ELT 252 Motors & Controls

Course Description

Enables the student to study, construct, test, and evaluate basic industrial control systems, including AC/DC motors, stepper motors, power sources, generators, tachometers, line diagrams and logic functions. Covers safety standards and preventive maintenance.

Competencies

  1. Describe the cause and effect of electrical shock.
  2. Review and practice measures to prevent electrical shock.
  3. List and observe special precautions necessary when dealing with motors and controllers.
  4. Explain the construction and uses of industrial switching components (manually operated switches, mechanically operated switches, solenoids, electromagnetic relays, solid-state relays).
  5. Understand   the   design   and   installation   of industrial power supplies (linear voltage regulators, switching voltage regulators, emergency power supplies, and three-phase power supplies).
  6. Test and analyze the characteristics of AC and DC motors (series motor, compound motor, shunt motor, universal motor, induction motor, synchronous motor, and stepper motor).
  7. Test and analyze the characteristics of armature current, field current, and load characteristics (series generators, shunt generators, separately excited generators, and generator regulators).
  8. Recognize and analyze the effects of series field troubles on motor current and R.P.M.
  9. Recognize and analyze the effects of shunt motors (open field, shorted field).
  10. Diagnose troubles in field control circuits and armature circuits.