Standard
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Introduces line
and low voltage switching circuits, manual and automatic controls and devices,
and circuits. Emphasis will be placed on switching circuits, manual and
automatic controls and devices, line and low voltage switching circuits, and
operation, application and ladder diagrams. Topics include: ladder and wire
diagrams, switching circuits, manual controls and devices, automatic controls
and devices, and application and operation of controllers and controls.
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Competency Areas: |
Hours: |
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Ladder and Wire Diagrams |
Class |
3 |
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Switching Circuits |
D. Lab |
2 |
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Manual Controls and Devices |
P. Lab/O.B.I. |
3 |
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Automatic Controls and Devices |
Credit |
5 |
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Application and Operation of Controllers and Controls |
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Prerequisite: |
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Corequisite: |
ELT 108, ELT 111, ELT 112 |
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Course Guide
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Competency |
After completing this section, the student will: |
Hours |
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Class |
D. Lab
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P. Lab/
O.B.I. |
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LADDER AND WIRE DIAGRAMS |
2 |
1
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4 |
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Drawing the diagram |
Describe the conventional procedures followed in drawing
the diagram. |
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Two wire circuit |
Draw a two-wire control circuit. |
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Three wire circuit |
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SWITCHING CIRCUITS |
3 |
1
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4 |
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Two wire switching circuit |
Connect and operate a motor and starter with a two wire
switching circuit. |
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Three wire switching circuit |
Connect and operate a motor and starter with a three wire
switching circuit. |
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Low voltage switching circuit |
Connect and operate a motor and starter on high voltage
with low voltage switching circuit. |
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MANUAL CONTROLS AND DEVICES |
5 |
2
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6 |
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Control circuit |
Install a low-voltage, push-button control circuit for a
three-phase AC motor. |
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Direction |
Reverse direction of an AC motor. |
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Speed indicators |
Install speed indicators. |
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AUTOMATIC CONTROLS AND DEVICES
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10 |
3
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8 |
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Controls and devices |
List control accessories available for
use with magnetic starters. |
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Electrically control a multi-speed motor. |
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Calculate heater sizes for motor protection. |
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Match NEMA starters to motors. |
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Install and troubleshoot a run and safety circuit. |
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Install a three-station control system for a motor and
starter. |
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APPLICATION AND OPERATION OF CONTROLLERS AND CONTROLS |
10 |
3
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8 |
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Install a control system for an AC motor. |
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List methods of braking an AC
motor. |
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Install a dynamic braking system. |
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Locate and identify problems in (troubleshoot) a control
panel and circuit. |
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Locate and identify problems in (troubleshoot) a
controller. |
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Suggested Resources
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Alerick/Herman;
Electric Motor Control (6th
ed.), Delmar Publishers, ISBN 0-8273-7644
Rockis/Mazur;
Electric Motor Controls (2nd
ed.),
American Technical Publishers ISBN
0-8269-1675-9
Rockis/Mazur;
Electric Motor Controls Workbook (2nd
ed.), American Technical Publishers ISBN
0-8269-1676-7
Wildi,
Theodore and De Vito, Michael J,; Control of Industrial Motors,
Lab-Volt, ISBN 2-89289-140-0
NEC 2002 Code, NFPA, Delmar Publishers ISBN 0-8776-5460-3
Electric Motor Control 1 LAP Package, Published by Amatrol, ISBN 17401.