In automation and control, PLC is an important control equipment. The compressor is a kind of compressed gases increased gas pressure or gas transportation machinery, application of a wide range. In the mining industry, metallurgical industry, machinery manufacturing, civil engineering, petrochemical industry, refrigeration and gas separation project and the defense industry, the compressor is essential for one of the key equipment. So common and important equipment in its use will have a wide variety of issues, the aging equipment, will transform the environment of these problems, how to find these problems and solve them this is my main content of the study.
This study focused on how to better control the PLC to solve the shortage of compressors, such as: PLC Anti-surge in the compressor control system of the large piston-type air compressor control system of the application, and so on. Less than the traditional control system, designed PLC control system, in order to better control the compressor system to make it more efficient, with the security operation.