Solutions for Water Supply by Dolycon Inverter

April 14, 2022

The water supply system is an indispensable part of the national production and life. The traditional water supply method covers large areas and causes serious water contamination. Meanwhile,  due to the inability to keep water pressure constant, some equipment are unable to work normally. Under the increasingly urgent situation of water supply quality, VVVF (Variable Voltage and Variable Frequency) technology provides a mature AC motor stepless speed control, and this constant pressure water supply solution become more and more recognized by the public.

The water supply system is installed a pressure sensor to convert the water pressure signal into a 4 ~20 mA current signal that is acceptable to the inverter. While the system is working, the pressure sensor detects its water pressure in time, the inverter receives the pressure signal, and the difference adjustment between actual pressure signal and given pressure signal constitutes a pressure closed-loop system. The inverter adjusts the frequency by PID output to change the speed of pump. However, the upper and lower limits of the frequency conversion pump operating speed limit the single pump to deal with the peak and low peak period of water consumption.

Inverter based on the issue above, extend the water supply-specific logic and ensure the pressure of water supply network is constant and meet needs of users.

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