EBOOK - Electric Motor Control 9th Edition (Stephen L. Herman)


Electric Motor Controlprovides beginning students with a practical approach to motor control. The textbook discusses electrical and mechanical components and how they are connected to control different types of motors. Many different types of control circuit and illustrations are discussed. The text contains a wealth of practical information that will apply to almost any industrial application.


PREREQUISITES AND USE

The text assumes that students have knowledge of basic electrical theory and common series and parallel circuits.Electric Motor Controlhas been used successfully for both formal classroom training and self study. It is used extensively in preapprentice and indentured apprentice training programs and in organized journeyman electrician classes. The practical approach to motor control makes this a very useful handbook on the job for installing, monitoring, and maintaining control systems.

Section 1 Introduction 1
UNIT 1 General Principles of Electric Motor Control 3
UNIT 2 Fractional and Integral Horsepower Manual Motor Starters 17
UNIT 3 Magnetic Line Voltage Starters 23
Section 2 Circuit Layout, Connections, and Symbols 49
UNIT 4 Symbols 51
UNIT 5 Interpretation and Application of Simple Wiring
and Elementary Diagrams 63
Section 3 Control Pilot Devices 79
UNIT 6 Push Buttons and Control Stations 81
UNIT 7 Relays 87
UNIT 8 Contactors 95
UNIT 9 Timing Relays 103
UNIT 10 Pressure Switches and Regulators 113
UNIT 11 Float Switches 117
UNIT 12 Flow Switches 123
UNIT 13 Limit Switches and Proximity Control 127
UNIT 14 Phase Failure Relays 135
UNIT 15 Solenoid Valves 139
UNIT 16 Temperature Switches 143
Section 4 Basic Control Circuits 147
UNIT 17 Two-Wire Controls 149
UNIT 18 Three-Wire and Separate Controls 153
UNIT 19 Hand-Off Automatic Controls 159
UNIT 20 Multiple Push-Button Stations 163
UNIT 21 Interlocking Methods for Reversing Control 165
UNIT 22 Sequence Control 173
UNIT 23 Jogging (Inching) Control Circuits 181
UNIT 24 Time-Delay, Low-Voltage Release Relay 187
Section 5 AC Reduced Voltage Starters 191
UNIT 25 The Motor and Starting Methods 193
UNIT 26 Primary Resistor-Type Starters 199
UNIT 27 Autotransformer Starters 205
UNIT 28 Part Winding Motor Starters 211
UNIT 29 Automatic Starters for Star-Delta Motors 217
UNIT 30 AC Solid-State Reduced Voltage Controller 223
Section 6 Three-Phase, Multispeed Controllers 231
UNIT 31 Controllers for Two-Speed,Two-Winding (Separate Winding) Motors 233
UNIT 32 Two-Speed, One-Winding (Consequent Pole) Motor Controller 239
UNIT 33 Four-Speed,Two-Winding (Consequent Pole) Motor Controller 247
Section 7 Wound Rotor (Slip Ring) Motor Controllers 253
UNIT 34 Wound Rotor Motors and Manual Speed Control 255
UNIT 35 Push-Button Speed Selection 261
UNIT 36 Automatic Acceleration for Wound Rotor Motors 263
UNIT 37 Automatic Speed Control for Wound Rotor Motors 269
UNIT 38 Solid-State Adjustable Speed Controller for AC Wound Rotor Motors 275
Section 8 Synchronous Motor Controls 279
UNIT 39 Synchronous Motor Operation 281
UNIT 40 Push-Button Synchronizing 287
UNIT 41 Timed Semiautomatic Synchronizing 291
UNIT 42 Synchronous Automatic Motor Starter 295
Section 9 Direct-Current Controllers 303
UNIT 43 About DC Motors 305
UNIT 44 Use of Reduced Voltage for Starting 311
UNIT 45 Across-the-Line Starting 315
UNIT 46 Compensating and Definite Time Control Starting 319
UNIT 47 Solid-State Adjustable Speed Control 325
Section 10 Methods of Deceleration 333
UNIT 48 Plugging 335
UNIT 49 Electric Brakes 343
UNIT 50 Dynamic and Regenerative Braking 347
UNIT 51 Electric and Electronic Braking 353
Section 11 Motor Drives 361
UNIT 52 Direct Drives and Pulley Drives 363
UNIT 53 Gear Motors 369
UNIT 54 Variable-Frequency Mechanical Drives 373
UNIT 55 AC Adjustable Frequency Drives 377
UNIT 56 Magnetic Clutch and Magnetic Drive 385
UNIT 57 DC Variable-Speed Control—Motor Drives 391
UNIT 58 Programmable and Motion Control 397
Section 12 Troubleshooting 413
UNIT 59 Motor Startup and Troubleshooting Basics 415
UNIT 60 Troubleshooting Techniques 427
APPENDIX A Motor Types and Line Diagrams 441
APPENDIX B Power Supplies 443
GLOSSARY 445
INDEX 453

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