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Designed for students with no previous experience in motor controls, UNDERSTANDING MOTOR CONTROLS, 3e introduces basic principles and progresses from learning about common motor control components to how they are used in motor control circuits. The new edition is packed with illustrations concerning troubleshooting circuits and offers thorough explanations of the basic types of meters and test equipment needed for troubleshooting control circuits. Written in accord with the National Electrical Code, Chapter 37 on the installation of motors has been completely updated and now offers an even stronger illustration of how overload heater sizes are actually selected. Using actual motor control components, hands-on laboratory experiments enable students to put what they learn into practice. These student-friendly experiments start with very simple circuits and progress to more complicated circuits involving the use of timing relays and an auto-transformer starter.
- Packed with new photographs and updated graphics that bring chapter concepts to life through detailed illustrations.
- Includes expanded coverage of pressure switches.
- Reflecting the latest developments from the field, the Third Edition features extended information on IEC and NEMA symbols.
- Increased coverage of troubleshooting equips students with the tools and knowledge to deal with issues they will face in real-world practice.
- Providing tools to help instructors maximize course success, the Instructor Resource site includes PowerPoint presentations, test banks, and an image gallery.
- Providing flexibility and accessibility, lab experiments are not based on a particular brand relay, timer, or other piece of equipment but can be constructed from common motor control components.
- Detailed examples show students how to convert a ladder or schematic diagram to a wiring diagram, which is the first step in learning how to connect a working circuit using a schematic diagram. This concept also helps students understand the logic of a circuit, which aids in learning troubleshooting techniques.
- Extremely student friendly, the text is written in an easy to read and understand level. Many practical illustrations explain in a step-by-step sequence how the logic of a circuit works -- ensuring thorough student understanding.
Section I: BASIC CONTROL CIRCUITS AND COMPONENTS.
1. General Principles of Motor Control.
2. Symbols and Schematic Diagrams.
3. Manual Starters.
4. Overload Relays.
5. Relays, Contactors, and Motor Starters.
6. The Control Transformer.
Section II: BASIC CONTROL CIRCUITS.
7. Start-Stop Pushbutton Control.
8. Multiple Pushbutton Stations.
9. Forward-Reverse Control.
10. Jogging and Inching.
11. Timing Relays.
12. Sequence Control.
Section III: SENSING DEVICES.
13. Pressure Switches and Sensors.
14. Float Switches and Liquid Level Sensors.
15. Flow Switches.
16. Limit Switches.
17. Temperature Sensing Devices.
18. Hall Effect Sensors.
19. Proximity Detectors.
21. Reading Large Schematic Diagrams.
22. Installing Control Systems.
Section IV: STARTING AND BRAKING METHODS.
23. Across-the-Line Starting.
24. Resistor and Reactor Starting for AC Motors.
25. Autotransformer Starting.
26. Wye-Delta Starting.
27. Part Winding Starting.
28. Direct Current Motors.
29. Single-Phase Motors.
Section V: WOUND ROTOR, SYNCHRONOUS, AND CONSEQUENT POLE MOTORS.
31. Wound Rotor Motors.
32. Synchronous Motors.
33. Consequent Pole Motors.
Section VI: VARIABLE SPEED DRIVES.
34. Variable Voltage and Magnetic Clutches.
35. Solid State DC Motor Controls.
36. Variable Frequency Control.
Section VII: MOTOR INSTALLATION.
37. Motor Installation.
Section VIII: PROGRAMMABLE LOGIC CONTROLLERS.
38. Programmable Logic Controllers.
39. Programming a PLC.
40. Analog Sensing for Programmable Logic Controllers.
Section IX: DEVELOPING CONTROL CIRCUITS AND TROUBLESHOOTING.
41. Developing Control Circuits.
Section X: LABORATORY EXERCISES.
"The sections on the various controls are good for the most part." "There is a wonderful number of schematics! My students are technically minded and that will help them picture what is really going on inside."
"Location and community needs dictate particular emphasis on certain areas of the Motor Control Industry; UNDERSTANDING MOTOR CONTROLS is a well-balanced text that should meet the needs of any area." "The questions are presented in a way that requires thought yet at the same time are not as though their content is out of bounds with the information within the particular unit."
Cengage provides a range of supplements that are updated in coordination with the main title selection. For more information about these supplements, contact your Learning Consultant.
The Instructor Resources commonly includes PowerPoint® presentations for each core textbook chapter, computerized test bank, Instructor’s Manual, and other text-specific resources.