Description: Install, troubleshoot, and test electrical motors like the pros! UNDERSTANDING MOTOR CONTROLS, 2ND Edition uses a real-world systems approach to learning motor control devices. Starting with basic control circuits and components, thisbook covers all must-know applications and procedures to ensure your success in the more complex topics. From safety and development to operations and problem solving, UNDERSTANDING MOTOR CONTROLS, 2ND Edition prepares you for a career as an industrial electrician with a solid foundation in basic control circuits, sensing devices, solid-state controls, variable speed drives, programmable logic controllers (PLCs), and more. Product Benefits: - Code references had been updated throughout to reflect the 2011 NEC, preparing industrial electricians with the most up-to-date information available.
- Includes extended information on Control Transformers, Motor Nameplate Data, Hall Effect Sensors, and On-delay Timers.
- Enhanced with information concerning the operation of single-phase and three-phase motors, as well as more discussions on troubleshooting motors.
- Drawings and charts throughout the book have been updated and revised to depict the real world responsibilities of modern industrial electricians.
- Written for instructors who require streamlined, focused content, delivering essential material in a smaller, easy-to-understand format.
- Future Industrial Electricians will learn the language of the trade with the book's standard NEMA symbols and key 2011 National Electrical Code® information throughout the book.
- Beginning with clear explanations of the logic behind control systems, the book moves from very simple control circuits to more advanced circuits for organized, common-sense learning.
- Covers the basic control components such as limit switches, flow switches, and pressure switches, as well as all of the key areas of knowledge for industry professionals.
Table of Contents: Preface.
Safety.
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.
20. Photodetectors.
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.
30. Braking.
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.
42. Troubleshooting.
Section X: LABORATORY EXERCISES.
Appendix.
Glossary. |
