1. What Is a 400Hz Frequency Converter?

A  frequency converter is a specialized device that adjusts the output frequency of AC power up to 400Hz, enabling high-speed motor operation in industrial machinery. CNYH’s 400Hz frequency converter optimizes motor performance for applications requiring rapid speed control, such as CNC machine tools, robotic arms, and high-frequency pumps.

For more about our products, please click here.

2. How CNYH’s Frequency Converter Works

CNYH’s 400Hz frequency converter uses advanced technology to deliver precise high-speed control:

• High-Frequency Conversion:
  Converts standard grid power (50Hz/60Hz) to variable frequency output (0–400Hz) via IGBT modules, allowing motors to run at speeds up to 8x their rated frequency. This is critical for applications needing rapid acceleration or ultra-high RPM.
• Intelligent Control System:
  A built-in microprocessor monitors motor current, voltage, and temperature in real time. It adjusts output parameters to maintain stable operation, even at the maximum 400Hz frequency, reducing mechanical stress on high-speed motors.

3. Core Advantages of CNYH’s Converter

CNYH’s 400Hz frequency converter stands out for its technical innovation and reliability in high-speed scenarios:

• Ultra-High Speed Performance:
  Supports motor speeds up to 24,000 RPM (for 4-pole motors), with a speed control accuracy of ±0.05%. Ideal for precision applications like CNC milling, where high-speed rotation demands strict stability.
• Durable High-Frequency Design:
  Features a reinforced heat sink and low-loss capacitors to handle the thermal stress of 400Hz operation. The IP65-rated enclosure protects against dust and water jets, ensuring reliable performance in harsh factory environments.
• Energy Efficiency at High Frequencies:
  Achieves up to 96% conversion efficiency, reducing energy waste even at maximum frequency. Built-in regenerative braking recovers 15% of braking energy, further cutting operational costs for high-speed systems.

4. Key Applications

CNYH’s 400Hz frequency converter excels in high-speed industrial applications:

• CNC Machine Tools:
  Controls spindle motors in milling and grinding machines, enabling smooth operation at 400Hz for precise material cutting and surface finishing. Reduces machining time by 20% compared to standard converters.
• Robotics and Automation:
  Powers high-speed robotic arms in assembly lines, providing rapid acceleration/deceleration while maintaining position accuracy. Suitable for e-commerce sorting systems and automotive welding robots.
• Aerospace and Defense:
  Used in test benches for aircraft engine components, where motors must operate at 400Hz to simulate high-altitude conditions. Meets strict safety standards for defense-related applications.

5. How to Choose the Right 400Hz Frequency Converter

When selecting a 400Hz frequency converter, consider these factors:

1. Frequency Range:
   Ensure the converter supports continuous operation at 400Hz. CNYH’s models are tested for 10,000+ hours at full frequency, unlike generic converters that may overheat at high speeds.
2. Motor Compatibility:
   Match the converter’s power rating (5kW–200kW) to your motor’s requirements. CNYH offers models for both single-phase (220V) and three-phase (380V) high-speed motors.
3. Environmental Protection:
   Opt for IP65 or higher ratings for dusty or wet environments. CNYH’s converters operate reliably from -10°C to +50°C, with surge protection against voltage spikes in unstable grids.