MASTER SYLLABUS

2020-2021

A.	Academic Division: Business, Industry, and Technology

B.	Discipline: Electronic Engineering Technology

C.	Course Number and Title: EMMT2150 Motor Controls

D.	Course Coordinator: Jonathan Dewitt

Assistant Dean: Toni Johnson, PhD

Instructor Information:

Name:	Click here to enter text.

Office Location:	Click here to enter text.

Office Hours:	Click here to enter text.

Phone Number:	Click here to enter text.

E-Mail Address	Click here to enter text.

E.	Credit Hours: 2

Lecture: 1 hour

Laboratory: 2 hours

F.	Prerequisites: None

G.	Syllabus Effective Date: Fall, 2020

Textbook(s) Title: None

Workbook(s) and/or Lab Manual: None

J.	Course Description: A study of the methods and devices used to control and protect DC and AC motors on industrial machinery. The student will understand, develop, interpret, and troubleshoot ladder diagram circuits. The student will gain experience of DC Series, Shunt and Compound motors, single-phase motors, 3- motors, Stepper motors, Servos, and universal motors. The student will learn about OSHA safety regulations regarding Lockout/Tagout procedures and safe shut down procedures. The student will also wire control circuits that utilize soft-start techniques and dynamic braking techniques.

K.	College-Wide Learning Outcomes

College-Wide Learning Outcome	Assessments - - How it is met & When it is met
Communication – Written
Communication – Speech
Intercultural Knowledge and Competence
Critical Thinking
Information Literacy
Quantitative Literacy

L.	Course Outcomes and Assessment Methods:

Upon successful completion of this course, the student shall:

Outcomes	Assessments – How it is met & When it is met
Identify, read, design, build and troubleshoot various relay and motor control circuits utilizing the different control devices required for correct operation of the desired circuit.	Homework, quizzes, labs throughout the semester and the midterm and final exam
Identify, describe and troubleshoot various overload protect circuits used in motor control circuits.	Homework, quizzes, labs throughout the semester and the midterm and final exam
Identify the proper NEMA enclosure type of use for a given electrical application.	Homework, quiz and exams. (week 3, 7, and 15)
Identify and describe the differences between a three-phase Wye and a three-phase Delta motor.	Homework, quiz, labs and exams. (week 6, 7, and 8)
Identify, read, design, build and troubleshoot different types of DC and AC motor reversing circuits.	Homework, quizzes, labs throughout weeks 4-10 and the midterm and final exam
Identify, describe, built, test and troubleshoot various soft-start DC and AC motor control circuits	Homework, quizzes, labs throughout weeks 11 and 12 and the final exam
Identify, describe, built, test and troubleshoot various dynamic and passive braking systems used in DC and AC motor control circuits.	Homework, quizzes, labs throughout weeks 13 and 14 and the final exam.
Convert a motor control circuit to a PLC program.	Homework, a quiz, and a lab during weeks 14 & 15 and the final exam
Use DVMs, clamp on ammeters, tachometers, Meggers and current transformers to troubleshoot motor control circuits	Throughout the semester in labs.
Use DVMs, clamp-on-ammeters, tachometers, torquemeters, and wattmeters to determine power factor, starting/stopping torque, inrush current, and running current.	Throughout the semester in labs.

M.	Topical Timeline (Subject to Change):

Squirrel cage motors

Single-phase windings, split-phase, and capacitor start motors.

3 phase motors

AC reversing circuits

DC series, shunt, and compound motors.

DC reversing circuits

Braking torque

Braking methods

Plugging

Motor application categories

Speed control of a DC motor.

Speed control of an AC motor.

Accelerating and decelerating circuit logic

Good preventive maintenance programs

Using test instruments.

Motor failures

Remarking motor leads

N.	Course Assignments:

Labs:

Given the motor control diagram the student will be able to:

Wire, test and troubleshoot a three-phase motor reversing full-voltage starter circuit, with jogging circuit.

Wire, test and troubleshoot a DC series motor full-voltage starter circuit.

Wire, test and troubleshoot a DC shunt motor full-voltage starter circuit.

Wire, test and troubleshoot a DC shunt motor full-voltage reversing circuit.

Wire, test and troubleshoot a DC compound motor full-voltage reversing circuit.

Wire, test and troubleshoot a three-phase, primary resistor, 2-step, reduced voltage starter.

Wire, test and troubleshoot a three-phase, primary resistor, 3-step, reduced voltage starter.

Wire, test and troubleshoot a three-phase, autotransformer, 2-step, reduced voltage starter.

Wire, test and troubleshoot a DC shunt motor reduced-voltage, 2-step starter circuit, using current relay acceleration.

Wire, test and troubleshoot a DC shunt motor reduced-voltage, 2-step starter circuit, using a CEMF accelerating relay.

Wire, test and troubleshoot a DC shunt motor reduced-voltage, 2-step starter circuit, using timed acceleration.

Wire, test and troubleshoot a DC shunt motor reduced-voltage, 3-step starter circuit, using series current relays.

Wire, test and troubleshoot a DC shunt motor reduced-voltage, 3-step starter circuit, using a CEMF accelerating relays.

Wire, test and troubleshoot a three-phase motor full-voltage starter circuit with dynamic braking.

Wire, test and troubleshoot a DC shunt motor full-voltage starter circuit with dynamic braking.

Wire, test and troubleshoot a DC shunt motor full-voltage starter circuit with a field accelerating and decelerating relay.

Reading Assignments:

Mechanical Improvements	Chap 4, pg 73-75

Manual Contactors vs. Manual Starters	Chap 4, pg. 83

Need For Overload Protection	Chap 4, pg. 83

Proper Fusing	Chap 4, pg. 87-88

NEMA Selection	Chap 4, pg. 89

Types of Overload Protection	Chap 6, pg. 129

Overload Selection	Chap 6, pg. 132

Three-Phase Motors	Chap 9, pg. 212

Dual Voltage Motors	Chap 9, pg. 214

Wye And Delta Dual Voltage Motors	Chap 9, pg. 214

Reversing Three-Phase Wye And Delta Motors	Chap 9, pg. 216

Split-Phase Motors	Chap 9, pg. 216

Split-Phase Motors	Chap 9, pg. 216

Capacitor Motors	Chap 9, pg. 218

Capacitor Motors	Chap 9, pg. 220

Reversing DC Motors	Chap 9, pg. 222

Interlocking Methods	Chap 9. pg. 224

Reasons For Reduced Voltage Starting	Chap 15, pg. 407

Reduced Voltage Starting And The DC Motor	Chap 15, pg. 407

Reduced Voltage Starting Methods	Chap 15, pg. 407

Methods of Braking	Chap 16, pg. 439

Braking Torque	Chap 16, pg. 441

Braking Methods Advantages And Disadvantages	Chap 16, pg. 437-448

Plugging	Chap 16, pg. 442

Applications	Chap 16, pg. 448

Speed Control of DC Motors	Chap 16, pg. 456

Speed Control of AC Motors	Chap 16, pg. 460

Accelerating And Decelerating Circuits	Chap 16, pg. 460-465

Preventive Maintenance Program	Chap 17, pg. 471 (intro)

Test Instruments	Chap 17, pg. 474

Checking Fuses	Chap 17, pg. 478

Testing The Control Transformer	Chap 17, pg. 480

Troubleshooting Electric Motors	Chap 17, pg. 480-485

Remarking The Connections	Chap 17, pg. 485-493

Locating A Circuit	Chap 17, pg. 494

Checking Capacitors	Chap 17, pg. 494

O.	Recommended Grading Scale:

NUMERIC	GRADE	POINTS	DEFINITION
93–100	A	4.00	Superior
90–92	A-	3.67	Superior
87–89	B+	3.33	Above Average
83–86	B	3.00	Above Average
80–82	B-	2.67	Above Average
77–79	C+	2.33	Average
73–76	C	2.00	Average
70-72	C-	1.67	Below Average
67–69	D+	1.33	Below Average
63-66	D	1.00	Below Average
60-62	D-	0.67	Poor
00-59	F	0.00	Failure

P.	Grading and Testing Guidelines:

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Q.	Examination Policy:

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R.	Class Attendance and Homework Make-Up Policy:

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S.	Classroom Expectations:

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T.	College Procedures/Policies:

Important information regarding College Procedures and Policies can be found on the syllabus supplement located at

http://catalog.ncstatecollege.edu/mime/download.pdf?catoid=5&ftype=2&foid=3