Design of constant pressure water supply system for a residential district based on PLC

The stability, reliability and economy of water supply system directly affect the normal work and life of the users, and it also reflects the management level of the water supply system. According to the energy saving principle of the frequency conversion and energy saving of water supply system, the design scheme of the automatic control system of the upper computer with PLC as the controller and the frequency converter is presented. From the hardware selection, circuit design, the lower computer control program, the upper computer monitor screen and so on to make a detailed demonstration and design. Through on-line debugging of the constant pressure water supply system, the system has the advantages of strong stability, reliability, operation convenience, good monitoring and so on.