INVT GD350 IP55 High-protection Multi-function VSD

Hot Redundancy Solution

During normal operation, one master VSD and two slave VSDs are inlcuded in the design, with the master inverter solely for M/S control (It can be the smallest frame). Using fiber optic communication to facilitate synchronized control between the two slave units to jointly drive the motor, each inverter driving 50% of the power to maintain load balance.

In the event of a failure in one slave inverter, it will automatically disengage its output contactor to isolate itself, while the remaining slave VSD continues operation, providing its 100% power. This transition occurs seamlessly, avoiding significant current fluctuations or mechanical shocks. 

Setting a step forward to realize Zero Down Time!

Dual rating design

INVT GD350 IP55 VSD with AC switch integrated

AC 3PH 380-440V Power: 4KW ~ 110KW Heavy duty (HD) 

Light load (Variable Torque): overload capacity is 120% of the rated output current for 60 seconds. 

Heavy load (Constant Torque): overload capacity is 150% of the rated output current for 60 seconds. 

EMC C3

The built-in C3 filter (30m) is standard for requirement meeting, while the optional external EMI filter can be selected to meet C2 class requirements.

Built-in braking unit

Built-in braking unit integrated up to 37KW (Heavy duty)

Brake units are not standard configuration for the 45–110kW VFD models. (If you want to use braking units for these models, add suffix "-B" at the end of the model codes in your purchase orders, for example, GD350-045G/055P-45-AS-B.)

Integrated AC Switch -AS models

AC switch for safe control: Integrated line side AC Switch -AS models

Electrical/ Performance Spec

Input voltage AC 3PH 380V (-15%)–440V (+10%) 

Input frequency (Hz) 50Hz or 60Hz, allowable range: 47–63Hz

Output voltage (V) 0–input voltage

Output frequency (Hz) 0~599Hz

Control mode SVPWM control, SVC, VG 

Motor type Asynchronous motor, permanent-magnet synchronous motor

Frequency setup mode Digital, analog, pulse frequency, multi-step speed, Simple PLC, PID, Modbus communication

Automatic voltage regulation function Keep the output voltage constant when grid voltage changes. 

Fault protection function Provide over 30 kinds of fault protection functions:
overcurrent, overvoltage, under-voltage, over-temperature, phase loss and overload, etc.

Catch on the fly Realize impact-free starting of the motor in rotating

Interface

Analog input 2 inputs, AI1: 0~10V/0~20mA; AI2: -10~10V

Analog output 1 output, AO1: 0~10V/0~20mA

Digital input 4 regular inputs; Max, frequency: 1kHz,  Internal impedance: 3.3k; 2 high-speed inputs; Max, frequency: 50kHz; supports quadrature encoder input, Speed measurement function

Digital output 1 high-speed pulse output, max, frequency: 50kHz; 1 Y-terminal open collector output

Relay output 2 programmable relay outputs: RO1A NO, RO1B NC, RO1C common port, RO2A NO, RO2B NC, RO2C common port, contact capacity: 3A/AC250V 1A/DC30V

Extension interface 3 extension interfaces: SLOT1, SLOT2, SLOT3
Expansion PG card, programmable extension card, communication card, IO card, etc. 

Environment

Installation mode Wall mounting, flange mounting

Temperature of ambient environment -10~50°C, derating is required if the ambient temperature exceeds 40°C

Protection level IP55

STO level SIL2

Cooling mode Air cooling

Brake unit 37kW or below: standard built-in; 45kW or above: optional built-in

EMC filter Conducted emissions of all models meet the requirements of C3 in the IEC/EN 61800-3 standard. The -AS models offers the 30m motor cable, meeting the C3 requirements. External filter is

optional: Conducted emission can meet the requirements of C2 in the IEC/EN 61800-3 standard.