• Welcome to Hedy Drives
  • Hedy drives makes its wonderful Debuts in 2014 Hannover Messe
  • April 7th-11th 2014, Hedy drives participated in 2014 Hannover Messe in Germany
  • Hedy drives get successful market in Vietnam (local service successfully)

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Professional AC drives,frequency inverter,VFD ,Variable speed drives Supplier
HD770  -   high-performance frequency inverter AC drive (1.5kW - 75kW) 208 - 240V / 380 - 480V
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HD770 Series is a high-level field oriented control Frequency inverter with a high-performance, FOC control. It features versatile driving controls, modular design,wide variety of applications, easy maintenance, low malfunction rate, self diagnosis and competitive market price and brings customers not only the high-efficiency construction but also the most economic solution to compete with the global market.

    • It is a more accurate and powerful closed-loop vector frequency inverter.Support Open loop V/Hz AC drive,Open loop Vector AC drive, Open loop Rotor Flux Control (RFC),Closed loop Vector AC drive Servo for synchronous permanent magnet motors / brushless servo motors
    • More precise and powerful motor torque,speed and position control capacities
    • Complies with global safety standards, including CE, UL
    • Special function for machine tool
    • User-friendly Interface and support PC tool
    • Built-in Delta PLC function, safe stop function and brake unit
    • High-speed communication interface with built-in MODBUS communication (optional cards for PROFIBUS-DP

    Applications : petroleum, chemical, melting, hoisting, electric power, building materials, water supply, plastics, textiles, printing, packing Belt-type conveyors winches and other industries

    • Dual CPU processing, more precise control
    • Using the latest generation IGBT
    • 0.4k~7.5kW with standard inner brake unit
    • Inner EMC filter with breakpoint design, convenient for access and disconnection, meet different
    • 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
    • Automatic no-spin autotune for rapid performance optimization
    • 16 preset speeds available for greater application flexibility
    • Keypad access to all parameters basic and advanced menus
    • Open loop vector control. Speed or Torque control
    • Speed reference input: 0-10V, 0-20mA, 4-20mA (-10V to +10V)
    • Switching frequency from 3kHz up to 15kHz - quiet motor operation
    • Output frequency from 0 to 2000 Hz
    • Linear and S type acceleration and deceleration ramps
    • Modbus RTU RS485 via RJ45 connector as standard
    • DC injection braking as standard
    • Dynamic braking transistor as standard
    • Energy savings with dynamic motor flux V/Hz
    • Fan and pump energy optimization with quadratic motor flux V/Hz
    • Advanced standard software features, such as timers,thresholds, maths blocks, logic operators, PID controller and kW/h meter
  • Dimension :



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