Sensorless vector frequency converter
MFC 710 type

0,37 - 500 kW:   400V

15 - 800 kW:   500V, 690V


Product enquiry 


  • Three-phase power supply: 3x400V / 3x500V / 3x690V, 45 .. 60Hz
  • Output: 3x400V / 3x500V / 3x690V, 0 .. 400Hz
  • Advanced control modes: 
                   U/f (linear, sqare-law scalar), 
                   Vector mode (sensor or sensorless)
  • Removable operating panel with LCD alphanumeric display
  • Integrated Programmable Logic Controller (PLC)
  • Built-in "reeler-calculator"
  • Built-in pump or fan set controller
  • Integrated PID controller
  • Embedded communication module RS232/RS485 (Modbus)
  • Programmable fixed frequencies
  • Digital potentiometer function
  • Build-in incremental encoder interface (line driver 5V)
  • Elimination of resonance frequencies bands
  • Definable shapes and slopes of selected frequency characteristic (linear, "S"-shaped)
  • Allowable work with torque control
  • Automatic identification of motor parameters
  • Programmable control structure:
    • two customizable control variants: (A & B)
    • speed selector block: control panel, analog input, PID controller, digital potentiometer, function block,
    • torque selector block: analog inputs, function block,
    • run and direction control: control panel, digital input, function block,
    • programmable digital inputs: run, direction, run blockade, external trip, trip cancellation,
    • programmable digital outputs: ready, run, fault, warning, overtemperature of heatsink, given speed reaching, threshold speed reaching, current limit, function block,
    • programmable analog outputs: frequency, rotational speed, output current, voltage, loading of motor, function block.
  • Total work counter (hours)
  • Diagnostic and blockade system
  • Control panel protection with system of passwords
  • Embedded RFI filter (for up to 18,5 kW)
  • Memory for 4 motors parameters
  • Allowable use of default values for all parameters

Frequency converters 3x400V and 3x500V with power up to and including 18.5 kW have a built-in braking transistor as standard, which enables the connection of an optional braking resistor.

All other converters are equipped with a braking transistor only if it is clearly stated when ordering. It is very important because the braking transistor is assembled at the converter production stage and it is not possible to add it later.  


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pdf Download user's manual


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