The overall framework of this book consists of three modules: relay control, PLC control and equipment operation and maintenance, which has the characteristics of outstanding focus and strong practicability. This paper analyzes the working principle, operation and maintenance principle of electrical control equipment in the factory, introduces new knowledge and technology, and demonstrates the cultivation of practical ability.

This book aims at cultivating technical application-oriented talents and is the main teaching material for electrical operation and control specialty. It can also be used as a teaching material for the maintenance of electrician training, and can also be used as a reference for teachers, students and field engineers.