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Failsafe Wiring Practices

S Bharadwaj Reddy
Failsafe wiring practice is one of those topics that separates control system designers and electricians from other technical specialties. This is one of the areas that show up as problems

PLC Digital Signals Wiring Techniques

S Bharadwaj Reddy
Ina process plant, on/off control is done through the PLC or DCS. The below Figure is an overview of one discrete/digital (on/off) circuit, showing the entire process from the power supply

PLC Analog Signals Wiring Techniques

S Bharadwaj Reddy
Unlike the discrete/digital (on/off) circuit, analog signals vary across a range of voltage or current. Taking the same vessel described previously in Digital wiring example, how would the wiring change

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