Affordable Servo VFD Kit: 380V Input 3-Phase Output, Free Technical Support Included

I. Key Technical

1. Input/Output Characteristics

• Single-Phase 220V Input:
  • Directly compatible with household/industrial single-phase grids, eliminating the need for additional transformers or phase converters.
  • Input voltage range: 220V ±15% (187V–253V), adaptable to grid fluctuations.
• Three-Phase Output:
  • Output voltage: 0–220V three-phase adjustable (simulated via PWM modulation).
  • Frequency range: 0–400Hz, supporting high-speed motors (e.g., spindle motors) and low-speed precision control.

2. Power and Load Adaptation

• • Power Range: 0.4kW–4kW
    • 0.4kW–1.5kW: Suitable for light loads (e.g., small conveyors, fans).
    • 2.2kW–4kW: Covers medium-duty equipment (e.g., CNC machines, compressors).
  • Overload Capacity: Typically 150% rated current for 1 minute to handle short-term heavy loads (e.g., motor startup surges).

3. Control Modes

• V/F Control:
  • Principle: Maintains a proportional relationship between voltage and frequency, ideal for fan/pump loads.
  • Advantage: Simple structure, low cost, and significant energy savings (20%–30% vs. fixed-speed operation).
• Sensorless Vector Control (SVC):
  • Principle: Decouples motor flux and torque for high torque at low speeds.
  • Advantage: Fast dynamic response (≤50ms), suitable for precision machining (e.g., engraving, drilling).

Ⅱ.Core Features

1. Comprehensive Protection Functions

• Overcurrent/Overvoltage/Undervoltage Protection: Prevents damage from grid abnormalities or load surges.
• Overheating Protection: Built-in temperature sensors safeguard IGBT modules from burnout.
• Phase Sequence Error Protection: Automatically detects input phase sequence to prevent motor reversal.
• Ground Fault Protection: Isolates insulation failures to ensure operator safety.

User Value: Reduces equipment failure rates, lowering maintenance costs and downtime.

2. Energy Optimization

• Soft Start Function: Smoothly accelerates motors, reducing inrush current (50%–70% lower than direct-on-line starting).
• Sleep/Wake Mode: Automatically hibernates during idle periods and resumes quickly (e.g., nighttime fan energy savings).

User Value: Long-term electricity cost savings, especially for continuously operating equipment.

3. User-Friendly Design

• One-Key Auto-Tuning: Automatically identifies motor parameters (resistance, inductance) to simplify commissioning.
• LED/LCD Display: Real-time monitoring of frequency, current, and fault codes for quick troubleshooting.
• Multilingual Support: Interfaces available in Chinese/English to lower technical barriers.

User Value: Shortens installation/debugging time and reduces reliance on specialized expertise.

Ⅲ. Typical Application Scenarios and Outcomes

Scenario 1: Retrofitting a Small CNC Machine

• Problem: Original fixed-speed motor lacks precision for diverse cutting tools.
• Solution:
  • Install a 2.2kW servo VFD with vector control mode.
  • Use PID regulation to adjust spindle speed dynamically.
• Outcome: Surface roughness improved, tool life extended by 30%.

Scenario 2: Agricultural Irrigation Pump Control

• Problem: Traditional pumps run at full speed, causing unstable pressure and energy waste.
• Solution:
  • Pair a 1.5kW VFD with a pressure sensor for constant pressure water supply.
  • Enable low-frequency night mode to reduce evaporation.
• Outcome: 25% electricity savings, pressure fluctuations reduced from ±15% to ±3%.