Industrial Automation, PLC, VFD, and Troubleshooting
A Practical Field Guide for Automation and Maintenance Technicians
Electrical panel troubleshooting becomes much easier when the technician follows a clear process. The goal is not to guess, replace random parts, …
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A Variable Frequency Drive, commonly called a VFD, is one of the most important devices used in modern industrial motor control. If you work around pumps, fans, conveyors, mixers, blowers, …
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A Variable Frequency Drive is a powerful industrial motor control device, but it is also a piece of electrical equipment that can contain dangerous voltage, stored energy, sensitive electronics, and …
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The HIM, or Human Interface Module, is one of the most useful tools a technician can use when working with a Variable Frequency Drive.
A VFD can be controlled and diagnosed …
Read MoreIndustrial automation can feel overwhelming at first.
One day you are troubleshooting a motor starter. The next day you are looking at a PLC program, checking a sensor, connecting to an …
Read MoreElectricity is the foundation of industrial automation.
Before a technician can troubleshoot PLCs, sensors, VFDs, relays, motors, HMIs, or control panels, they must understand the basic electrical concepts that make everything …
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 MoreIn industrial automation, three terms appear everywhere:
PLCHMISCADA
They are connected, but they are not the same thing.
A PLC controls the machine.An HMI allows the operator to interact with the machine.SCADA supervises, …
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 MoreA VFD, or Variable Frequency Drive, controls motor speed, direction, acceleration, deceleration, torque, and protection.
In older or simpler systems, a PLC may control a VFD with hardwired signals.
Example:
PLC Output → …
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