Electrical control and PLC

Author: Zhou Jun
Publisher:
Publish Date: 2005-06-01
Features: This textbook is divided into three parts: Part 1 introduces the composition, working principles, and control system design of conventional circuit breakers—contactor control systems. The content covers common low-voltage electrical components, the composition and working principles of electrical control system circuit diagrams, analysis of electrical control systems for typical equipment, and the design of simple electrical control systems. Part 2 discusses the application of Programmable Logic Controllers (PLCs) in mechanical equipment control. The content includes the system composition and working principles of PLCs, the design and development of PLC application programs, methods of using computer programming software to develop PLC applications, and the introduction and application of the 5-Step standard programming method. Part 3 covers equipment speed control systems, including the composition and working principles of DC and AC speed control systems. It introduces two types of speed control systems—single-loop speed control systems and zero-static-error speed control systems—and methods for speed control of asynchronous motors.