Industrial Automation, PLC, VFD, and Troubleshooting
An interlock is a condition used to prevent two incompatible or unsafe actions from happening at the same time.
In simple words:
An interlock blocks an action when another condition makes that …
Read MoreSeal-In Circuits Explained
A seal-in circuit is one of the most important basic patterns in PLC ladder logic and relay logic.
It is commonly used when an operator presses a momentary Start …
Read MoreWhy a Motor Starter Can Be Commanded but the Motor Still Does Not Run
When troubleshooting electrical control panels, one of the most important concepts a technician must understand is the …
Read MoreWhen a motor fails in a real plant, the problem is rarely just “the motor is bad”.
Most of the time the issue is somewhere in this chain:
PLC Logic → Wiring …
Read MoreOne of the Most Important PLC Ladder Logic Patterns
One of the first ladder logic circuits every PLC beginner should understand is the Start/Stop seal-in circuit.
This circuit is also called a:
Start/Stop …
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