AC Motor Controls

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Most AC motors are started through a standardized control system designed to protect the motor, the circuit, and operating personnel. Our AC Motor Controls e-learning training focuses on ladder diagrams, wiring, and troubleshooting techniques for the most common motor used in industry, the AC induction motor.

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SKU: CT2030. Category: .


  • Purpose of a Motor Starter
  • Components of a Motor Control Circuit
  • NEMA Starter Size Numbering System
  • Various Motor Starting Requirements
    – Single Speed, Multiple Speed, Reversing, Reduced Voltage, etc.

Common Motor Circuits

  • Symbols for Control Components
  • Manual Starters
  • Magnetic Motor Starter Operation
  • Standard Two and Three Wire Control
  • Wiring Diagrams vs. Ladder Diagrams
  • Troubleshooting Using Ladder Diagrams

Variations on the Motor Control Circuit

  • 120-Volt Control vs. 480/240-Volt Control
  • Control Transformers
  • Proper Fusing and Grounding
  • Multiple Start/Stop Stations
  • Single Phase Motor Starting
  • Time Delay and Latching Relays
  • Pilot Devices – Pressure, Temperature, Level, and Limit Switches

Power Circuits

  • The Combination Motor Starters
  • Checking Power Fuses and Breakers

Wiring Up a Motor Starter

Troubleshooting Control Circuits