Home / Industrial Drive & Control / Ultra-Compact Sensorless Vector VFD | 0.4kW – 2.2kW AC Drive

Ultra-Compact Sensorless Vector VFD | 0.4kW – 2.2kW AC Drive

The VDN60 Series is a super compact, high-performance vector frequency converter engineered for space-constrained applications. Utilizing advanced sensorless vector control (SVC) and V/F control technology, this drive delivers precise speed regulation for small-power three-phase asynchronous motors. Its innovative book-type design and DIN-rail mounting capability save up to 15% more installation space compared to similar products, making it the ideal solution for OEMs, panel builders, and automation projects where simplicity, economy, and high efficiency are paramount.

Installation Type:
Plastic casing
Tags:
* DIN Rail VFD
* Micro VFD Drive
* RS485 Modbus VFD
* Sensorless Vector VFD
Documentos:
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Key technical parameter

ItemParameter
Power Range:
1-Phase 220V: 0.75kW – 2.2kW
Input Voltage:
Single-Phase 220V: -15% ~ +15%, 50/60Hz
Protection Level:
IP20
Control Model:
Sensorless Vector Control (SVC), V/F Control
Overload Capacity:
G-Type: 150% for 60 seconds (Typical for vector drives)
Starting Torque:
150% rated torque at 1.0 Hz (Sensorless Vector Control)
Braking Unit:
Built-in (Standard for models in this power range)
Communication:
vfd Communication
Protection:
Over-current, Over-voltage, Under-voltage, Overload, Phase Loss, Short-circuit

Our advantage

Global Communication Ready
Equipped with a built-in RS485 interface and industry-standard Modbus-RTU protocol, enabling easy integration into PLC and SCADA systems for automated industrial control.
Ultra-Compact, Space-Saving Design
Features a book-type structure that reduces installation volume by approximately 15% compared to similar products. Supports DIN-rail mounting
High-Performance Motor Control
Utilizes Sensorless Vector Control (SVC) technology to deliver 150% starting torque at 1.0 Hz, ensuring robust startup and stable operation for demanding small-power applications.
Comprehensive Functionality
Integrates a wide range of standard features, including PID control, multi-step speed (up to 15 speeds), DC braking, and flexible frequency sources, eliminating the need for external controllers in many applications.
Robust & Relable Components
Built with world-class, first-tier components to ensure long-term reliability and stable performance in diverse operating environments.
Simple & Economical Operation
Designed for simplicity with an intuitive interface, making it easy to commission and operate, providing a cost-effective solution for basic speed control needs.
  • Ultra-Compact, Space-Saving Design: Features a book-type structure that reduces installation volume by approximately 15% compared to similar products. Supports DIN-rail mounting for quick and simple integration into control panels.
  • High-Performance Motor Control: Utilizes Sensorless Vector Control (SVC) technology to deliver 150% starting torque at 1.0 Hz, ensuring robust startup and stable operation for demanding small-power applications.
  • Comprehensive Functionality: Integrates a wide range of standard features, including PID control, multi-step speed (up to 15 speeds), DC braking, and flexible frequency sources, eliminating the need for external controllers in many applications.
  • Global Communication Ready: Equipped with a built-in RS485 interface and industry-standard Modbus-RTU protocol, enabling easy integration into PLC and SCADA systems for automated industrial control.
  • Robust & Relable Components: Built with world-class, first-tier components to ensure long-term reliability and stable performance in diverse operating environments.
  • Simple & Economical Operation: Designed for simplicity with an intuitive interface, making it easy to commission and operate, providing a cost-effective solution for basic speed control needs.

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.