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Electrical Control for Machines, 7th Edition

Diane Lobsiger

  • Copyright 2016
  • {{checkPublicationMessage('Published', '2021-11-11T00:00:00+0000')}}
Starting At £33.59 See pricing and ISBN options
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Electrical Control for Machines 7th Edition by Diane Lobsiger
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Overview

More current, comprehensive, and powerful than ever, the new Seventh Edition of ELECTRICAL CONTROLS FOR MACHINES delivers a thorough introduction to the range of technologies found in today's electrical machine controls. Significant revisions have been made to this edition to reflect the latest practices and trends in industry. Completely updated, the circuit diagrams and the descriptions of the circuits illustrate a more modern representation of the controls circuits. The text also expands on the power and control circuitry required to operate electrical machinery. While it discusses the trend away from relay control to PLC control, the text maintains solid coverage of relay circuits. Its emphasis on the critical importance of worker and equipment safety in industrial settings includes a detailed explanation of the risk assessment process and a safety relay circuit. In addition, the text now includes international equipment specifications, reflecting the dramatic impact of globalization and integration of businesses on the way industries function.

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Meet the Authors

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Diane Lobsiger

Diane Lobsiger is an electrical instructor at Delta College in University Center, Michigan. She instructs students in the Skilled Trades-Electrician program, Wind Turbine Technology program, and Pre-Engineering program. In her prior work as a senior manufacturing controls engineer for 24 years, she gained a wealth of knowledge and extensive experience in the design, troubleshooting, specification writing, and approval of machine controls systems. Her expertise includes relay control systems, programmable logic controllers, human-machine interfaces, servo systems, adjustable frequency drives, and fluid power systems. She earned a Bachelor of Science in electrical engineering from Auburn University and a Master of Science in electrical engineering from Michigan State University. She recently obtained her Secondary Teaching Certification in mathematics and physics from Saginaw Valley State University. In her free time, she can usually be found fishing at her cabin.

What's New

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  • Expanding on the power and control circuitry required to operate electrical machinery, the Seventh Edition describes the bus system and the use of bus plugs as a means of power distribution throughout a factory. Included transformer calculations and the sizing of transformers helps technicians understand what values to expect (voltage and current) when troubleshooting equipment. Explanations of insulation classifications, conductor ampacity, and conductor color code help readers identify and select proper wiring for a given application. The text also covers the trend toward 24 VDC as the standard control voltage for equipment.
  • While the text discusses the trend away from relay control to PLC control and the advantages to using PLCs to control machinery, it still offers thorough coverage of relay circuits to provide basic understanding of control circuits along with knowledge that may be easily transferred to an understanding of PLC circuits. Expanded coverage and clarification is now included on such key concepts as PLC scan, addressing schemes, power supply functions, memory, I/O status, and peripheral devices. The use of Ethernet as a common protocol for control systems is also highlighted.
  • New explanations of variable frequency drives are also included. As the cost of electrical components decline, the use of drives to control motors is continually becoming more affordable.
  • New coverage of the normal state for switching devices helps readers gain a thorough understanding of this concept--which is required to understand circuit diagrams and the proper operation of the devices.
  • An introduction to fail-safe designs illustrates how this practice is critical to the proper functionality of safety circuits, quality control systems, and processes by ensuring the integrity of switching devices.

Features

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  • Delivering coverage that is both comprehensive and current, ELECTRICAL CONTROL FOR MACHINES emphasizes modern control systems that contain mature technologies, expanding technologies, and new technologies.
  • Extremely reader friendly, the text presents information in a logical and systematic sequence that facilitates learning, taking readers from basic principles to advanced applications while limiting the jargon to terms widely accepted by control manufacturers and equipment users.
  • System design issues and troubleshooting techniques are applied to real-world applications that reflect the range of technologies found in today's industrial systems.
  • Highly practical and realistic examples feature the use of common equipment and procedures, enabling readers to readily apply what they have learned to solve real-world problems.
  • Concise text explanations, insightful diagrams, and engaging photographs make it easy to read, understand, and learn from the book.
  • End-of-chapter review questions underscore key points while a comprehensive glossary helps readers understand and master key terms.
  • Quick reference appendices offer instant access to frequently used electrical symbols, measurement units, rules of thumb, electrical formulas, electrical codes and standards, power factor corrections, and more.
  • Recommended web sites at the end of each chapter link readers with additional information, manufacturers, and professional organizations.

Table of Contents

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1. TRANSFORMERS AND POWER SUPPLIES.
Control Transformers. Transformer Regulation. Sizing a Transformer. Operating Transformers in Parallel. Temperature Rise in a Transformer. 60 Hz Versus 50 Hz Operation. Constant Voltage Regulators. Power Supplies for Control Voltage. Uninterruptible Power Systems. Circuit Diagram. Insulation Classifications. Conductor Ampacity. Conductor Color Code.
2. FUSES, DISCOUNNECT SWITCHES, AND CIRCUIT BREAKERS
Protective Factors. Fuse Construction and Operation. Fuse Types. Peak Let-Thru Current (IP) and Ampere Squared Seconds (I2t). Voltage and Frequency Surges. Circuit Breaker Types. Programmable Motor Protection. Electrical Metering and Voltage Protection. Selecting Protective Devices. Ground Fault Circuit Interrupter.
3. CONTROL UNITS FOR SWITCHING AND COMMUNICATION.
Oil-Tight Units. Push-Button Switches. Selector Switches. Heavy-Duty Switches. Indicating Lights. General Information on Oil-Tight Units. Circuit Applications. Annunciators. Light-Emitting Diodes. Membrane Switches.
4. RELAYS.
Control Relays and Their Uses. Timing Relays. Latching Relays. Plug-In Relays. Contactors.
5. SOLENOIDS.
Solenoid Action. Solenoid Force and Voltage. Low Voltage. Overvoltage. AC Solenoids on DC. DC Solenoids on AC. 50- and 60-Cycle Solenoids. Solenoid Temperature Rise. Valve Operation. Circuit Applications. Variable Solenoids. Proportional Valves. Servo Valves.
6. TYPES OF CONTROL.
Open-Loop Control. Closed-Loop Control. Proportional Control. Proportional-Integral. Proportional-Integral-Derivative.
7. MOTION CONTROL DEVICES.
Importance of Position Indication and Control. Limit Switches-Mechanical. Limit Switch Symbols. Circuit Applications. Proximity Limit Switches. LED Indicators. Solid-State Outputs. Detection Range. Hysteresis. Attenuation Range. Speed. Magnet-Operated Limit Switch. Vane Switches. Linear Position Displacement Transducers. Angular Position Displacement Transducers. Use of AC Synchronous and DC Stepping Motors. Servo Positioning Control. Sensing Theory. Flow Sensors.
8. PRESSURE CONTROL.
Importance of Pressure Indication and Control. Types of Pressure Switches. Circuit Applications.
9. TEMPERATURE CONTROL.
Importance of Temperature Indication and Control. Selection of Temperature Controllers. Electronic Temperature Controller (Pyrometer). Controller Outputs. Additional Terms. Temperature Switches (Thermostats). Temperature Sensors. Circuit Applications.
10. TIME CONTROL.
Selected Operations. Types of Timers. Synchronous Motor-Driven Timers. Solid-State Timers. Circuit Applications.
11. COUNT CONTROL.
Electromechanical Control Counter. Circuit Applications. Solid-State Counters.
12. CONTROL CIRCUITS.
Placement of Components in a Control Circuit. Control Circuit Examples.
13. MOTORS AND DRIVES.
DC Motors-Principles of Operation. DC Motors. AC Motors-Theory of Operation. Polyphase Squirrel-Cage Induction Motors. Variable Frequency Drives. Single-Phase Motors. Resistance Split-Phase Motors. Capacitor Start Motors. Permanent Split-Capacitor Motors. Shaded-Pole Motors. Brushless DC Motors.
14. MOTOR STARTERS.
Contacts and Overload Relays. Across-the-Line (Full-Voltage) Starters. Reversing Motor Starters. Multispeed Motor Starters. Additional Across-the-Line Starter Circuits. Reduced-Voltage Motor Starters. Solid-State Motor Starters. Starting Sequence.
15. INTRODUCTION TO PROGRAMMABLE CONTROL.
Primary Concepts of Relay Control. Introduction to Programmable Logic Controllers. Programmable Logic Controller Concepts. PLC Input/Output (I/O). Processor. Memory. Power Supplies. Programming. Examine On/Examine Off. Programming Devices. Data Communications. Converting from Relay Logic to PLC.
16.INDUSTRIAL DATA COMMUNICATIONS.
Overview. Industrial Information Technology Architecture. Data Communication Network Concepts. Data Transmission. Industrial Data Highway. Network Topologies. Industrial Networks. Data Transfer Rate. Ethernet and the Information Highway. Transmission Media. Troubleshooting Networks. Open Systems Versus Proprietary Systems. Network Layers. Typical Network Systems.
17. QUALITY CONTROL.
Defining Quality and Quality Control. Electrical and Electronic Circuits Used in Quality Control. Quality Achieved Through Machine and Process Monitoring. Process Tolerance (Standards). Information Systems. Maintaining Quality.
18. SAFETY.
Worker Safety. Machine Safety. Diagnostic Systems. Machine Safety Circuit. Programmable Controllers in Safety. Other Safety Conditions.
19. TROUBLESHOOTING.
Safety First. Analyzing the Problem. Major Trouble Spots. Equipment for Troubleshooting. Motors. Troubleshooting a Complete Control Circuit. Troubleshooting the Programmable Logic Controller. Electronic Troubleshooting Hints.
20. DESIGNING CONTROL SYSTEMS FOR EASY MAINTENANCE.
Design Considerations. Diagrams and Layouts. Locating, Assembling, and Installing Components.

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  • ISBN-10: 0357191684
  • ISBN-13: 9780357191682
  • RETAIL £33.59

  • ISBN-10: 1285169050
  • ISBN-13: 9781285169057
  • RETAIL £41.99

  • ISBN-10: 1305546091
  • ISBN-13: 9781305546097
  • RETAIL £53.00

  • ISBN-10: 0357671163
  • ISBN-13: 9780357671160
  • RETAIL £94.99
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Supplements

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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.

FOR INSTRUCTORS

Lab Manual for Lobsiger's Electrical Control for Machines, 7th

ISBN: 9781285169057
The Laboratory Manual is a valuable tool designed to enhance your lab experience. Lab activities, objectives, materials lists, step-by-step procedures, illustrations, and review questions are commonly found in a Lab Manual.

FOR STUDENTS

Lab Manual for Lobsiger's Electrical Control for Machines, 7th

ISBN: 9781285169057
The Laboratory Manual is a valuable tool designed to enhance your lab experience. Lab activities, objectives, materials lists, step-by-step procedures, illustrations, and review questions are commonly found in a Lab Manual.