plc wiring diagram symbols Archives

Failsafe Wiring Practices

Failsafe wiring practice is one of those topics that separates control system designers and electricians from other technical specialties. This

Ina process plant, on/off control is done through the PLC or DCS. The below Figure is an overview of one discrete/digital

Unlike the discrete/digital (on/off) circuit, analog signals vary across a range of voltage or current. Taking the same vessel described