PIC programming can directly drive solenoid valve contactor

PIC programming can direct drive contactor electronic engineering world electromagnetic solenoid valve experts, the origin of the PLC in s, automobile production line automatic control system is essentially composed of relay control device. When car every retrofit led directly to the redesign and installation of relay control device. With the development of production, vehicle model update cycle more and more short, so, relay control device will need to frequently redesign and installation, time-consuming, work, material fee, even hindered the update cycle shortened. Programming is convenient to modify the program; Convenient maintenance adopts modular structure; Reliability is higher than the relay control device; Volume is less than the relay control device; Data can be directly sent to the management computer; Costs to compete with relay control device; Input can be ac V. V A above can direct output to ac drive solenoid valve contactor, etc. ; When extending the original system as long as a small changes; At least could extend to the user program memory capacity K. In the digital equipment corporation ( 12月) Gm in the United States, developed the first PLC automatic assembly line, a success. This new type of industrial control device with its simple, convenient operation, high reliability, flexible, small volume, long service life, and a series of advantages, other industrial sectors in the United States application quickly. The years, has been successfully applied in food and beverage, metallurgy and paper industry. The emergence of a new type of industrial control device, also attaches great importance to by the rest of the world. Introduced the new technology from the United States, Japan quickly developed Japan first PLC. Years, western European countries have developed their first PLC. Our country began to develop from years, started in industrial application. The first page of the first page, pp