一、概述湖北省宜昌市机床工业公司生产的YD81—100型金属打包液压机,经过多次改型之后,产品质量和性能有了很大的提高。但是由于电气控制仍然采用传统的继电控制方式,因而和国外先进电控技术相比,还存在一定的差距。继电控制,由于电器元件多,逻辑布线复杂,尤其是接点多,因而故障在所难免。就 YD81—100型金属打包液压机而言,通过螺钉联接的接点就有三百多个,这样多的接点只要有一个接点松动或接触不良,就会形成故障,影响整机的性能。同 First, an overview Yichang City, Hubei Province Machine Tool Industry Company YD81-100 metal-clad hydraulic press, after many modifications, product quality and performance has been greatly improved. However, due to the electrical control still uses the traditional relay control method, compared with foreign advanced electric control technology, there is still a certain gap. Relay control, due to the electrical components and more complex logic routing, especially contacts and more, so failure is inevitable. YD81-100 metal packing hydraulic machine, the connection through the screw there are more than 300 contacts, so many contacts as long as there is a loose contact or poor contact, it will form a failure, affecting the performance of the machine. with