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In order to realize the unmanned automatic operation of the heat-exchanging station, Rockwell Micro2080 PLC, it’s expansion modules and MCGS are utilized to design the automatic control system. Composition structure of the system is designed and hardware configuration is implemented. The special analogue signal processing module is designed to realize the information obtaining of pressure, temperature, valve opening, frequency converter frequency and so on. The MCGS human-machine interface is used to display the heat-exchanging parameters in real time, and the system parameter setting and operation control are carried out. The automatic water supply and constant pressure control is realized through the switching of the power supply pump and the frequency conversion pump. The frequency of the circulating pump and the opening degree of the electric valve can be conveniently set on the MCGS. The system has been applied to the real-time monitoring of heat-exchanging station, and the optimal operation of unattended system has been realized.

Auto Control System Design of the Heat-exchanging Station with Rockwell Micro2080 and MCGS