Core Components

Motors, contactors, relays, VFDs, power supplies, fuses — the hardware that surrounds every PLC. Know these and you can troubleshoot the whole system, not just the code.
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What You'll Learn

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Read motor nameplates

Interpret FLA, service factor, voltage, and RPM to size contactors, breakers, and wiring correctly.

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Trace a motor circuit

Follow the signal path from PLC output → contactor coil → main contacts → motor terminals.

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Read motor nameplates

Calculate 24V DC load requirements and apply derating rules for real panel designs.

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Apply fuses and breakers correctly

Know which protection device goes where and why and the difference between branch circuit and supplementary protection.

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Configure and troubleshoot VFDs

Set up drive parameters, wire analog and digital I/O, and diagnose common drive faults.

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Understand encoder feedback

Distinguish incremental from absolute encoders, read quadrature signals, and connect to high-speed counter inputs.

tors, breakers, and wiring correctly.
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Design a control panel layout

Apply NEMA/IP ratings, DIN rail sizing, component spacing, heat dissipation, and cable management rules.

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Troubleshoot hardware problems

Work through real scenarios: contactor not picking up, VFD faulting on start, overload tripping repeatedly.

Who This Is For

Technicians

You're already working on machines but want to understand the hardware well enough to troubleshoot faster without calling an engineer every time.

Early-Career Engineers

You can write code but the panel hardware is still fuzzy. This fills in the physical layer — the stuff between the PLC and the motor.

Career Changers

Coming from electrical, mechanical, or IT? This module gives you the controls-specific hardware context that textbooks gloss over.

Course Lessons

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