PLC troubleshooting is not about guessing which part is bad.
A good Automation Technician follows a method.
When a machine does not run, the problem could be in many places:
Field device
Sensor wiring
24 …
Motor Feedback, Faults, and Interlocks: Command vs Proof in Industrial Automation
One of the most important concepts in industrial automation is this:
A command is not the same as proof.
A PLC can …
Read MoreInside an Industrial Control Panel
An industrial control panel is the heart of many automation systems.
Inside the panel, power is distributed, control voltage is created, PLCs make decisions, inputs and outputs …
Read MoreAlmost every industrial machine depends on motors.
Conveyors, pumps, fans, mixers, compressors, fillers, wrappers — all rely on motor control logic.
That means:
If you understand motor control, you understand a large portion …
Read MoreIntroduction
Industrial sensors are not installed only to turn a PLC input ON or OFF.
They are installed to give the PLC useful feedback from the real machine.
A sensor can tell the …
Read MoreIntroduction
In industrial automation, one of the most important differences a technician must understand is the difference between a fault and an alarm.
At first, both may look similar because both indicate …
Read More
33. PLC Programming Best Practices: Structure, Tags, Comments, and Troubleshooting ( 33 of 35 )
PLC Programming Best Practices
A PLC program should not only make the machine run.
A good PLC program should also be:
Easy to understand
Read MoreEasy to troubleshoot
Easy to modify
Easy to document
Easy to recover
Safe to …