Category | Item | Specifications |
Power input | VFD input voltage (V) | 3PH 380V (-15%)–440V (+10%) |
Rated input frequency (Hz) | 50Hz or 60Hz; allowed range: 47–63Hz | |
Efficiency | >97% | |
Power output | Output voltage (V) | Equal to the input voltage, with the error <5% |
Output frequency (Hz) | 0–400Hz | |
Power supply output | +24VDC power supply | Up to 24W |
Running control performance | Control mode | Open-loop vector, space voltage vector |
Speed ratio | Asynchronous motors (AMs): 1:200 (SVC); synchronous motors (SMs): 1:20 (SVC) | |
Speed control accuracy | ±0.2% (SVC) | |
Speed fluctuation | ±0.3% (SVC) | |
Torque response | <20ms (SVC) | |
Starting torque | For AMs: 0.25Hz 150% (SVC) For SMs: 2.5Hz 150% (SVC) | |
Frequency reference mode | PID control, Modbus communication, P1- and P2- analog inputs, keypad | |
Overload capacity | 150% 1min | |
Dedicated functions | Sleep and wake-up, constant pressure control, constant temperature control, part maintenance, and phase sequence detection | |
Pressure analog input | Two 4–20mA/0–1.6MPa inputs | |
Temperature analog input | Two inputs; resolution: 1°C; range: -20°C–+150°C; error: 3°C | |
Digital input | Five regular inputs; max. frequency: 1kHz | |
Digital output | Two relay outputs (NO), 250VAC/3A; one changeover relay output, 250VAC/3A | |
Fault protection | More than 30 protection functions, such as protection against overcurrent, overvoltage, undervoltage, overtemperature, phase loss, overload, and fan current imbalance. | |
RS485 communication | One RS485 interface (three terminals) | |
Other | Mounting method | Wall mounting, flange mounting |
Temperature of running environment | -10°C–+50°C Derating is required when the ambient temperature exceeds 40°C. Derate by 1% for each increase of 1°C. | |
Ingress protection (IP) rating | IP20 | |
Pollution degree | Degree 2 | |
Cooling method | Forced air cooling | |
DC reactor | 15–110kW: Standard (built-in) 132–315kW: Optional (external) | |
EMC filter | Built-in C3 filter as standard, disabled by default at the factory. To enable it, connect jumper J10. An optional external filter is available to comply with IEC 61800-3 C2. |
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GD300-01A Series VFD for Air Compressor
The GD300-01A series Variable Frequency Drive (VFD) for air compressors is designed for the control of both synchronous and asynchronous air compressors. It features dedicated air compressor control logic and interfaces, allowing it to directly receive various signals, including emergency stop, pressure, temperature, fan current transformer input, and fault signals. It is a general-purpose split-type VFD for air compressors, available across the full power range.
·7.5~315kW
·380V
·IP rating: IP20
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Features
Integrated design with simplified electrical control and 20% improvement in assembly efficiency
Integrates PT100 and pressure input dedicated interfaces, with dual PID control for temperature and pressure, enabling precise control of the air compressor. Pluggable terminals for easy wiring and maintenance.01
Dedicated function design with a comprehensive solution cost reduced by over 10%
Built-in air compressor control logic eliminates the need for a PLC and air compressor controller.Standard LED keypad provides an intuitive display for convenient commissioning and maintenance.Supports 1.14× overload operation (at 40℃ ambient temperature, default carrier frequency).Supports 24V/1A power output for touchscreens, controllers, and other devices. (7.5kW/500mA)02
High reliability and long service life for harsh environments
IP56 vacuum-coated cooling fans with better durability, combined with an independent air duct design to enhance VFD reliability.03
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