Front view of the INVT GD20 37 kW Variable Frequency Drive (VFD) showing a compact design with LED keypad and robust industrial casing.
Front view of the INVT GD20 37 kW Variable Frequency Drive (VFD) showing a compact design with LED keypad and robust industrial casing.

INVT GD20-EU 37 kW Frequency Inverter (400 V Three-Phase VFD)

CHF 1,345.00 excl. VAT, free Shipping

  • Motor Power: 37 kW | Input Voltage: 3-phase 400V AC (±10%)

  • Control Modes: V/f & Sensorless Vector Control (SVC)

  • Startup Torque: 150% at 0.5 Hz (SVC)

  • Speed Accuracy: ±0.2% (SVC)

  • Integrated Safety: STO (Safe Torque Off)

  • Braking Unit: Built-in for smooth deceleration

  • Full Protection: Overvoltage, overload, overcurrent, overheating

  • Auto-Tuning: Static and dynamic motor tuning

  • Communication: RS485 with Modbus RTU/ASCII support

  • I/O Flexibility: Analog & digital inputs/outputs + relay outputs

  • Energy Efficiency: Supports common DC bus + consumption monitoring

  • Applications: HVAC, pumps, conveyors, compressors, manufacturing

  • Certifications: CE, UL, cUL, TÜV tested

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SKU: INVT.GD20.015G.4.EU Category: Tag:

Description

The INVT GD20-EU 37 kW 400 V three-phase frequency converter delivers precise motor control with V/f and sensorless vector control (SVC). Engineered for demanding industrial applications, it features integrated STO safety, a braking unit, flexible I/O, and advanced communication options for seamless automation integration.

Ideal for pumps, fans, conveyors, and other industrial motors requiring high torque and reliable operation.

Key Specifications

  • Motor Rated Power: 37 kW

  • Input Voltage: 3 Phase, 400V AC (±10%)

  • Control Modes: V/f Control and Sensorless Vector Control (SVC)

  • Speed Accuracy: ±0.2% (SVC mode)

  • Startup Torque: 150% at 0.5 Hz (SVC)

  • Overload Handling:
    ➤ 150% for 60 seconds
    ➤ 180% for 10 seconds
    ➤ 200% for 1 second

Versatile Motor Control & Application Flexibility

The INVT GD20-EU 37kW Inverter enables high-precision motor management for a wide range of industrial applications, including:

  • Pumps & Fans (HVAC, water treatment)

  • Conveyors & Transport Systems

  • Compressors & Machine Tools

  • Textile, Plastics, Printing & Packaging Equipment

  • Ceramic & Cable Manufacturing

With 16-step speed control, adjustable V/f curves (linear, multi-dot, multi-power, and separated V/f), and PID regulation, this 37 kW drive allows detailed customization based on load characteristics.

Integrated Safety & Robust Protection

  • Safe Torque Off (STO): Ensures safe motor shutdown during maintenance or emergencies.

  • Built-in EMC Filter (C3): Reduces electromagnetic interference and supports EMC compliance.

  • Integrated Braking Unit: Provides smooth deceleration without external components.

  • Complete Protection Suite: Against overcurrent, overvoltage, undervoltage, overheating, and overload.

Advanced I/O & Communication Options

  • RS485 Communication: Supports MODBUS RTU & ASCII protocols for seamless PLC, SCADA, or BMS integration.

  • Flexible I/O Configuration:

    • 2 Analog Inputs (0–10V, -10~+10V, 0–20mA)

    • 1 Analog Output (0–10V / 0–20mA)

    • 4 Digital Inputs + 1 High-Speed Input (up to 50 kHz)

    • 1 Digital Output + 2 Programmable Relay Outputs

  • External LED Keypad: Enables remote operation and easy parameter copy function.

  • Simple PLC Functions: Automate process sequences directly from the VFD.

Energy Efficiency & Monitoring

The INVT GD20-EU 37kW supports common DC bus configurations, enabling energy sharing across multiple drives to reduce total consumption. Its built-in energy monitoring function helps track power use without additional hardware.

Why Choose the INVT GD20 37kW Inverter?

  • High starting torque for heavy loads

  • Accurate speed control with ±0.2% precision

  • Reliable in fluctuating conditions with strong overload capabilities

  • Easy integration with automation systems

  • CE, UL, cUL, and TÜV certified for global standards compliance

  • Static & dynamic motor autotuning for plug-and-play commissioning

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) 37
Rated Current (A) 75
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 Analog: 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 filter, optional C2 filter (comply with IEC61800-3 C2, IEC61800-3 C3 requirements)
DC Reactor Integrated
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
Dimensions (mm) * Width x Height x Depth  / Weight 250mm x 400 mm x 202 mm / 15.5 kg

 

 

 

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FAQ

1. Which types of motors are compatible with the INVT GD20-EU 37 kW 400 V?
The INVT GD20-EU 37 kW  frequency converter is compatible with standard three-phase asynchronous (induction) motors. It supports both V/f control and sensorless vector control (SVC), delivering high starting torque and precise speed regulation for demanding applications.

2. Can the GD20-EU 37 kW be used in heavy-duty industrial environments?
Yes. The GD20-EU 37 kW is engineered for harsh industrial conditions. It includes robust protection against overvoltage, undervoltage, overcurrent, overload, and overheating, as well as an integrated braking unit and EMC filter for safe and reliable operation.

3. Does the INVT GD20-EU 37 kW include energy-saving functions?
Yes. The GD20-EU 37 kW features energy monitoring and supports common DC bus compatibility for energy sharing between multiple drives, helping optimize system efficiency and reduce power consumption.

4. What is the startup torque of the GD20-EU 37 kW?
The GD20-EU 37 kW provides up to 150 % torque at 0.5 Hz in sensorless vector control mode, making it ideal for conveyors, compressors, mixers, and other applications requiring high torque at low speeds.

5. What built-in safety features does the GD20-EU 37 kW offer?
Key safety functions of the GD20-EU 37 kW include:

  • Safe Torque Off (STO)

  • Integrated braking unit for controlled deceleration

  • Protection against overvoltage, undervoltage, overcurrent, overload, short circuits, and overheating

6. How can I communicate with the GD20-EU 37 kW from a PLC or SCADA system?
The GD20-EU 37 kW includes an RS485 port and supports Modbus RTU and ASCII protocols, enabling seamless integration with PLCs, HMIs, and SCADA systems.

7. Can the GD20-EU 37 kW control multiple speeds?
Yes. The GD20-EU 37 kW supports multi-step speed control (up to 16 speed levels) and includes a PID regulator for precise speed adjustment in pumps, fans, and process control applications.

8. Does the GD20-EU 37 kW support motor autotuning?
Yes. The GD20-EU 37 kW provides static and dynamic motor parameter autotuning, ensuring accurate configuration and optimized motor performance with minimal setup effort.

9. What certifications does the INVT GD20-EU 37 kW have?
The GD20-EU 37 kW is CE compliant, UL & cUL listed, and TÜV tested, guaranteeing adherence to global safety, EMC, and quality standards.

Related Documents

Documentation for INVT GD20-EU 3-Phase 400V 37 kW VFDs:

 

 

 

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