Now in its second edition, Industrial Control Electronics continues to provide readers with an extraordinarily comprehensive understanding of instrumentation, process control, and servomechanisms - all in a single volume! In addition to detailed discussion of modern components, circuits, devices and control techniques used in today's industrial automated systems, this edition features two all-new chapters on DC and AC variable speed drives plus a generic approach to PLCs that employs the Allen-Bradley SLC-500 as a sample. As in the first edition, the book begins with an overview of the control loop while subsequent sections allow readers to explore individual elements of the loop in depth. This logical organization allows the book to be used effectively in a variety of programs, including: Electromechanical Technology, Instrumentation (Process Control) Technology, Automated Manufacturing Systems (AMS), Electronics Technology, and Industrial Maintenance.