Hard-wired 2oo3 Relay Logic
Hard-wired 2oo3 Relay Logic
(OP)
I am looking to implement 2oo3 relay logic to shutdown process equipment. It will tie into an existing hard-wired master control circuit that is normally energized, de-energize to trip.
Three output channels from an existing PLC, through interposing relays that are hardwired in 2oo3 configuration will be connected into the existing master control relay coil circuit.
.
Is there a manufacturer who makes pre-configured plug-in relay modules with 2oo3 logic already configured?
Three output channels from an existing PLC, through interposing relays that are hardwired in 2oo3 configuration will be connected into the existing master control relay coil circuit.
.
Is there a manufacturer who makes pre-configured plug-in relay modules with 2oo3 logic already configured?





RE: Hard-wired 2oo3 Relay Logic
RE: Hard-wired 2oo3 Relay Logic
RE: Hard-wired 2oo3 Relay Logic
My way of thinking about MTBF is not just 2oo3 but make 1 better by not degrading the MTBF from 10^7 mechanical contacts to 10^3 from over stress and improper derating or insufficient arc suppression but I don't know the application. Elevator? Aerosapce?