Guide to Industrial Electric Motor Control: Article Index

Part 1 Introduction

• 1 General Principles of Electric Motor Control
• 2 Fractional and Integral Horsepower Manual Motor Starters
• 3 Magnetic Line Voltage Starters

Part 2 Circuit Layout, Connections, and Symbols

• 4 Symbols
• 5 Interpretation and Application of Simple Wiring and Elementary Diagrams

Part 3 Control Pilot Devices

• 6 Push Buttons and Control Stations
• 7 Relays
• 8 Contactors
• 9 Timing Relays
• 10 Pressure Switches and Regulators
• 11 Float Switches
• 12 Flow Switches
• 13 Limit Switches and Proximity Control
• 14 Phase Failure Relays
• 15 Solenoid Valves
• 16 Temperature Switches

Part 4 Basic Control Circuits

• 17 Two-Wire Controls
• 18 Three-Wire and Separate Controls
• 19 Hand-Off Automatic Controls
• 20 Multiple Push-Button Stations
• 21 Interlocking Methods for Reversing Control
• 22 Sequence Control
• 23 Jogging (Inching) Control Circuits
• 24 Time-Delay, Low-Voltage Release Relay

Part 5 AC Reduced Voltage Starters

• 25 The Motor and Starting Methods
• 26 Primary Resistor-Type Starters
• 27 Autotransformer Starters
• 28 Part Winding Motor Starters
• 29 Automatic Starters for Star-Delta Motors
• 30 AC Solid-State Reduced Voltage Controller

Part 6 Three-Phase, Multispeed Controllers

• 31 Controllers for Two-Speed, Two-Winding (Separate Winding) Motors
• 32 Two-Speed, One-Winding (Consequent Pole) Motor Controller
• 33 Four-Speed, Two-Winding (Consequent Pole) Motor Controller

Part 7 Wound Rotor (Slip Ring) Motor Controllers

• 34 Wound Rotor Motors and Manual Speed Control
• 35 Push-Button Speed Selection
• 36 Automatic Acceleration for Wound Rotor Motors
• 37 Automatic Speed Control for Wound Rotor Motors
• 38 Solid-State Adjustable Speed Controller for AC Wound Rotor Motors

Part 8 Synchronous Motor Controls

• 39 Synchronous Motor Operation
• 40 Push-Button Synchronizing
• 41 Timed Semiautomatic Synchronizing
• 42 Synchronous Automatic Motor Starter

Part 9 Direct-Current Controllers

• 43 About DC Motors
• 44 Use of Reduced Voltage for Starting
• 45 Across-the-Line Starting
• 46 Compensating and Definite Time Control Starting
• 47 Solid-State Adjustable Speed Control

Part 10 Methods of Deceleration

• 48 Plugging
• 49 Electric Brakes
• 50 Dynamic and Regenerative Braking
• 51 Electric and Electronic Braking

Part 11 Motor Drives

• 52 Direct Drives / Pulley Drives
• 53 Gear Motors
• 54 Variable-Frequency Mechanical Drives
• 55 AC Adjustable Frequency Drives
• 56 Magnetic Clutch and Magnetic Drive
• 57 DC Variable-Speed Control—Motor Drives
• 58 Programmable and Motion Control

Part 12 Troubleshooting

• 59 Motor Startup and Troubleshooting Basics
• 60 Troubleshooting Techniques

Section A: Motor Types and Line Diagrams

Section B: Power Supplies

GLOSSARY

(Note: all unlinked articles above are Under Construction.)