Application of PLC in Automatic Control System of Constant Pressure Water Supply
Kang Zhang · Coal Technology · 2009
The composition of water supply automatic control system with PLC and inverters were described.The control methods of pumps switch and constant pressure water supply,and the realization of system protection were also described.With the development of frequency control of motor speed technology,the frequency constant pressure water supply system has replaced the traditional methods of water supply,it has widely been applied in the mining enterprises and municial water supply system.