Course Objective
A start button or switch is just one of the components required to operate an AC motor. Most motors are started through a standardized control system which is designed to protect the motor, the operator, and other personnel. This course focuses on ladder diagrams, wiring, and troubleshooting techniques for the most common motor used in industry.

Activities
Connect and operate various motor circuits
Troubleshooting problems in motor circuits
Each attendee receives a pocket guide along with the course manual


Outline

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

Common Motor Circuits
Diagram Symbols for Control Components
Manual Starters
Magnetic Motor Starter Operation
Standard Two and Three Wire Control
Wiring Diagrams vs. Ladder Diagrams
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
Other Control Components
Time Delay and Latching Relays
Pilot Devices - Pressure, Temperature, Level, and Limit Switches
Pilot Light Color Codes

Other Starting Requirements
Reversing Starter Circuits
Across-the-line vs. Reduced Voltage Starting
Resistance or Reactance Reduced Voltage Starting
Auto-transformer Starting
Wye Start / Delta Run
Various Two Speed Starter Arrangements
Pump Controls

Power Circuits
The Combination Motor Starters
Checking Power Fuses and Breakers

Wiring Up a Motor Starter
Classroom Exercises

Troubleshooting Control Circuits