Fuji Low Voltage VSD AQUA Series


FRENIC AQUA is the first slim type inverter dedicated to a variety of applications in water supply and wastewater treatment systems from Fuji Electric.

Specific functions to prevent damage on existing systems and new energy saving functions are installed as standard, positioning FRENIC AQUA as a leading high performance inverter in the pumping application market.


  • Wide capacity range from 0.75 kW to 710 kW
  • IP21 & IP55 with same dimension
  • DCR Reactor and EMC filter built-in up 90 kW. Built-in EMC filter for all capacities
  • Overload capability 110%
  • Torque Vector control
  • Modbus RTU, BACnet MS/TP, Metasys N2; integrated as standard
  • Large LCD display, 19 languages + user customizable language
  • Specific macros for common fan and compressor applications
  • Customizable Logic (mini PLC), 14 steps, possibility to manage digital and also analog signals
  • Real Time Clock (RTC)
  • 4 PID sets
  • Unit conversion function (kPa, bar, l/min, etc.)
  • Fire mode (forced operation)
  • Catch spinning motor
  • Password function
  • New energy saving functions (sleep mode)
  • Multipump control (up to 9 pumps with one inverter)
  • Anti jam function
  • Pipe fill mode
  • Extension cable for remote operation (CB-…S)
  • Battery (OPK-BP)
  • Full 24/7 service and parts availability from CSE Uniserve is available for all Fuji FRENIC AQUA drives.
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    • The Fuji FRENIC-AQUA series provides energy saving functionality for pumps, eliminating ineffectual operations by adjusting the amount of water properly to produce a significant effect both on electricity conservation and cost reduction.

The water market, including water purification plants and wastewater plants have continued to grow in recent years. Using a large volume of water, cost reductions largely depend on how efficiently water can be managed.
Fuji FRENIC AQUA achieves above average results by reducing the amount of water to be used. The reduction in power consumption in water transfer and supply allows for real and significant significant cost reductions. The key is the dedicated inverter which controls both pump and motor.

Wide Variation in Model Capacity

Models can be selected from two model types.


      • Standard type (EMC filter built-in type)

0.75 to 710kW (Protective structure IP21 or IP55 can be selected between 0.75 and 90kW.)

      • DCR built-in + EMC filter built-in type

0.75 to 90kW (Protective structure IP21 or IP55 can be selected between 0.75 and 90kW.)


Optimum Control by Energy Saving Functions


      • Linearization function


      • Temperature difference constant control and pressure difference constant control


      • Energy saving functions including wet-bulb temperature presumption control


      • Automatic energy saving operation


Dedicated Pump Control Function Provided as Standard


      • 4PID control


      • Cascade control


      • Mutual operation


      • Control of maximum starts per hour


      • Dry pump detection


      • Deceleration time for check valve protection


      • Slow flowrate function


      • End of curve detection


      • Boost function


      • Acceleration and deceleration at initial stage

Slim Body
The first slim body design among the Fuji Electric inverters. The size is the same between IP21 and IP55 (the first in the industry).


User Friendly & Useful Functions



      • Fire Mode (forced operation)


      • Customized logic


      • Pick up operation function


      • Anti-jam


      • Torque vector control


      • Password function


      • Real time clock


      • User friendly, useful key pad



Stand Alone
The inverter can be installed independently. No control panel is required.

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