AIT 225 - Industrial Motors and Motor Controls

1. Test DC, single-phase AC, and 3-phase AC electric motors.
2. Interpret electric motor control component symbols and motor control circuit diagrams/schematics.
3. Describe motor control circuit components, such as contactors, manual starters, control relays, auxiliary contacts and overloads.
4. Install motor control circuit components, such as contactors, manual starters, control relays, auxiliary contacts and overloads.
5. Troubleshoot electrical motor control circuit faults.

1. Operate and test DC, single phase AC, and 3-phase AC electric motors
   1. Operation of DC and AC electric motors
   2. Operation of DC motor configurations (e.g., compound, series, shunt)
   3. DC and AC motor specifications interpretations
   4. DC and AC motor nameplate interpretation
   5. Multimeter and mega-ohmmeter (megger) testing DC and AC motors
   6. Operation of a DC motor speed controller (function/purpose)
   7. Function of a motor brake 
   8. Operation and function of a bearing grounding ring
   9. How to select an AC motor overload
   10. Descriptions and calculations of synchronous motor speed, types of motor torque, horsepower, kilowatts, apparent power, true power, motor slip, motor efficiency and operational cost analysis
   11. Power factors and power factor corrections
2. Interpret electric motor control component symbols and motor control circuit schematic diagrams.
   1. Interpret ladder and wiring diagrams
   2. Types of basic electrical relay components and electric motors
   3. Schematic and wiring diagrams including, labels, electrical symbols and connections
3. Describe the operation of and install motor control circuit components, such as contactors, manual starters, control relays, auxiliary contacts, and overloads
4. Explain what an electric motor control circuit is and how it functions.
5. Install and operate the following circuits
   1. Manual motor starters
   2. Basic machine control 
   3. Magnetic motor control
   4. Reversing motor 
   5. Sequence
   6. Timers
6. Troubleshooting 
   1. Electrical motor relay control circuit fault
   2. Basic electrical relay components and electric motors
   3. Basic electrical components in an electrical relay control circuit using in-circuit tests
   4. Using a multimeter to take electrical circuit readings during in-circuit testing
   5. Systematic methodology for electrical relay control circuits with AC and DC motors with various symptoms