Maricopa Community Colleges  ELA258   19886-20086 
Official Course Description: MCCCD Approval: 07/22/08
ELA258 19886-20086 LEC 3 Credit(s) 3 Period(s)
Magnetic Motor Control
Study of control circuits and devices associated with magnetic motor controls. Practice in selecting and installing appropriate devices for given applications.
Prerequisites: Apprentice status with the Phoenix Electrical Joint Apprenticeship and Training Committee.
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MCCCD Official Course Competencies:
 
ELA258   19886-20086 Magnetic Motor Control
1. Select the proper tools used in the safe completion of an electrical project. (I)
2. Identify commonly used electrical symbols and read simple industrial electrical schematics. (II)
3. Read, interpret, and apply the basic rules of line diagrams. (III)
4. Select manual contactors and manual motor starters for common applications. (IV)
5. Select magnetic solenoids from manufacturers' catalogs to replace or repair defective components. (V)
6. Select AC/DC contactors and magnetic motor starters for common applications. (VI)
7. Select timers from manufacturers' catalogs to repair or replace defective timing devices. (VII)
8. Wire a basic single-phase, three-phase, or DC motor so that it may be reversed manually, mechanically, or automatically. (VIII)
9. Identify the various segments of a power distribution network and connect these segments to obtain proper voltages and currents. (IX)
10. Select from manufacturers' data sheets solid state and electromechanical relays for common applications. (X)
11. Select and install a variety of common industrial control devices. (XI)
12. Select and install a variety of common photoelectric controls and solid state sensors. (XII)
13. Select the appropriate reduced voltage starting system for a particular application based on starting current, torque and cost effectiveness of each system. (XIII)
14. Describe the logic behind accelerating and decelerating circuits, braking methods and AC/DC speed control. (XIV)
15. Implement basic preventive maintenance techniques and troubleshoot common control circuits which include elements such as transformers, motors, magnetic starters, diodes and Silicon Controlled Rectifiers. (XV)
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MCCCD Official Course Outline:
 
ELA258   19886-20086 Magnetic Motor Control
    I. Electrical Tools, Instruments and Safety
        A. Tool Safety
        B. Tools and Tool Usage
      II. Industrial Electrical Symbols
          A. Manual Control Circuits
          B. Automatic Control
          C. Magnetic Control
        III. Introduction to Logic As Applied to Line Diagrams and Basic Control Circuits
            A. Basic Rules of Line Diagrams
            B. Line Diagrams, Signals, Decisions, and Action
            C. Logic Functions
            D. Common Control Circuits
          IV. AC Manual Contactors and Motor Starters
              A. Manual Contactors
              B. Manual Contactors vs. Manual Starters
              C. Enclosures
            V. Magnetism and Magnetic Solenoids
                A. Magnetism
                B. Solenoids
                C. Troubleshooting Magnetic Solenoids
              VI. AC/DC Contactors and Magnetic Motor Starters
                  A. Contactors
                  B. Starters
                VII. Time Delay and Logic
                    A. Intoduction to Timers
                    B. Wiring Diagrams and Specifications for Timers
                  VIII. Reversing Circuits
                      A. Three-Phase Motors
                      B. Single-Phase Motors
                      C. DC Motors
                    IX. Power Distribution Networks
                        A. Power Distribution Systems
                        B. Connecting the Components
                      X. Electromechanical and Solid State Relays
                          A. Types of Relays
                          B. Basic Operation
                          C. Troubleshooting
                        XI. Applications and Installation of Control Devices
                          XII. Photoelectric and Proximity Control and Applications
                            XIII. AC Reduced Voltage Starters
                                A. Reasons for Reduced Voltage Starting
                                B. Types of Starting Methods
                              XIV. Accelerating/Decelerating Methods and Circuits
                                  A. Braking
                                  B. Speed Control
                                XV. Preventive Maintenance and Troubleshooting
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