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 …
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 MoreA PLC, or Programmable Logic Controller, is one of the most important devices in industrial automation.
It is the controller that reads field signals, executes logic, and controls machine outputs.
A PLC …
Read MoreA PLC does not execute logic randomly.
It follows a repeated process called the scan cycle.
Understanding the scan cycle is one of the most important steps in learning PLC troubleshooting and …
Read MoreIn industrial automation, not every input signal is clean.
A sensor may flicker.A push button may bounce.A limit switch may chatter.A photoeye may blink because of vibration, dust, or product movement.A …
Read MoreIn many industrial machines, not all inputs and outputs are wired directly to the main PLC panel.
Instead, many systems use Remote I/O.
Remote I/O allows input and output modules to be …
Read MoreIntroduction
In industrial automation, sensors are one of the most important parts of a control system. A PLC can execute logic, energize outputs, control motors, start conveyors, open valves, and trigger …
Read MoreIntroduction
In industrial automation, sensors provide the feedback that allows a PLC to understand what is happening in the real machine. However, not all sensors send the same type of signal.
Some …
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Selecting the right sensor is not just about choosing a device that can detect something.
In industrial automation, the correct sensor must detect the right condition, at the right time, in …
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When selecting or troubleshooting an industrial sensor, it is not enough to know the sensor type.
A technician also needs to understand the sensor specifications.
Many sensors look similar from the outside, …
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