PLC在变频调速多泵并联供水系统中的应用

Application of PLC in the Supplying Water System Made up of Parallel-connected Pumps with Frequency Conversion Timing

为使供水设备获得高可靠性、低成本 ,介绍了在硬件结构和软件编程上充分开发PLC资源 ,用低点数的PLC巧妙地实现了恒压供水设备的多功能要求。经过多年实验 ,证明了变频调速多泵并联供水装置是一种节能、节水、功能完备的供水设备。该设备在高楼供水和采暖锅炉补水中得到广泛应用 ,颇受用户的欢迎。

To make the equipment of water supply get the high reliabilities and low costs, the full development of PLC resources was introduced in the hardware structures and software programs and meeting the multifunctional requirements of the constant pressure water supply equipment with the low number of dots of PLC. The experiments of many years proved that the supplying water system made up of parallel-connected pumps with frequency conversion timing is a kind of equipment with lots of functions which can economize energies and water . This kind of equipment is widely used in the water supply of high buildings and water supply of heating boiler and very popular with the consumers.