Industrial Automation, PLC, VFD, and Troubleshooting
One of the most confusing topics for many automation technicians is sinking and sourcing.
You may hear people say:
PNP sensorNPN sensorSourcing inputSinking inputCurrent sourcingCurrent sinking
At first, it sounds complicated. But the …
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 …
Read MoreIn 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 MoreIntroduction
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 …
Read MoreIntroduction
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 …
Read MoreIntroduction
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 …
Read More