VFD 4kW three phase 400V inverter INVT GD20 front view
VFD 4kW three phase 400V inverter INVT GD20 front view

INVT GD20-EU 4 kW Frequency Inverter (400 V Three-Phase VFD)

CHF 335.00 excl. VAT, free Shipping

Power & Voltage:
4 kW VFD (Variable Frequency Drive) with three-phase 400 V input (380–440 V, 50/60 Hz) – ideal for controlling small to mid-size motors.

Control & Performance:
Supports V/f control & advanced sensorless vector control for precise motor speed and torque. Smooth start at 0.5 Hz with 150% starting torque, ±0.2% speed accuracy, and wide overload capacity – perfect for demanding applications.

Safety & Protection:
Built-in Safe Torque Off (STO) for maintenance safety, robust protection against overcurrent, overvoltage, undervoltage, motor overload, and overheating.

Efficiency & Ease of Use:
Integrated C3 EMI filter reduces interference. Built-in braking chopper for dynamic braking without external components. Auto motor parameter tuning and customizable V/f curves for energy-efficient operation.

Communication & I/O:
RS485 communication with Modbus RTU & ASCII protocol. Multiple analog and digital inputs/outputs, plus virtual terminals for flexible I/O configuration.

Application Areas:
This 4 kW 3-phase inverter is ideal for HVAC fans and compressors, pumps, conveyors, food processing lines, plastics, and other automation systems where reliable speed control is essential.

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In stock

SKU: GD20-004G-4-EU Category: Tag:

Description

The INVT GD20-EU 4 kW 400 V three-phase model is engineered for precise motor control in industrial automation and OEM applications. Featuring sensorless vector control, Safe Torque Off (STO) protection, and an integrated braking unit, the GD20-EU 4 kW ensures reliable performance for pumps, fans, conveyors, and HVAC systems.

Key Features

  • Power Rating: 4 kW (suitable for most small to mid-size motors)

  • Input Voltage: 3-phase AC, 380–440 V (-15% to +10%)

  • Control Modes: V/f control and advanced sensorless vector control (SVC)

  • Starting Torque: 150% at 0.5 Hz (SVC) for heavy-duty starts

  • Speed Accuracy: ±0.2% for precise motor speed control

Built-in Safety and Intelligent Protection

This GD20-EU 4 kW includes integrated Safe Torque Off (STO) to prevent accidental motor movement during maintenance. Multiple protection mechanisms guard against:

  • Overcurrent, overvoltage, undervoltage

  • Motor overload and overheating

  • Short-term power loss with energy feedback for uninterrupted operation

Energy Efficiency and Easy Configuration

  • Energy Monitoring: Built-in display tracks cumulative energy usage

  • Auto Tuning: Supports static and rotating motor parameter tuning

  • Common DC Bus Compatibility: Allows energy sharing between drives

  • Built-in Braking Chopper: Enables dynamic braking for fast stopping

Communication and I/O Interfaces

  • RS485 ports with Modbus RTU and ASCII protocol

  • Optional external LED keypad for remote use and parameter copy

  • Virtual Terminals and sequential control delays for automation sequences

  • I/O configuration:

    • 2 analog inputs, 1 analog output

    • 4 digital inputs + 1 high-speed input (50 kHz)

    • 1 digital output + 2 programmable relay outputs

Industrial Applications

  • HVAC systems: fans, compressors, blowers

  • Pumps: water, wastewater, irrigation

  • Conveyors & material handling

  • Plastic extrusion, textile machinery, packaging

  • Woodworking and ceramic production

  • Cable manufacturing and automation systems

Certifications

CE | UL | cUL | TÜV SÜD

Why Choose the INVT GD20-EU 4 kW?

The INVT GD20-EU 4 kW model delivers precise motor control and reliable operation for industrial automation and OEM systems. It features sensorless vector control, Safe Torque Off (STO) safety, and an integrated braking unit. With flexible control modes and RS485 communication support, the GD20-EU 4 kW is ideal for pumps, fans, conveyors, and HVAC applications, providing a robust solution for both new installations and system upgrades.

See our full range of 400 V variable frequency drives, covering all power ratings from 0.75 to 500 kW.

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Additional information

Brake Chopper

Communication Protocols

Modbus RTU & ASCII
Control Methods

SVPWM, SVC (Sensorless Vector Control)
Dual Rating Capability

Single Rating
EMC Filter

Input Voltage

Motor Compatibility

Asynchronous Motors
Mounting Type

Wall and Flange Mounting
Safety Features

User Interface

LED Keypad

Specification

Motor Rated Power (kW) 4
Rated Current (A) 9,5
Line Voltage, Frequency AC 3-ph. 380 V … 440 V (-15% … +10%), 50 Hz/60 Hz (± 5%)
Output Voltage 3-ph. 0 V … 480 V (max. input voltage)
Overload Capacity 150% for 60s, 180% for 10s; 200% for 1s
Output Frequency 0 … 590 Hz
Control Inputs Analog: 2 Inputs (AI2: 0 … 10 V / 0(4) … 20 mA; AI3: -10 … 10 V)
Digital: 5 programmable inputs, including 1 High-Speed Input (50 kHz)
Control Outputs 2 Outputs each 0 … 10V / 0 (4) … 20 mA
Digital: 1 potential-free digital output
2 freely programmable relays with changeover contacts
Interfaces RS485 on terminals (Modbus RTU & ASCII)
Brake Chopper Integrated
EMC Filter Integrated C3 filters, optional C2 filter (comply with IEC61800-3 requirments )
DC Reactor –
Safety Functions 2-channel STO, SIL3, PL “e”
Protection Rating IP20
Operating Temperature -10°C … +50°C; performance reduction required if ambient temperature exceeds +40°C, fan cooling
Certifications CE, TÜV SÜD, UL, and cUL
Dimensions (mm) * Width x Height x Depth 146 mm x 256mm x 167mm

 

 

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FAQ

Q1: What is the input voltage for the INVT GD20-EU 4 kW 400 V model?
A: The INVT GD20-EU 4 kW 400 V three-phase drive supports AC input voltage from 380–440 V (50/60 Hz), making it suitable for most standard European 400 V motor installations.

Q2: Can the GD20-EU 4 kW drive different motor types?
A: Yes. The GD20-EU 4 kW supports both V/f control and sensorless vector control (SVC), allowing it to operate standard induction motors with precise torque control at low speeds.

Q3: What built-in safety and protection features does the GD20-EU 4 kW offer?
A: The drive includes Safe Torque Off (STO) plus protections against overcurrent, overvoltage, undervoltage, overheating, and motor overload, ensuring safe and reliable operation in demanding industrial applications.

Q4: Is the GD20-EU 4 kW suitable for HVAC, pumps, and conveyors?
A: Absolutely. The GD20-EU 4 kW is commonly used in HVAC fan and compressor control, water and wastewater pumping systems, conveyor belts, plastics and food processing lines, and other industrial automation applications.

Q5: Can I integrate the GD20-EU 4 kW with PLC or SCADA systems?
A: Yes. It includes RS485 communication with Modbus RTU and ASCII support for easy integration with PLCs, SCADA systems, and other controllers.

Q6: What is the starting torque and frequency range of the GD20-EU 4 kW?
A: The drive can start motors at just 0.5 Hz with up to 150 % starting torque, making it ideal for heavy-duty applications that require smooth, controlled starts.

Q7: Does the GD20-EU 4 kW support energy monitoring and motor tuning?
A: Yes. It features energy consumption monitoring, auto motor parameter tuning, and customizable V/f curves for energy-efficient operation.

Q8: Is the GD20-EU 4 kW certified for quality and safety?
A: Yes. The drive is CE, UL, and cUL certified and TÜV SÜD tested, meeting international safety and performance standards.

Related Documents

Documentation for INVT GD20-EU 3-Phase 400V 4 kW:

 

 

 

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