GD350A Series Enhanced Multifunction VFD

High-Precision Control Performance：Torque response ≤5ms, speed ratio 1:1000 for synchronous motors in FVC mode, speed control accuracy ±0.02%, speed overshoot <5%, and closed-loop vector dynamic speed drop <0.25%. Suitable for "high-precision vector inverters" and precision drive scenarios like motor spindles.
Energy-Efficient Features：Both VF and vector control support new energy-saving algorithms, reducing light-load current by 30%. DPWM modulation cuts switching loss by 30%. 18.5~110kW models have standard built-in DC reactors to improve power factor, fitting "energy-saving general inverters".
Full-Scenario Adaptability：Supports AC 3PH 380V(-15%)~440V(+10%) and 1.5~3000kW power (via parallel connection). 1.5~37kW models have standard built-in brake units; 45~110kW models offer optional built-in/external units, suitable for "wide-power general inverters".
Flexible Expansion & Maintenance：3 expansion slots support PROFINET, EtherCAT and other protocol cards. Bluetooth/WIFI cards enable mobile APP debugging. The 7-inch LCD keypad supports 3 sets of parameter backup, with remote/local firmware upgrade, belonging to "intelligent maintenance inverters".
Safe & Reliable Design：STO function meets SIL2 level; supports direct access of PT100/PT1000 sensors for motor temperature monitoring. IP20 protection + forced air cooling ensures stable operation at -10~50℃, with EMC compliance to CE certification, reducing equipment interference.

Input Voltage AC 3PH 380V(-15%)~440V(+10%), rated voltage 380V
Input Frequency 50Hz/60Hz, allowable range 47~63Hz, frequency change rate ≤20%/s
Output Frequency 0~599Hz
Control Mode Space voltage vector control, sensorless vector control (SVC), vector control with PG (FVC)
Motor Type Asynchronous motor, permanent magnet synchronous motor, synchronous reluctance motor (custom software required)
Speed Ratio Asynchronous motor: 1:200 (SVC); PMSM: 1:200 (SVC)/1:1000 (FVC); Synchronous reluctance motor: 1:100 (SVC)
Speed Control Accuracy ±0.2% (SVC); ±0.02% (FVC)
Torque Response ≤5ms
Overload Capacity 150% rated current/60s; 180% rated current/10s; 200% rated current/1s
Starting Torque 0.25Hz/150% (SVC); 0Hz/200% (FVC)
Safety Function STO (Safe Torque Off) complying with SIL2; Motor temperature detection (supports PT100/PT1000, etc.)
Cooling Method Forced air cooling
Operating Ambient Temp -10~50℃ (derating required above 40℃)
Protection Level IP20
Analog I/O 2 inputs (AI1: 0~10V/0~20mA; AI2: -10~10V); 1 output (AO1: 0~10V/0~20mA)
Certification Complies with CE certification

Metal Processing Industry：Suitable for lathes and engraving machines. FVC mode’s 1:1000 speed ratio and ±0.02% accuracy ensure uniform tool feeding; low-speed high torque meets multi-motor synchronous driving, improving part processing precision.
Textile Industry：Used in spinning and weaving equipment. Non-stop operation on instantaneous power failure avoids yarn breakage from grid fluctuations; 0.25Hz/150% starting torque ensures stable low-speed loom operation, reducing production loss.
Compressor Drives：G/P integration adapts to different loads; energy-saving algorithms cut light-load energy consumption by 30%. Built-in brake units (standard for 1.5~37kW) enable quick shutdown, fitting frequent start-stop compressor scenarios.
Printing & Packaging Industry：Supports PROFINET communication expansion for linkage with production line PLCs; torque control accuracy ≤5% ensures stable printing tension, avoiding material stretching and improving packaging yield.

Frequent Questions

1. Which communication protocols are supported for expansion?

It supports PROFINET, EtherCAT, CANopen via expansion cards (e.g., EC-TX509C for PROFINET), requiring corresponding cards.
2. How to activate the STO safety function?

Remove the jumper between H1/H2 and +24V, connect external NC contacts; STO activates when contacts open, complying with SIL2.
3. Does the 45kW model have a built-in brake unit?

45~110kW models require optional built-in/external brake units; 1.5~37kW models have standard built-in units.
4. Which control modes support the energy-saving algorithm?

Both VF and vector control modes. Light-load current decreases by 30%, and switching loss drops by 30% due to DPWM modulation.

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