DCS Wiring

Failsafe Wiring Practices

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Failsafe interlock Design

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 if the design/installation team are not normally controls oriented. This is also an area that causes a lot of rework on the part of the … Read more

PLC Digital Signals Wiring Techniques

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sinking-and-sourcing-digital-output-modules

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 through the sensor and on to the PLC. PLC Digital Signals Wiring Techniques In Above Figure, a level switch is mounted to a vessel. The … Read more

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