ELTR 1235 Syllabus

Subject Code

ELTR

Course Number

1235

Course Title

Industrial Controls II

Prerequisites

None

Corequisites

None

Terms Offered

Credit Hours

Course Description

This course offers continued instruction on automatic controls, control devices, and control circuits. Topics include motor load, torque, and power quality requirements; reduced voltage starting circuits; DC power sources; semiconductor input devices; semiconductor amplication and switching devices; photoelectric semiconductors, fiber optics, and light-based applications; solid-state relays and starters; motor drives; and preventative and predictive maintenance. Students will gain practical experience in designing and wiring various motor control circuits.

Course Outcomes

Motor Load, Torque, and Power Quality Requirements

  • Explain why the type of load and torque requirements for a motor must be understood.
  • Describe the different classifications of motor loads.
  • Define "arc flash" and "arc blast" and how to minimize their effects.
  • Define and describe the types of motor torque.
  • Define voltage fluctuation and describe different voltage fluctuation problems.
  • Explain the difference between open circuit transition and closed-circuit transition.

Reduced-Voltage Starting Circuits

  • Explain why a reduced-voltage starting method may be used instead of full-voltage starting.
  • Explain why reduced-voltage starting is used for three-phase induction motors.
  • Explain how an autotransformer reduced-voltage starting method reduces the amount of voltage and current to an AC motor during starting.
  • Observe an autotransformer reduced-voltage starting method.
  • Define part-winding starting and explain how it reduces the amount of voltage and current to an AC motor during starting.
  • Observe a part-winding reduced-voltage starting method.
  • Explain how a wye-delta reduce-voltage starting method reduces the amount of voltage and current to an AC motor during starting.
  • Observe a wye-delta reduced-voltage starting method.
  • Describe the considerations for selecting a starting method and describe the advantages and disadvantages of each.

DC Power Sources

  • Define DC power supply and describe the different types of rectifiers used in single-phase DC power supplies.
  • Define filter and describe the different types of filters.
  • Explain how a shunt regulator regulates the output voltage in a DC power supply.
  • Explain how to troubleshoot a half-wave rectifier.
  • Explain how to troubleshoot a full-wave rectifier.
  • Explain how to troubleshoot a zener diode voltage regulator.

Semiconductor Input Devices

  • Define thermistor and describe the classes of thermistors.
  • Describe photoconductive cells (photocells) and give examples of how they are used.
  • Define and describe pressure sensors.
  • Define and describe flow detection sensors.
  • Define Hall effect sensor and explain the Hall effect.
  • Define proximity sensor and explain how it operates.
  • Explain the difference between and inductive proximity sensor and a capacitive proximity sensor.
  • Define ultrasonic sensor and explain how it operates.
  • Explain the difference between a direct mode ultrasonic sensor and a diffused mode ultrasonic sensor.

Semiconductor Amplification and Switching Devices

  • Define and describe transistors.
  • Define operational amplifier (op amp) and describe its symbol.
  • Define field-effect transistor (FET) and list the different types.
  • Define and describe a metal-oxide semiconductor field-=effect transistor (MOSFET).
  • Explain how to troubleshoot an insulated gate bipolar transistor.
  • Describe and define solid-state switches.
  • Define and describe silicon-controlled rectifiers (SCRs).
  • Explain how an SR is used to control DC motor base speed.
  • Define and describe triacs.
  • Define unijunction Transistor (UJT).

Photoelectric Semiconductors, Fiber Optics, and Light-Based Applications

  • Describe photoelectric devices.
  • Define and describe light-emitting diodes (LEDS).
  • Define photelectric sensor.
  • Define and describe fiber optics.
  • Define photoelectric scanning and list the most common scanning techniques.
  • Explain response time and sensitivity adjustment.

Solid-State Relays and Starters

  • Define relay and solid-state relay (SSR).
  • Explain how SSRs are used to control different circuits.
  • Identify and compare electromechanical relays (EMRs) and solid-state relays (SSRs).
  • Explain how to troubleshoot a solid-state relay (SSR) that fails to turn off a load or fails to turn on a load.
  • Define and describe solid-state motor starters and solid-state motor starting.
  • Describe AC motor drives and list their main sections.
  • Explain how to control motor speed and torque using an AC motor dive.
  • Describe motor frequencies and pulse width modulation (PWM).
  • Explain how to test an AC motor drive, motor, and load.
  • Explain how to measure voltage and current in a motor drive circuit.

Preventative and Predictive Maintenance

  • Define preventive maintenance (PM) and describe the types of maintenance work.
  • Define and describe alignment and misalignment.
  • Explain and describe alignment and misalignment.
  • Define bearing and describe the different types of bearings.
  • Define and describe flexible belt drives.
  • Describe pulley misalignment.
  • Explain how to test for failing conductor insulation.
  • Define predictive maintenance (PDM) and list the different types.
  • Define and describe commo PDM procedures.