Category | Item | Specifications |
Power input | VFD input voltage (V) | 3PH AC 220V (-15%)–240V (+10%) 3PH AC 380V (-15%)–440V (+10%) |
Rated input frequency (Hz) | 50Hz or 60Hz; allowed range: 47–63Hz | |
VFD core module efficiency | >97% | |
Main motor VFD power output | Output voltage (V) | Equal to the input voltage, with the error <5% |
Output frequency (Hz) | 0–400Hz | |
Fan VFD power output | Output voltage (V) | Equal to the input voltage, with the error <5% |
Output frequency (Hz) | 0–50Hz | |
Other power output | +24VDC power supply | Rated load power: 24W |
220VAC/110VAC | Rated load power: 30W | |
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) | |
Overload capacity | Main motor VFD: 150% for 1 minute Fan VFD: 112% for 1 minute | |
Dedicated functions | Sleep and wake-up, constant pressure control, constant temperature control, part maintenance, phase sequence detection, and fan overload protection | |
Analog input of pressure | Two 0–20mA/0–10V inputs | |
Analog input of temperature | Two temperature analog inputs; resolution: 1°C; range: -40℃–+200°C | |
Digital input | Five regular digital inputs; max. frequency: 1kHz | |
Digital output | One regular digital output; 50mA/30V | |
Solenoid valve | One set of solenoid valve coil control voltage output terminals T1A/T1C, providing AC 220V or 110V, with a maximum load capacity of 30W | |
Relay output | One set of normally open dry contact terminals RO2A/RO2C, contact rating 3A/AC250V or 1A/DC30V | |
Safe torque off (STO) input | Two inputs, STO1 and STO2 | |
Fault protection | More than 30 protection functions, such as protection against overcurrent, overvoltage, undervoltage, overtemperature, phase loss, and overload. | |
RS485 communication | One RS485 communication | |
Solenoid valve output | Default 220V, configurable for 110V coil output, maximum power 30W | |
Other | Mounting method | Wall mounting or floor 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 | |
Cooling method | Forced air cooling | |
DC reactor | Standard configuration | |
EMC filter | Optional external filters can be used to meet the IEC61800-3 C2 requirements. |
Popular Searches:
GD350-21 Series Dual-VFD Integrated System for Air Compressor
The GD350-21 series dual-VFD integrated system for air compressor is developed on the foundation of the existing GD300-21 series Variable Frequency Drive (VFD). It incorporates a new-generation control platform technology and is specifically designed around the characteristics of air compressors. As a high-end, fully integrated solution for air compressors that provides full variable frequency control for both the motor and fan, it perfectly achieves integrated drive and management for air compression systems.
·15~90kW
·380V
·IP rating: IP20
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Features
Intelligent control algorithms for stable and reliable operation
Features a low-harmonic control algorithm to reduce motor temperature rise and extend motor service life.Multiple control modes (V/F, vector, and VVC) for different motor load types.Control loop bandwidth increased by 10×, with enhanced grid/load fluctuation adaptability for more stable operation.01
Dedicated design for simplicity and ease of use
Standard LED keypad with intuitive display and parameter copy function for convenient commissioning of motor and fan parameters.Compatible with motor parameters from multiple brands, reducing parameter-matching faults such as OC, STO, and DEU, and ensuring long-term stable operation of the air compressor.Built-in logic and interfaces designed for air compressors, eliminating the need for a dedicated controller or PLC. It supports dual-VFD control for both the motor and the oil-cooling fan, enabling greater energy savings through constant temperature control.Built-in 110V/220V power-frequency transformer and dedicated solenoid valve relay interface for direct valve control.Cooling fans with IP56 vacuum-coated design, significantly reducing fan failure rate and improving system reliability.Built-in DC reactor as standard across the entire series.02
Specifications
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