Industrial Automation, PLC, VFD, and Troubleshooting
In industrial automation, the PLC does not know what is happening in the real world unless field devices send information back to it.
That is the job of sensors.
Sensors detect physical …
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 MoreOne 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 MoreIndustrial instrumentation is one of the most important areas of automation.
Sensors tell the PLC when something is ON or OFF.
Instrumentation tells the PLC how much, how high, how hot, how …
Read MoreIn industrial automation, not every signal is simply ON or OFF.
Some devices need to send a real measurement to the PLC.
Examples:
Pressure = 72.5 PSITank Level = 63%Temperature = 180°FFlow = …
Read MoreIndustrial automation is not only about starting motors, reading sensors, or turning outputs ON and OFF.
Many machines and processes need to measure real physical values.
Examples:
Temperature = 180°FPressure = 72 PSITank …
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 MoreLadder logic is one of the most common programming languages used in industrial automation.
It is used to program PLCs that control machines, conveyors, pumps, valves, motors, packaging equipment, process systems, …
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