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VDN500 Series

VDN500 Series Universal Current Vector Control Inverter for AC Motor Control

The VDN500 Series is a universal high-performance current vector control inverter specifically designed to regulate the speed and torque of three-phase AC asynchronous motors. Engineered with advanced vector control technology, it delivers high torque output at low speeds, exceptional dynamic characteristics, and superior overload capacity. The series features a rich set of built-in functions, including user-programmable capabilities, background monitoring software, and support for multiple communication buses and PG cards, ensuring stable performance in demanding industrial environments.

High-Performance VFD
Modbus-RTU Inverter
Profibus-DP Optional
Resolver Interface
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Technical Parameter

Power Range:
220V Class: 0.4kW to 220kW.    380V Class: 0.75kW to 630kW.
660V Class: 7.5kW to 630kW.    1140V Class: 37kW to 630kW.
Input Voltage:
Supports Single-phase/Three-phase 220V
Three-phase 380V, 660V, and 1140V (50Hz/60Hz)
Protection Level:
IP20
Control Model:
Open-loop Vector Control (SVC). Closed-loop Vector Control (FVC). V/F Control.
Overload Capacity:
Starting Torque:
Braking Unit:
Communication:
Protection:

Key technical advantage

  • High Torque at Low Speed: Provides 150% starting torque at 0.5Hz (SVC) and 180% at 0Hz (FVC).
  • Rapid Current Limiting: Minimizes overcurrent faults to protect the inverter during sudden load changes.
  • Advanced Bus Support: Compatible with Modbus, Profibus-DP, CANlink, and CANopen protocols.
  • Excellent Dynamic Response: Features high-performance current vector technology for precise motor control.
  • Versatile PG Card Compatibility: Supports various encoders including differential, open collector, UVW, rotary transformer, and sine-cosine.
  • Non-Stop Power Failure: Utilizes load feedback energy to keep the inverter running for a short time during transient power outages.

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FAQ

For distances exceeding 50 meters, it is recommended to install an AC output reactor to prevent motor insulation damage caused by high-frequency oscillation.

Check if the baud rate and communication address (Pd group) match the master. Ensure the RS485 wiring is secure and consider adding a 120Ω terminating resistor.

Yes, but the unit must be derated. For every 100m increase above 1000m, derate the output current by 1% due to reduced air cooling efficiency.

Yes. By adding a PG expansion card, the VDN500 supports high-precision closed-loop vector control (FVC).

Set parameter PP-01 to 1 to restore all parameters to default (this will not reset motor parameters).

Standard motors have poor heat dissipation at low speeds. Use a dedicated variable-frequency motor or add an independent external cooling fan.