Form： 2019/7/19Browse：49

With the rapid development of modern electronic industry, programmable logic controller (PLC) and frequency converter (VVF) are more and more widely used in various industrial fields, and their performance indicators are further improved. They are fully applicable to the workplaces of railway transportation industry. The traditional control system of gantry crane uses various contactors, relays, resistors and other components. The failure rate of the system caused by electrical equipment is higher. The application of PLC system can effectively solve these problems, such as the improvement of mechanical failure and the reduction of the service life of gantry crane.

Form： 2019/7/19Browse：46

The plywood machine is an important equipment in rubber hose industry. The quality of metal wire plywood directly affects the quality of rubber hose. The joint stock machine is composed of motion controller, servo controller and motor, frequency converter and other detection switches.

Form： 2019/7/19Browse：32

This paper introduces the problems encountered in the application of GE electronic control system in container yard bridge, and puts forward the reform plan aiming at improving the system performance.