Maricopa Community Colleges  ABC261   19952-19956 
Official Course Description: MCCCD Approval: 11/28/95
ABC261 19952-19956 L+L 2 Credit(s) 2 Period(s)
Adv Controls and Signaling Systems
Operating principles and use of solid-state motor controls. Includes motor braking, jogging, plugging and troubleshooting and maintenance of fire alarm and signaling systems. Prerequisites: (Indentured status with Associated Builders and Contractors, Inc., and ABC221) or permission of the apprenticeship coordinator.
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MCCCD Official Course Competencies:
 
ABC261   19952-19956 Adv Controls and Signaling Systems
1. Explain how control input voltage is separated from the higher line voltage on solid-state motor control devices. (I)
2. Describe specific types of motor control devices and their mainteance. (II)
3. Describe the characteristics of AC magnetic starters. (III)
4. Explain the operating principles and maintenance of AC magnetic reversing motor controllers and combination starters. (IV)
5. Describe specific miscellaneous motor controls that are used in motor control circuits. (V)
6. List the common types of motors designed for operation at different speeds and their unique characteristics. (VI)
7. Describe the operating characteristics of and install speed regulating rheostats and controllers. (VII)
8. Explain the physical characteristics and operating principles of solid-state control circuits. (VIII)
9. Demonstrate and troubleshoot jogging, plugging and braking methods for motor deceleration. (IX)
10. Explain the operating principles of security/fire alarm systems, and identify their components. (X, XI)
11. Explain the provisions of the NEC Articles and Sections pertaining to signaling systems. (XII)
12. Describe the requirements and procedures for preventive maintenance and troubleshoot specific fire alarm systems. (XIII)
13. Describe the operating principles of and troubleshoot specific miscellaneous signaling systems. (XIV)
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MCCCD Official Course Outline:
 
ABC261   19952-19956 Adv Controls and Signaling Systems
    I. Advanced motor controls
        A. Components
          1. Graphic symbols
          2. Solid-state devices
          3. Control voltage
          4. Line voltage
          5. Load
        B. Device designations
      II. Motor controllers
          A. Manual full-voltage starters
          B. Reversing manual starters
          C. Drum switches
          D. NEC requirements
          E. Maintenance
        III. AC magnetic starters
            A. Magnetic sticking
            B. Maintenance
            C. Thermal overload relays
          IV. AC magnetic reversing controllers and combination starters
              A. AC combination starters
              B. AC reduced voltage motor starters
              C. Part-winding starters
              D. Wye-delta magnetic starters
              E. Magnetic primary resistor starters
              F. Maintenance of reduced voltage starters
            V. Miscellaneous motor controls
                A. Pneumatic and motor-driven timing relays
                  1. Range required
                  2. Types
                  3. Coil voltage
                  4. Enclosure
                B. Control transformers
                C. Fuse block kits
                D. Limit switches
                E. Solenoids
                F. Foot switches
                G. Pressure float switches
                H. Solid State Logic
              VI. Multispeed AC motor starters
                  A. Squirrel-cage
                  B. Wound-rotor inductive
                  C. Torque characteristics
                    1. Constant
                    2. Variable
                    3. Constant horsepower
                  D. Synchronous motors
                    1. Starting
                    2. Braking
                    3. Converters
                    4. Semiautomatic synchronizing
                    5. Automatic application
                VII. Rheostats and controllers
                    A. Maintenance
                    B. Installations
                    C. Faceplate types
                    D. Drum controllers
                    E. Drum contactor controllers
                    F. Resistors for AC motors
                    G. Starting and speed-regulating rheostats for DC motors
                      1. Manual and automatic
                      2. Cleaning
                      3. Reversing contacts
                      4. Spring tension
                      5. Resistor replacement
                      6. Magnet coil
                      7. Checking
                      8. Installation
                    H. DC controllers
                  VIII. Solid-State control circuits
                      A. Silicon controlled rectifiers
                      B. Operation
                      C. Ratings and characteristics
                      D. Phase-control applications
                      E. Solid-state motor starters
                      F. Operation
                      G. Adjustable-speed drives
                    IX. Method of deceleration
                        A. Plugging
                        B. Jogging
                        C. Type SA brakes
                          1. Operation
                          2. Coil connection
                          3. Troubleshooting
                        D. Type DL shoe brakes
                        E. Motor brakes
                          1. Parts
                          2. Characteristics
                      X. Signaling systems - circuit classification
                          A. Detection
                          B. Control
                          C. Signaling
                        XI. Components of security/fire alarm systems
                            A. Control station
                            B. Power supplies
                            C. Contacts and conductive foil
                            D. Transmitter
                            E. Supplementary circuits
                          XII. National Electrical Code (NEC) requirements
                              A. NEC Article 725
                              B. NEC Section 300-21
                              C. NEC Article 110
                              D. NEC Article 310
                              E. NEC Sections 318-8 through 318-10
                            XIII. Maintenance of fire alarm systems
                                A. Relays
                                B. Pilot Lamps
                                C. Capacitors
                                D. Resistors and rheostats
                                E. Transistors
                                F. Overcurrent devices
                                G. Batteries
                                H. Wiring
                                I. Control cabinets
                                J. Field devices
                                  1. Noncoded manual stations
                                  2. Coded manual stations
                                  3. Automatic transmitters
                                  4. Heat detectors
                                  5. Rate-of-rise detectors
                                  6. Smoke detectors
                                  7. Horns and bells
                              XIV. Miscellaneous signaling systems
                                  A. Low-voltage controls
                                    1. Visual aids
                                    2. Fail-safe alarm systems
                                    3. Industrial applications
                                    4. Motel management
                                    5. Home protection
                                    6. Nurse call system
                                    7. Nursing homes
                                    8. Travel trailers and yachts
                                    9. Office use
                                    10. Modular housing
                                    11. Restaurants
                                  B. Signal and communication systems
                                    1. Electric chimes
                                    2. Intercom
                                    3. Telephone
                                    4. Bank alarms
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