BHM 4-20/24L- Permanent Magnet Variable Frequency Constant Pressure Centrifugal Pump is a reliable and efficient water pressure booster pump, using permanent magnet brushless motor, precision pressure sensor, combined with advanced electronic control technology, the intelligent frequency conversion, constant voltage speed regulation, energy saving and high efficiency are realized. Typical specifications are: Parameter Typical Value Model MKAWA BHM 4-20 VFD Pump Type Horizontal Multistage SS Booster Pump Control Integrated Variable Frequency Drive (VFD) Maximum Flow 4 m³/hr Maximum Head 20 m Motor Power Approximately 0.37–0.55 kW (depending on variant) Voltage 220V Single Phase or 415V Three Phase (model dependent) Pressure Control Constant Pressure using PID Feedback Signal 4–20 mA Pressure Transmitter Applications RO Plants, Hotels, Apartments, Process Water, Pressure Boosting Features Constant pressure operation Up to 30–60% energy savings compared to fixed-speed pumps Soft start and soft stop Dry-run protection Overload and over-voltage protection Low-noise operation Automatic sleep and wake-up function based on demand Recommended Pressure Transmitter Output: 4–20 mA Supply: 24 VDC Pressure Range: 0–6 bar for residential booster systems 0–10 bar for industrial and RO applications If you are designing a 1 Working + 1 Assist booster system, the VFD can regulate the lead pump using the 4–20 mA pressure feedback while the assist pump starts automatically when demand exceeds the capacity of the lead pump. If your application is for an RO plant, I can also provide: Complete VFD parameter settings PLC logic for 1W + 1 Assist operation Pressure transmitter wiring diagram (4–20 mA) Control panel schematic for the MKAWA VFD booster pump.
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