INVT GD20-EU 18.5 kW Frequency Inverter (400 V Three-Phase VFD)

Description

The INVT GD20-EU 18.5 kW (400 V three-phase) variable frequency drive offers reliable and energy-efficient control for industrial motors in OEM and automation environments. Designed for compact installations, it combines precise motor speed regulation with advanced safety features such as Safe Torque Off (STO) and a built-in brake chopper. Supporting both V/f and sensorless vector control (SVC), the GD20-EU 18.5 kW ensures stable torque and smooth performance even under variable load conditions.

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Key Specifications

• Motor Rated Power: 18.5 kW

• Supply Voltage: 400V AC ±10%, 3 Phase

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

• Speed Accuracy: ±0.2% in SVC mode

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

• Overload Capacity:
  ➤ 150% for 1 min
  ➤ 180% for 10 s
  ➤ 200% for 1 s

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Performance & Control Capabilities

The GD20-EU 18.5kW 3 phase inverter is designed to power large motors with stable and accurate speed regulation. Whether you are running pumps, HVAC systems, compressors, conveyors, or industrial machines, the GD20-EU 18.5 kW ensures reliable motor control with:

• Up to 16 programmable speed steps

• PID controller for temperature, pressure, and flow regulation

• Adjustable V/f curves: linear, multi-dot, multi-power, and V/f separation

• Simple PLC functionality for logic-based operation without an external controller

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Safety, Efficiency, and Protection

• STO (Safe Torque Off): Hardware-based safety function that immediately stops motor torque, supporting machine safety requirements

• Built-in braking unit for safe deceleration under load

• Integrated EMC C3 filter to reduce electrical noise

• Advanced protection mechanisms including:

  • Overvoltage

  • Undervoltage

  • Overcurrent

  • Overheating

  • Overload protection

This level of system protection ensures consistent and failure-resistant operation even in harsh environments.

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Connectivity & Communication

The INVT GD20-EU 18.5kW supports seamless integration into existing control and monitoring systems:

• RS485 interface with Modbus RTU & ASCII protocols

• PC communication via INVT Workshop Software and USB-RS485 adapter

• Flexible I/O configuration, including:

  • 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

An external LED keypad with parameter copy feature simplifies commissioning and parameter transfer between units.

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Energy Monitoring & Smart Features

• Battery capacity display shows total energy consumption over time – no additional meters required

• Common DC bus compatibility allows energy sharing between multiple inverters

• Auto-tuning of motor parameters (static and dynamic) ensures optimal drive performance and efficiency

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Application Compatibility

The GD20-EU 18.5kW is ideal for a wide range of industrial sectors and systems:

• Textile and printing machines

• Water treatment and pumping systems

• Packaging and plastic processing

• Food & beverage production

• HVAC and air handling systems

• Woodworking, ceramics, compressors, and cable manufacturing

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Certifications & Quality Standards

• CE certified

• TÜV SÜD tested

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Why Choose the INVT GD20-EU 18.5kW 400V Inverter?

• Powerful and precise control for large motors

• Compact design and DIN-rail mountable

• Advanced I/O and communication features

• High overload capacity and robust construction

• Ideal for industrial automation and energy-saving retrofits

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

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