Abstract：The control of the diaphragm pump all uses the relay control,in which the control precision is low,and the operational reliability is poor.To solve the above problem,PLC control in reciprocating diaphragm pump is adopted.The PLC examines the signal which reed pipe transmits and controls the electromagnetic valve′s opening and closing so that to change the piston′s displacement.Hydraulic system use PLC to control electromagnetic valves thus to control the oil chamber volume and diaphragm displacement.The OMRON CPM2A is taken as an example to introduce PLC control system of reciprocating diaphragm pump.As it is proved,it can increase the precision and the reliability of control,reduce the rate of malfunction,and enhance the life expectancy.
张洪生；解海；师秦晓. GMB200-2.5往复式隔膜泵的PLC控制系统[J]. 排灌机械工程学报, 2007, 25(4): 54-56.
ZHANG Hong-sheng, XIE Hai, SHI Qin-xiao. PLC control system of the GMB200-2.5 of reciprocating diaphragm pump. Journal of Drainage and Irrigation Machinery Engin, 2007, 25(4): 54-56.
