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KD389F6 Special vfd for villa booster water supply system

389F6 series is a customizable constant pressure water supply frequency converter. It supports horizontal or vertical installation (default is horizontal installation). This series of products features precise constant pressure control, simple operation,  high stability and reliability.

Application scope

It is widely used in scenarios such as fire water supply and villa water supply.

Power range is from 0.4kW to 2.2kW, and the voltage is 1AC/220V.

IP54 protection grade

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Product features:

◆Automatic adjustment, unmanned operation: One-click start, the system runs automatically; automatic wake-up, automatic sleep; automatic adjustment of pumps to maintain constant pressure; automatic frequency adjustment for each pump to achieve the best energy-saving effect.

◆ Reliable protection and safe operation: With an IP54 protection rating, it is equipped with a complete set of water pumps, vfd and pipeline pressure protection functions, ensuring the long-term stable and reliable operation of the system.

◆ Rust and freeze prevention: More reliable. Regular operation of the pump even when it is not in use for a long time can prevent it from getting rusty or freezing, thus ensuring its normal operation.

◆Power failure restart: After power is cut off and then restored, it will automatically start running to ensure continuous water supply.

◆Constant pressure with precise and stable performance: The built-in dedicated PID function for water supply can achieve precise constant pressure, ensuring a stable water pressure; in the event of sudden changes in external water pressure, it can respond quickly to restore the water pressure promptly.

Technical Specifications:

ProjectExplanation
Load classMultiple motor pumps, pipeline pumps, submersible pumps, deep well pumps, etc.
StructureProtection levelIP54
Heat dissipation methodFan cooling
Input power supplyRated voltageSingle-phase 220V
Allowable variation rangeVoltage is allowed to vary by ±20%, and frequency is allowed to fluctuate by ±5%.
Control signalAnalog inputAnalog input CI:4~20mA
Keyboard operationPress and hold the "Programming" button for 3 seconds to set the parameters. Press and hold the "Up/Down" button for 3 seconds to set the pressure. In manual mode, press and hold the "up/down" button for 3 seconds to set the frequency.
Protection functionOvercurrent protection, overload protection, short circuit protection, ultra-high pressure protection, ultra-low pressure protection, water shortage protection, overvoltage protection, low voltage protection, heat dissipation protection, grounding protection, output phase loss protection, input phase loss protection, etc.
Display functionSeven-segment displayOperating frequency, operating current, set pressure, feedback pressure
Overload, phase loss, water shortage, over/under voltage, abnormal pressure, automatic mode, manual mode, online mode, operation, sleep, online.                                                                            Unit symbol: Mpa, A, V, Hz,BAR        
Installation environment requirementsOperating environmental temperature  -10~50°C, without direct sunshine.
Use environmental humidity  90%RH or less (non-condensing)
Operating environmentNon-corrosive, non-flammable, non-hygroscopic dust substances.
Vibration0.5gm Hereinafter
Altitude  ≤1000M: output rated power, >1000M: output derated

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