenario

I've implemented SIS C&F Logic ,there was a customer requirements for reduce input to voting function block when maintenace has required to those transmitters

normally we use to working between  1-16 transmitter inputs so we can calculate the exact number to trip during any of those transmitters being maintenace bypassed.

problem is our voting logic has more than 16 inputs so we can't use only one voter block , are there any exam for this scenario ?  Help me please......!!!

1 Reply

  • i've seen SIS Engineer used an LSCALC block that reduces the NUM_TO_TRIP parameter based on the condition requirement

    CALC OUT1, results of the condition, is wired to NUM_TO_TRIP