ET 130 - Conventional Controls

Credits: 3
Instructional Contact Hours: 3

Identifies control devices commonly used throughout industry and relates each device to the proper symbol that is used in the electrical drawings. Develops a thorough comprehension for the devices by describing the proper operation of a control circuit that is comprised of various components that are integrated together. Applies the subject material from lecture in the laboratory through the use of electro-pneumatic training boards. Uses drawings to construct control circuits, analyze the process, make revisions to wiring or set-up configurations, as necessary, and evaluate the proper operation of the control circuit. Credit may be earned in SKET 130 or ET130 but not both.

Prerequisite(s): ET 120 with a minimum grade of “C”.
Corequisite(s): None
Lecture Hours: 22.5 Lab Hours: 22.5
Meets MTA Requirement: None
Pass/NoCredit: No

Outcomes and Objectives

Recognize and explain the operation of electrical control devices.
1. Identify and describe the functionality of operator interface devices (e.g. pushbuttons, selector switches, etc.).
2. Identify and describe the operation and the components of a control relay, contactor, and motor starter.
3. Identify and describe the operation of common sensors used in industry (e.g. pressure switches, limit switches, proximity switches, temperature sensors, etc.). Differentiate between sensors and transducers used on industrial equipment.
4. Differentiate between the normally open and normally closed states for pushbuttons, relays, and sensors.
5. Identify and describe the operation of output devices (e.g. pilot lights, horns, heaters, etc.)
6. Explain the operation of timers and counters in control circuits.
7. Recognize and draw the schematic symbols for devices used in control circuits. Differentiate between different symbols, conventions, and terminology.
8. Determine the proper wire size and color for use in electrical wiring circuits per NFPA standards.
9. Explain the use and operation of disconnect switches and circuit breakers.
10. Differentiate between various fuse types and sizes for different applications.
Recognize and explain the operation of fluid power devices.
1. Identify and describe the operation of a solenoid.
2. Identify and describe the operation of a two position valve, three position valve, manifold, and cylinder.
3. Explain the operation and use of pressure regulators and flow control in fluid power applications.
4. Recognize and draw the schematic symbols for devices used in fluid power circuits. Differentiate between different symbols, conventions, and terminology.
Analyze electrical control and fluid power circuits.
1. Apply knowledge about electrical control and fluid power devices to their integration into a control circuit.
2. Predict and discuss the proper operation of electrical control and fluid power circuits.
3. Modify the design of control circuits to accomplish different tasks.
Relate knowledge about electrical devices to control systems.
1. Explain the process of risk assessment and the safety components necessary to comply with safety requirements.
2. Differentiate between open loop and closed loop systems. Explain the various forms of PID control and predict the response of the system to various changes in parameters.
3. Recognize and discuss the use of PLC systems in machine and process control.
4. Explain the transfer of data in an industrial application. Differentiate between different protocols and network systems.
5. Recognize and explain the integration of failsafe design practices.
6. Recognize and explain the need for effective panel layouts, the use of wiring terminals, and the importance of preventative maintenance in industrial control systems.
7. Apply NEC and NFPA standards to control circuits.
Conduct laboratory experiments to reinforce lecture material
1. State, comprehend, and comply with safety precautions when working on electrical equipment.
2. Construct circuits using electrical and pneumatic components on laboratory equipment. Predict and analyze the proper operation of electrical control and fluid power circuits. Troubleshoot and make wiring modifications, if necessary, to obtain the desired results of the control schematic.
3. Measure electrical values of current, voltage, and resistance in circuits.
4. Develop troubleshooting techniques.