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Low voltage 3 Phase Variable Frequency Drive

Categories 3 Phase Variable Frequency Drive
Place of Origin: China
Brand Name: Hedy
Certification: UL,CE
Model Number: HD700-20D
MOQ: 100
Price: Negotiate
Delivery Time: 2 weeks
Payment Terms: 30%TT in advance,70%before delivery
Supply Ability: 500 thousand
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    • Product Details
    • Company Profile

    Low voltage 3 Phase Variable Frequency Drive

    DC Low voltage three / Single Phase Variable Frequency Drive 50Hz / 60Hz

    Quick Detail:

    • Advanced motor control algorithm
    • High performance open loop vector control
    • Optimal V/F mode
    • Excellent ramp slope control
    • Fast autotune (less than one minute)
    • Overload: 150% rated output current, one minute
    • Low frequency torque: 0.5Hz: 100% rated torque
    • 1Hz: 150% rated torque


    The main hardware features:

    • Dual CPU processing, more precise control
    • Using the latest generation IGBT
    • 0.4kW~7.5kW with standard inner brake unit
    • Inner EMC filter with breakpoint design, convenient for access and disconnection, meet different application requirements
    • PCBA coating process, increase environment adaptability
      Unique control terminals: simple electronic switch set to complete the conversion between source and sink of I/O terminals
    • Reference (current) loose, trip or not could be selected
    • IGBT thermal design
    • Wireless fan block design, easy to replace or maintain
    • Connecting auxiliary fan makes the drive suitable for worse environment

    The main function features:

    • Simple parameters, easy to use
    • Low DC voltage operation mode(400V)
    • AVR
    • Switching frequency automatic adjustment
    • Catch spinning function
    • DC injection braking
    • Jump frequency control function
    • Powerful electronic potentiometer function, adjust reference conveniently
    • Standard MODBUS-RTU
    • 4 preset (decided by control terminals)
    • Bias performance can be achieved by related terminals


    Input Power

    Input Voltage Uin

    200V (−10%)~240V (+10%) 1/3 PH

    380V (−10%)~480V (+10%) 3PH

    500V (−10%)~690V (+10%) 3PH

    Input Frequency

    50/60Hz (±2Hz)

    Maximum Supply Imbalance


    Power Output

    Output Voltage


    Output Frequency


    Main Performance Function

    Voltage Control

    V/F, Open loop Vector Control

    Switching Frequency


    Adjust Speedrange

    Open loop vector -1:100, V/F mode -1:50

    Start Torque

    0.5Hz: 100% rated torque, 1Hz: 150% rated torque

    Torque Accuracy


    Reference resolution

    Digit- 0.01Hz, Analogue- 0.1%×Max. frequency

    Acce. & Dece. rate


    Voltage Boost



    E, G type: 150% rated output current, 1 minute

    P type: 110% rated output current, 1 minute


    4 types: V/F (user can program) and ramp (2.0 power, 1.7 power, 1.2 power)

    DC Braking

    Injection frequency: 0.0%~100.0% Max. frequency

    Injection current: 0.0%~300.0% rated current

    Injection time: 0.00s~60.00s

    Dynamic Brake

    Brake rate: 0.0%~100.0%


    Jog frequency: 0.00Hz~maximum frequency

    Jog acceleration rate: 0.1s~600.0s

    Jog interval time: 0.1s~600.0s


    16 preset speeds (decided by control terminals)


    Maintain the rated output voltage when the input power supply voltage changed

    Special Function


    For textile machine control

    Simple PLC

    Onboard PLC

    Length Control

    Winding control

    PID Control

    Process control (reference close loop control)

    Advanced Function Blocks

    2 logic control blocks, 1 binary selector, 2 threshold control blocks, 3 variable selectors

    Control Terminal

    Reference Source

    Digit: Keypad, motorized pot (E-Pot), preset speed, pulse, comms.

    Analogue: AI1: 0V~10V, 0(4) mA~20mA;

    AI2: 0V~10V

    Operating Mode

    Keypad, Control terminal, Serial comms.

    Digital Input Terminals

    DI1~DI7: Programmable terminals and DI6 can be set as pulse input, 0Hz~60Hz; DI7 can be high frequency pulse input (1kHz~50.0kHz) or PTC thermistor input

    Digital output terminals

    DO1~DO2: Programmable terminals, Max. output current: 50mA, DO2can be the terminal to output pulse ( 0.1kHz~50.0kHz ), and output PWM

    Analogue output

    AO1: programmable terminal, 0V~10V

    Status relay

    2 programmable relays, contactor data:






    2 terminals (A&B) and RJ45 Port


    Modbus RTU



    1000m rated

    1000m~3000m, 1% rated current derating per 100m

    Operating Temperature


    Max. Humidity

    ≤90%RH, no-condensing


    ≤5.9m/s2 (0.6g)

    Storage Temperature


    Running Environment

    Indoor, non-flammable, no corrosive gasses, no contamination with electrically conductive material, avoide dust which may restrict the fan

    Competitive Advantage:

    Fast protection for output shortage, over current, over load, over voltage, under voltage, phase loosing, over heat (heatsink and junction), externa ltrip, etc.


    • User defined
    • 1.2 law ramp
    • 1.7 law ramp
    • 2.0 law ramp

    China Low voltage 3 Phase Variable Frequency Drive factory
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