GD350 Series High-performance Multifunction VFD

High-Precision Control Performance：With a speed ratio of 1:1000 in VC mode, speed control accuracy of ±0.02% (with PG), and torque response <10ms (with PG), it outputs 200% starting torque at 0Hz. Suitable for "high-precision vector inverters" and meets precision drive scenarios like high-speed motor spindles.
Full-Scenario Adaptability：Supports wide voltage ranges of AC 3PH 380V(-15%)~440V(+10%) and 520V(-15%)~690V(+10%), with power covering 1.5~630kW. Dual protection levels (IP20/IP55) and IP55 models resist acid corrosion, fitting "wide-voltage industrial inverters" for multi-environment needs.
Intelligent & Convenient Maintenance：Supports Bluetooth/WIFI wireless debugging, with mobile APP for parameter monitoring. The 7-inch LCD keypad allows 3 sets of parameter backup, and expansion interfaces are compatible with PROFINET, EtherCAT, etc., conforming to "intelligent maintenance inverters".
Safe & Reliable Design：Standard STO function meets SIL2 level; 380V 37kW and below models have built-in brake units; 18.5~110kW models have standard DC reactors. EMC filtering meets IEC61800-3 C3 to reduce electromagnetic interference.
Industry-Specific Functions：Features constant current at low speed for multi-motor driving; "no shutdown on instantaneous power failure" avoids production line interruptions. It supports tension taper and material break detection for winding scenarios, suitable for "industry-specific inverters".

Input Voltage AC 3PH 380V(-15%)~440V(+10%); AC 3PH 520V(-15%)~690V(+10%)
Input Frequency 50Hz/60Hz, allowable range 47~63Hz
Output Frequency 0~400Hz
Control Mode Space voltage vector control, sensorless vector control (SVC), vector control with PG (VC)
Motor Type Asynchronous motor, permanent magnet synchronous motor, direct-drive motor, motor spindle, etc.
Speed Ratio Asynchronous motor: 1:200 (SVC); Synchronous motor: 1:20 (SVC); 1:1000 (VC)
Speed Control Accuracy ±0.2% (SVC); ±0.02% (VC)
Torque Response <20ms (SVC); <10ms (VC)
Overload Capacity 150% rated current/60s; 180% rated current/10s; 200% rated current/1s
Safety Function STO (Safe Torque Off), complying with SIL2 level
Cooling Method Forced air cooling
Operating Ambient Temp -10~50℃ (derating required above 40℃)
Protection Level IP20 (basic model); IP55 (protective model)
Expansion Interfaces 3 expansion slots (SLOT1/SLOT2/SLOT3), supporting PG cards, communication cards, I/O cards
Brake Unit Configuration Built-in for 380V 37kW and below; optional built-in for 380V 45~110kW

Textile Industry：Suitable for spinning and weaving equipment. "No shutdown on instantaneous power failure" avoids yarn breakage from grid fluctuations; 0.25Hz/150% starting torque ensures stable low-speed operation of looms, reducing production loss.
Metal Processing：Used for engraving machines and lathes. The 1:1000 speed ratio and ±0.02% accuracy in VC mode ensure uniform tool feeding; low-speed high-torque adapts to multi-motor synchronous driving, improving processing precision.
High-Speed Motor Spindles：With a new flux observer and field weakening control, it supports 0~3200Hz high-frequency output with low motor noise. Suitable for air-bearing blowers and high-speed grinders, meeting high-speed operation needs.
Winding Tension Control：Supports tension taper, length counting, and inertia compensation for slitting and rewinding machines. Material break detection stops operation timely to avoid waste and ensure winding flatness.

Frequent Questions

1. Which communication protocols are supported for expansion?

It supports PROFINET, EtherCAT, Profibus-DP, CANopen via expansion cards; corresponding communication cards are required.
2. How to activate the STO 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?

380V 45kW models require optional built-in brake units; 37kW and below models have standard built-in units.
4. What scenarios are IP55 models suitable for?

Suitable for wet/dusty environments like beverage lines and ships, with all-metal housing and sealing to resist acid corrosion.

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