The water supply system plays a key role in the production and life of all walks of life. If the reliable, safe, and stable operation of the water supply system can be ensured, all walks of life must be concerned. The application of advanced PID technology and frequency conversion technology to the water supply field has become the current mainstream in the water supply field; in the water supply system, if the user's water supply needs to change, the traditional solution is to change the valve opening change, but this is possible It will cause insufficient or excessive water supply pressure, which is easy to cause waste of resources and potential safety hazards. It is particularly important to use frequency conversion technology in some water supply systems where the water consumption changes greatly, the water pressure control is high, and the flow rate is completely determined by the user. This article introduces an easy-to-drive ED3100 series 15KW frequency converter plus multiple pump control cards to realize the application of one to three variable frequency constant pressure water supply in a school's water supply system in Xi'an.

 

Field application situation:

Summary:

 

It has become the consensus of more and more people to drive the water pump for constant pressure water supply through the frequency converter, because it has impeccable advantages: First, the variable frequency constant pressure water supply can automatically maintain a constant pressure for 24 hours, and automatically start the standby pump according to the pressure signal , Stepless pressure adjustment. Secondly, the frequent start and stop of the pump is avoided, and the start is smooth, which reduces the start shock of the motor water pump and increases the service life of the motor water pump. Thirdly, using variable frequency constant pressure water supply, the system can automatically detect and control the motor speed according to the actual consumption of the user to achieve the effect of energy saving. Finally, the protection function of the variable frequency constant pressure water supply system is complete