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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.

Installation Type:
Plastic casing
Cabinet-mounted unit
Tags:
* High-Performance VFD
* Modbus-RTU Inverter
* Profibus-DP Optional
* Resolver Interface
Documentos:
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Key technical parameter

ItemParameter
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.
Communication:
vfd Communication

Our 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.
WP Data Tables
WP Data Tables

HUAKIA VFD Series: Frequently Asked Questions (FAQ)

This FAQ provides answers to common questions about HUAKIA's VDN series Variable Frequency Drives (VFDs), covering models VDN100, VDN200, VDN300, VDN500, VDN700, and VDN900. This guide is optimized for users seeking reliable motor control solutions.

A Variable Frequency Drive (VFD) controls the speed and torque of an AC induction motor by varying the frequency and voltage of its power supply. HUAKIA’s VDN series VFDs are designed for high performance and reliability across various industries, including textile, paper making, wire drawing, machine tools, packaging, food processing, fans, and pumps. Our drives feature advanced vector control technology, providing excellent low-speed torque, fast dynamic response, and robust overload protection for demanding automation applications.

To select the right VFD, you must match the drive’s output current and power rating (kW) to your motor’s full load current and power. First, check your motor’s nameplate for its rated voltage (e.g., 380V), current (Amps), and power (kW). Then, refer to the “Rated Output Current” table in our manuals (e.g., for VDN500/700/900). Choose a VFD model (G-type for constant torque loads like conveyors, or P-type for variable torque loads like fans and pumps) whose rated output current is equal to or greater than your motor’s rated current. For high-starting torque loads (e.g., hoists, extruders), select a G-type model and consider oversizing the VFD by one power level.

The HUAKIA VDN series offers versatile control modes to suit different performance needs:

  • V/F Control (Voltage/Frequency): Suitable for basic speed control, multi-motor applications, or when motor parameters are unknown (e.g., VDN100, VDN200).

  • Sensorless Vector Control (SVC): Provides high starting torque (up to 150% at 0.5Hz) and good speed accuracy without an encoder. Ideal for most general-purpose high-performance applications (e.g., VDN700, VDN900).

  • Closed-Loop Vector Control (FVC): Requires an encoder (PG card) on the motor. Offers zero-speed full torque, the highest speed accuracy (±0.02%), and precise torque control for demanding applications like hoisting and elevators (e.g., VDN500, VDN900).

Auto-tuning is critical for optimal vector control performance. The process is:

  1. Correctly set the motor’s nameplate parameters (rated power, voltage, current, frequency, speed) in the P1 group (or similar) of the VFD parameters.

  2. For Static Tuning (motor shaft cannot be uncoupled), set the tuning parameter (e.g., P1-37=1 for VDN500/700, H-62=2 for VDN300) to measure stator and rotor resistance.

  3. For Dynamic Tuning (best performance, uncouple motor from load), set the tuning parameter (e.g., P1-37=2) to measure all motor parameters.

  4. After setting the parameter, press the RUN key on the VFD’s keyboard. The drive will perform the measurement and stop automatically. The motor will run briefly during dynamic tuning.

Overcurrent (OC) and overvoltage (OV) are common faults often caused by incorrect parameter settings.

  • Overcurrent (OC) fault: Usually occurs during acceleration or heavy load. Solution: Increase the acceleration time (e.g., P0-17), decrease the torque boost value (e.g., E04.01 for VDN900), or check for mechanical blockages.

  • Overvoltage (OV) fault: Often happens during deceleration due to load inertia generating energy back to the VFD. Solution: Increase the deceleration time (e.g., P0-18), enable the overvoltage stall protection (e.g., P3-23=1 for VDN500), or add a braking resistor/unit. For a comprehensive guide, refer to the ‘Fault Diagnosis’ chapter in your specific model’s manual.

No, you cannot. The VDN series (e.g., VDN100-300, VDN500-900) three-phase models are designed specifically for three-phase power input. Connecting them to a single-phase supply will cause a fault and potentially damage the drive. If you only have single-phase power, you must purchase a model specifically designed for single-phase input, typically available for smaller power ratings (e.g., VDN100-S2 series for 220V single-phase).

To ensure long life and reliable operation, regular maintenance is key.

  • Daily: Check the ambient temperature, unusual motor noise/vibration, and cooling fan operation.

  • Every 3-6 months: Inspect for loose terminals, dust buildup on the heatsink, and corrosion. Clean the VFD with compressed air. Tighten all power terminals to the specified torque.

  • Every 2-3 years: The cooling fans may need replacement as they are mechanical wear parts.

  • Every 4-5 years: The main circuit DC bus capacitors should be checked, and their usable life is typically 4-5 years depending on ambient temperature and load.

The VDN series drives are designed for easy integration into industrial automation systems. They support multiple communication protocols via optional plug-in cards:

  • Standard: Modbus RTU (RS485) is available on most models like VDN100, VDN200, VDN300, and VDN500.

  • Optional: Via dedicated expansion cards, the VDN series can support Profibus-DP, CANlink, and CANopen for more advanced fieldbus requirements.

Standard VFD operation is specified for altitudes up to 1000m (about 3280 feet). If you install a VDN series VFD at a higher altitude, the air is thinner, which reduces the drive’s cooling capacity.

  • Derating: You must “derate” the VFD, meaning you must reduce the output current to prevent overheating. A common rule (for VDN100, VDN700) is to reduce the rated output current by 1% for every 100m above 1000m. The maximum recommended altitude for standard models is typically 3000m. Please consult the specific manual or HUAKIA support for precise derating factors.

HUAKIA provides a standard 18-month warranty from the date of manufacture (as indicated by the product serial number) for all VDN series VFDs. This warranty covers repair or replacement of the product if the failure is due to confirmed manufacturing defects or component failure under normal operating conditions. The warranty does not cover damage caused by improper installation, misuse, overloading, or external factors like fire, flood, or lightning.