General Description

VF-AS1 is a general purpose, high performance high torque drive for several critical and demanding applications in industry.


  • Wide range of power rating
    3-phase 400V class 0.75kW to 500kW
    3-phase 690V class 2.2kW to 630kW
  • High torque and large capacity
    150% overload for 60 seconds or 165% for 2 seconds
  • Reduce electromagnetic interference(EMI)
  • Easy operation
  • Flexibility with serial communication and various network options
  • Control algorithms for permanent magnet motors and induction motors
  • Enhanced functions in
    • multi-PID control
    • traverse and power-interruption-synchronized control
    • drooping, speed gain switching, zero speed lock, and dwell
  • Ambient temperature up to 60℃C with de-rated current
  • Built-in power removal safety function (compliant with EN954-1 category 3 and IEC/EN61508-1 SIL2)
  • C-tick, CE marking, UL, CSA


  • For low electromagnetic interference(EMI)
    Washing machines, treadmill, showcase refrigerators for stores, medical equipment, etc.
  • For simple setup
    Drilling machines, handling machines, conveyors, semiconductor production equipment, cutting machines, woodworking machinery, etc.
  • For high torque and large capacity
    Cranes, mining machinery, refrigerators
    presses, compressors, crushing machine
  • For flexibility
    Paper and film lines, printing machines, presses, coilers/uncoilers, etc.
  • Other general industry applications requiring variable torque and speed control of induction motors

For more information download the PDF brochure PDF