Industrial Automation, PLC, VFD, and Troubleshooting
One of the most common problems in industrial automation is this:
The sensor detects the target, but the PLC input does not turn ON.
Sometimes the sensor LED is ON.Sometimes the sensor …
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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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One of the most common troubleshooting situations in industrial automation is when a field sensor appears to be working, but the PLC does not see the input.
A technician may see …
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