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INDUSTRIAL MOTOR CONTROL

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PREFACE:

The amount of knowledge an electrician must possess to be able to install and troubleshoot control systems in today’s industry has increased dramatically in recent years. A continuous influx of improved control components allows engineers and electricians to design and install even more sophisticated and complex control systems. Industrial Motor Control presents the solidstate devices common in an industrial environment. 

This is intended to help the student understand how many of the control components operate, such as solidstate relays, rectifiers, SCR drives for direct current motors, variable frequency drives for alternating current motors, and the inputs and outputs of programmable controllers. 

Although most electricians do not troubleshoot circuits on a component level, a basic knowledge of how these electronic devices operate is necessary in understanding how various control components perform their functions. The influx of programmable logic controllers into industry has bridged the gap between the responsibilities of the electrician and the instrumentation technician. 

Many industries now insist that electricians and instrumentation technicians be cross-trained so they can work more closely together. Industrial Motor Control helps fulfill this requirement. Many of the common control devices found throughout industry are also discussed from a basic instrumentation standpoint by providing information on analog sensing of pressure, flow, temperature, and liquid level.

 The sixth edition of Industrial Motor Control is the most comprehensive revision since the text was first published over twenty years ago. The chapter on motor installation has been updated to reflect changes in the 2008 National Electrical Code®, and a new unit that instructs students in basic troubleshooting techniques has been included. 

The chapters have been rearranged to present the information in a different order. This rearrangement was done to reflect recommendations made by instructors that use the text. Industrial Motor Control presents many examples of control logic and gives the student step-by-step instructions on how these circuits operate.

 There are examples of how ladder diagrams can be converted into wiring diagrams. This is the basis for understanding how to connect control circuits in the field. The concept of how motor control schematics are numbered is thoroughly discussed. Students are also given a set of conditions that a circuit must meet, and then that circuit is developed in a step-by-step procedure. 

Learning to design control circuits is a very effective means of learning how circuit logic works. It is impossible to effectively troubleshoot a control circuit if you don’t understand the logic of what the circuit is intended to do. Industrial Motor Control is based on the results of extensive research into content, organization, and effective learning styles. Short chapters help the student to completely understand the content before progressing to the next subject, and they permit the instructor to choose the order of presentation. Each chapter contains extensive illustrations, which have been designed for maximum learning. Color is used to help the student understand exactly what is being conveyed in a particular illustration.

 Industrial Motor Control, Sixth Edition, is a complete learning package that includes this comprehensive textbook, a hands-on Lab Manual, an Interactive Companion on CD, an Instructor’s Guide, and an Instructor’s e-resource. The Lab Manual offers practical hands-on circuits to be wired by the student. Each of the labs uses standard components that most electrical labora tories either have on hand or can obtain without difficulty. The Lab Manual lets students learn by doing..

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