ISMT 160 Electric Motors, Generators, and Controls

Students will explore the basic principles of electric motor and generator control (both manual and magnetic), principles of ladder logic, standard control circuits such as start/stop and forward/reverse, as well as troubleshooting techniques. topics will include an introduction to electric motor control, manual motor control and overload protection, control transformers, control ladder logic, control relays and motor starters, introduction to troubleshooting, systems troubleshooting, reversing motor control, automatic input devices, and basic timer control: on-delay and off-delay. Prerequisite: Instructor approval.

Credits

2

Semester Contact Hours Lecture

15

Semester Contact Hours Lab

30

General Education Competency

[GE Core type]

ISMT 160Electric Motors, Generators, and Controls

Please note: This is not a course syllabus. A course syllabus is unique to a particular section of a course by instructor. This curriculum guide provides general information about a course.

I. General Information

Department

Trade & Industry

II. Course Specification

Course Type

Program Requirement

General Education Competency

[GE Core type]

Credit Hours Narrative

2

Semester Contact Hours Lecture

15

Semester Contact Hours Lab

30

Grading Method

Letter grade

Repeatable

N

III. Catalog Course Description

Students will explore the basic principles of electric motor and generator control (both manual and magnetic), principles of ladder logic, standard control circuits such as start/stop and forward/reverse, as well as troubleshooting techniques. topics will include an introduction to electric motor control, manual motor control and overload protection, control transformers, control ladder logic, control relays and motor starters, introduction to troubleshooting, systems troubleshooting, reversing motor control, automatic input devices, and basic timer control: on-delay and off-delay. Prerequisite: Instructor approval.

IV. Student Learning Outcomes

Upon completion of this course, a student will be able to:

• Explain the importance of the equipment ground connection
• Describe the function of five common standards associated with electrical control
• Describe ten basic rules of electrical safety
• Describe the purpose of the lockout/tagout system used in industry
• Describe the operation of three-phase power
• Describe the two most common three-phase voltage systems
• Explain the function of neutral
• Describe the operation of grounded and ungrounded systems
• Describe two devices used to disconnect power to a circuit
• Explain why time-delay fuses are used with motor starting circuits
• Describe three important factors to consider with overcurrent protection devices
• Describe the operation of a three-phase motor
• Describe the operating data on a motor's nameplate
• Define service factor and explain its importance
• Explain why dual-voltage motors should be run on the highest available voltage
• Describe five functions of motor control
• Describe the four basic requirements of a typical motor installation
• Define motor controller and motor starter
• Describe the functions of two categories of motor starters
• Describe the functions of two types of manual starters
• Describe the operation of a manual motor starter
• Define low-voltage protection and describe its importance
• Describe how low-voltage protection is accomplished in a manual starter
• Describe the function of three types of overloads and give an application of each
• Describe the operation of two types of thermal overloads
• Describe the operation of a magnetic overload
• Describe the operation of a transformer and give its schematic symbol
• Define turns ratio and describe how it is calculated
• Describe how the TURNS ratio determines the secondary voltage of a transformer
• Describe the functions of the four basic components of an electrical control circuit
• Describe the function of an electrical schematic diagram
• Describe the function of a control transformer
• Describe the operation of a control transformer and give its schematic symbol
• Describe how to test a transformer
• Describe how to size a transformer
• Describe the operation of a separate control circuit
• Describe the three steps of a control process
• Describe the function of an indicator lamp and give an application
• Describe the operation of a pushbutton switch and give its schematic symbol
• Describe the operation of a selector switch and give its schematic symbol
• Describe the function of a ladder diagram
• Describe the function of four components of a ladder diagram
• Describe six rules of drawing a ladder diagram
• Describe How to Determine the Operation of a Circuit Given a Ladder Diagram
• List Six Elements of Control Logic
• Describe the operation of and logic and give an application
• Describe the operation of or logic and give an application
• Describe the operation of not logic and give an application
• Describe the operation of nor logic and give an application
• Describe the operation of NAND logic and give an application
• Describe the function of a control relay and give an application
• Describe the operation of a control relay and give its schematic symbol
• Describe the operation of two types of control relays and give an application of each
• Describe how detached symbology is used to show a control relay on a ladder diagram
• Describe the operation of memory logic and give an application
• Describe the operation of a magnetic motor starter
• Describe the operation of a two-wire motor control circuit and give an application
• Describe the operation of a three-wire motor control circuit and give an application
• Describe the function of a push-to-test pilot light and give an application
• Describe the operation of a push-to-test pilot light and give its schematic symbol
• Describe the three methods of testing a component and give an application of each
• Describe how to test an indicator lamp
• Describe how to test a manual switch
• Describe how to test a control relay
• Describe how to test a motor contactor
• Describe how to test an overload relay
• Describe how to test the windings of a 3-phase motor with a digital multimeter
• Describe the function of four common electrical test instruments used in troubleshooting
• Describe how to select a DMM to measure voltage for a given application
• Describe how to use a voltage tester (wiggy)
• Describe how to use a clamp-on ammeter
• Describe How to Use a Continuity Tester
• Describe a six-step troubleshooting sequence
• Describe four methods of systems level troubleshooting and give an advantage of each
• Describe five types of in-circuit component tests
• Describe how to test and analyze circuit signals
• State the NEMA and IEC Standard for reversing the rotation of a three-phase motor
• List two common control methods used to reverse a three-phase motor
• Describe the function and operation of a drum switch
• Describe the function and operation of a reversing magnetic motor starter
• Describe the function of interlocking control and give an application
• Describe three interlocking methods used in reversing motor control
• Describe the function of manual and automatic modes and give an application of each
• Describe the operation of two types of motor jogging circuits
• Describe the operation of a hand-off-automatic motor control circuit
• Describe the operation of a limit switch and give its schematic symbol
• Describe the operation of a float switch and give its schematic symbol
• Describe the operation of a pump control circuit
• Describe the operation of a pressure switch and give its schematic symbol
• Describe how to test an automatic input switch
• Describe the function of a sequence control circuit and give an application
• Describe the operation of a sequence control
• Describe the function of a time-delay relay and give an application
• Describe the function of two types of timer relays and give an application of each
• Describe the operation of an on-delay timer relay and give its schematic symbol
• Describe the operation of a timer relay in an unloaded motor start circuit
• Describethe operation of an off-delay timer relay and give its schematic symbol
• Describe the operation of a time-delay relay in time-driven sequencing
• Describe how to test a timer relay
• Demonstrative Outcomes:
• Perform a Lockout/Tagout
• Use a voltmeter to verify supply voltage
• Use a digital multimeter to check the condition of a fuse
• Connect a dual-voltage three-phase motor for low voltage operation
• Connect a dual-voltage three-phase motor for high voltage operation
• Connect and operate a simple motor control circuit
• Start and stop a motor using a manual starter
• Set the trip level of a bimetallic overload
• Select the correct heaters for a nema overload
• Calculate the TURNS ratio of a transformer
• Calculate the secondary voltage of a transformer
• Connect and operate a control transformer
• Test a control transformer
• Size a control transformer
• Connect and operate a basic electrical control circuit that uses a pushbutton switch
• Connect and operate a basic electric control circuit using a selector switch
• Draw a ladder diagram of a control circuit
• Determine the operation of a control circuit given a ladder diagram
• Connect and operate a control circuit given a ladder diagram
• Connect and operate an AND Logic Circuit
• Connect and operate an OR Logic Circuit
• Connect and operate a NOT Logic Circuit
• Connect and operate a NOR Logic Circuit
• Connect and operate a NAND Logic Circuit
• Design a multiple start/stop pushbutton station control circuit
• Connect and operate a control relay ina circuit
• Connect and operate a memory logic circuit
• Connect and operate a magnetic motor starter connected to a three-phase motor
• Connect and operate a two-wire motor control circuit
• Connect and operate a three-wire motor control circuit
• Design a multiple operator station three-wire control circuit
• Connect and operate a three-wire control circuit with a push-to-test pilot light
• Test an indicator lamp
• Test a manual switch
• Test a control relay
• Test a motor contactor
• Test an overload relay
• Test the windings of a 3-phase motor with a digital multimeter
• Test the windings of a control transformer with a digital multimeter
• Select and use a DMM to measure voltage for a given application
• Select and use a voltage tester (wiggy) for a given application
• Select and use a clamp-on ammeter for a given application
• Select and use a continuity tester for a given application
• Perform and analyze circuit signal tests
• Use the Symptom and Cause Troubleshooting Method to isolate a bad component
• Use the Output-Back Troubleshooting Method to isolate a bad component
• Use the Half-Split Troubleshooting Method to isolate a bad component
• Use the Shotgun Troubleshooting Method to isolate a bad component
• Troubleshoot a 2-Wire Control System
• Troubleshoot a 3-Wire Control System
• Connect and operate a drum switch to reverse a motor
• Connect and operate a reversing magnetic motor starter to reverse a motor
• Design a motor reversing circuit that uses a drum switch and a magnetic motor starter
• Connect and operate a reversing motor circuit with mechanical and auxiliary contact interlocking
• Troubleshoot a reversing motor control circuit
• Design a reversing motor control circuit that uses pushbutton interlocking
• Connect and operate a control circuit to jog a motor
• Connect and operate a forward/reverse jog control circuit
• Troubleshoot a circuit that has manual and automatic modes
• Connect and operate a hand-off-automatic motor control circuit
• Design a hand-off-automatic motor control circuit
• Connect and operate a limit switch
• Design an overhead door motor
• Connect and operate a pump control circuit
• Connect and operate a pressure switch
• Design a pump control circuit that includes H-O-A Operation
• Test an automatic input switch
• Connect and operate a sequence control circuit
• Troubleshoot a sequence control circuit
• Design a sequence control circuit
• Connect and operate an on-delay timer circuit
• Design a control circuit to perform an unloaded start of a motor
• Connect and operate an off-delay timer circuit
• Design a motor control circuit to perform time-driven sequencing
• Test a timer relay
• Troubleshoot an On-Delay timer circuit
• Troubleshoot an Off-Delay timer circuit

V. Topical Outline (Course Content)

VI. Delivery Methodologies