Industrial Automation, PLC, VFD, and Troubleshooting
In industrial automation, a sensor can be good, the PLC input card can be good, and the logic can be correct — but the machine can still fail because of …
Read MoreOne of the most confusing topics for new automation technicians is the difference between PNP, NPN, sourcing, and sinking.
This confusion usually appears when a sensor has power, the sensor LED …
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In industrial automation, many DC sensors are either PNP or NPN.
This is one of the most important wiring concepts for PLC technicians to understand because it determines how current flows …
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In industrial PLC systems, sensors are commonly wired as either 2-wire or 3-wire devices.
At first, this sounds simple:
2-wire sensor = two wires3-wire sensor = three wires
But the real difference is …
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Sensor wiring is one of the most important parts of a reliable industrial control system.
A PLC program can be well written.The sensor can be the correct model.The machine logic can …
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