Constant Pressure Frequency VFD Pump Controller For Submersible Water Supply Pump

ACI Constant Pressure Water Supply Pump Dedicated Frequency Converter

The constant pressure water supply dedicated frequency converter is a frequency conversion speed control device designed specifically for constant pressure water supply systems. By adjusting the speed of the water pump motor, it achieves a constant water supply pressure and meets the water demand under different working conditions

The dedicated frequency converter for constant pressure water supply monitors the pressure of the pipeline network in real time through pressure sensors, converts the pressure signal into an electrical signal, and feeds it back to the frequency converter. The frequency converter automatically adjusts the output frequency and controls the speed of the water pump motor based on the deviation between the set pressure and the actual pressure. When the water consumption increases, the pressure in the pipeline decreases, the frequency converter increases the output frequency, the pump speed increases, and the water supply increases; When the water consumption decreases, the pressure in the pipeline increases, the frequency converter reduces the output frequency, the pump speed slows down, and the water supply decreases, thereby maintaining a constant water supply pressure.

Key Functions & Features:

1. Constant voltage control
   Through PID control algorithm, precise control of water supply pressure is achieved, with a small range of pressure fluctuations, meeting high-precision water supply requirements.
2. Multi pump switching
   Support the soft start and rotation operation of multiple water pumps, balance the running time of each pump, and extend the service life of the equipment.
3. Sleep and wake-up
   When there is low water usage or no one uses water at night, the frequency converter can control the water pump to enter a sleep state; When the pressure drops to the set value, the water pump will automatically wake up and operate, achieving energy saving.
4. Fault protection
   It has protection functions such as overcurrent, overvoltage, undervoltage, overload, short circuit, phase loss, overheating, etc., to ensure the safe operation of the system.
5. Communication interface
   Provide communication interfaces such as RS485, Modbus, CAN, etc., which can be connected to the upper computer or PLC to achieve remote monitoring and centralized management.

Technical Specifications:

1. 1. High precision pressure control
   Adopting high-performance PID control algorithm, the pressure control accuracy can reach ± 0.01MPa, ensuring stable water supply pressure.
2. 2. Wide range speed regulation
   Wide output frequency range (0-50Hz or higher), suitable for the speed regulation requirements of different water pumps.
   3. Energy saving and efficient
   Automatically adjust the speed of the water pump based on actual water consumption to avoid prolonged operation at power frequency, resulting in significant energy-saving effects, generally saving 20% -50% of energy.
   4. Stable and reliable
   Using high-quality components and advanced control technology, it has strong anti-interference ability, stable and reliable operation, and long service life.
   5. Easy installation and maintenance
   Compact structure and easy installation; Equipped with fault self diagnosis function, maintenance is simple and fast.

Applications:

• 1. Residential community water supply: meets the constant pressure water supply needs of different floors such as high-rise residential buildings and villas.
  2. Commercial building water supply: providing stable water supply pressure for hotels, shopping malls, office buildings, etc.
  3. Industrial water supply: suitable for circulating water, cooling water and other water supply systems in industrial places such as factories and mines.
  4. Agricultural irrigation: To achieve constant pressure water supply for farmland irrigation systems and improve irrigation efficiency.
  5. Municipal water supply: As a secondary pressurization device, it supplements the pressure of the municipal pipeline network to ensure water supply for high-rise users.

GuangDong Zhufeng Electric Co.,LTD established in 2004, is a national high-tech and energy save enterprise with approval by National Development and Reform Commission. Focusing on the development and production and sale of products of “energy saving and control speed and variable speed” , Zhufeng has been a very good supplier for energy saving and automation control solutions . With it’s own brands: “ACI”,“ZFENG”, Zhufeng has developed DLT series products including vector and universal variable frequency drive, servo system, energy saving cabinet, industrial power saver, soft starter etc. Applications including ceramic, machinery, petrochemical, metal, textile, food, papermaking, cement, water supply, plastic injection, central air-conditioning, smart building,etc.