GD300-21 Series Dual-VFD Integrated System for Air Compressor

INVT control system for air compressor dual-inverter integrated machine is the flagship product of INVT. It can realize dual inverter integrated control of the air compressor. This system solution is a perfect substitute for air compressor electrical cabinet but added with various additional powerful functions.
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1. Integrated dual-VFD design
Combining air compressor main VFD and fan VFD controls, featuring "one-screen-one-drive" solution tailored for air compressor applications, enhancing assembly efficiency by over 30% and reducing overall control system cost by more than 20%.
- Integrated PT100 temperature sensor and pressure input dedicated interfaces, with dual PID control for temperature and pressure, enabling precise control of the air compressor.
- Detachable terminals for easy wiring and maintenance.
- Built-in 30W/220V/110V power-frequency transformer with dedicated solenoid valve relay output for direct actuation.
- Supports 1.14× overload operation (at 40℃ ambient temperature, default carrier frequency).
- Supports 24V/1A power output to power touchscreens, controllers, etc.
- VFD-driven oil-cooling fan for energy-efficient temperature regulation.

2. Standard DC reactor
Across all models, enabling an input power factor of 0.9 or higher.

3. High reliability, long-life design
Easily handles harsh environments.
- IP56 vacuum-coated cooling fans with better durability.
- Independent air duct design to enhance VFD reliability.

GD300-21 Series VFD Manual

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