5.5kW INVT GD350A frequency inverter front view, 3 phase 400V
5.5kW INVT GD350A frequency inverter front view, 3 phase 400V
Right side of VFD 5.5kW INVT GD350A inverter, 3 phase 400V model
Left side view of INVT GD350A 5.5kW VFD 3 phase 400V inverter
Top view of INVT GD350A 5.5kW 3 phase 400V inverter showing cooling fans
Bottom view of VFD 5.5kW INVT GD350A 3 phase 400V inverter

INVT GD350A 5.5 kW VFD | 400 V 3-Phase Inverter (Dual-Rating)

CHF 445.00 excl. VAT, free Shipping

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  • Power Rating: 5.5 kW (Normal Duty) / 4 kW (Heavy Duty)

  • Input Voltage: 3-phase 400V AC (380–440V, ±10%)

  • Control Modes: V/F, Sensorless Vector Control (SVC), Vector Control (VC)

  • Starting Torque: Up to 200% at 0 Hz (VC)

  • Speed Accuracy: ±0.2% (SVC), ±0.02% (VC)

  • Built-in STO Safety Function (Safe Torque Off)

  • Uninterrupted Operation during short power interruptions

  • Expandable Design with optional PLC, I/O, and communication cards

  • Modbus Standard, optional: CAN, Profibus DP, Profinet

  • IoT Ready: Remote control via Bluetooth/WiFi and INVT-Workshop app

  • Built-in Braking Chopper and EMC Filter (Category C3)

  • PC Connectivity: USB & Ethernet for easy configuration

  • Flexible I/O: Digital, analog, pulse inputs/outputs, relays

  • Applications: Pumps, HVAC, conveyors, machine tools, textiles, food processing

 

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SKU: GD350A-004G/5R5P-4 Category: Tag:

Description

The INVT GD350A 5.5 kW (400 V 3-phase) dual-rating variable frequency drive (VFD) delivers precise and reliable control for both asynchronous and synchronous motors. Engineered for demanding industrial applications, the GD350A 5.5 kW combines advanced vector control, integrated safety functions, and flexible connectivity options, making it ideal for pumps, fans, conveyors, and OEM machinery requiring high performance and durability.

Key Specifications – INVT GD350A 5.5 kW Dual-Rating

  • Power Rating: 5.5 kW (Normal Duty), 4 kW (Heavy Duty)

  • Input Voltage: 3-phase 380–440 V AC (±10%)

  • Output Frequency: 0–590 Hz

  • Control Modes: V/F, Sensorless Vector Control (SVC), Full Vector Control (VC) for asynchronous and synchronous motors

  • Speed Accuracy: ±0.2% (SVC), ±0.02% (VC)

  • Starting Torque:

    • Asynchronous: 0.25 Hz / 150% (SVC)

    • Synchronous: 2.5 Hz / 150% (SVC), 0 Hz / 200% (VC)

  • Torque Precision: 10% (SVC), 5% (VC)

Advanced Motor Control

  • Auto-Tuning: Optimizes motor parameters for stable operation under varying loads

  • Continuous Operation: Maintains motor function during short power interruptions using stored energy

  • Low-Speed Torque: Robust I/F control for precise industrial applications

  • Dynamic Speed Control: Smooth transitions with minimal current surges

  • High-Precision Positioning: ±1 pulse accuracy for robotics or automation requiring exact positioning

Connectivity and Integration

  • Communication Protocols: Modbus RTU & ASCII standard; optional CAN, Profibus DP, Profinet

  • Interfaces: Two high-density pulse inputs for precise speed control

  • IoT Ready: Optional Bluetooth and WiFi for remote monitoring via INVT Workshop app (up to 30 m)

  • PC Connectivity: USB-RS485 adapter, Ethernet, or remote channels (UDP, MQTT) for parameter setting and data analysis

  • Data Export: Standard USB port for operation and maintenance reports

Safety and Protection Features

The INVT GD350A 5.5 kW dual-rating drive provides robust safety and protection for industrial motors:

  • Safe Torque Off (STO): Instantly stops the motor during maintenance or emergency

  • Over 30 protective functions: Guards against overcurrent, overvoltage, undervoltage, overheating, phase loss, and overload

  • Heavy-duty overload tolerance: Up to 200% for 1 second, ensuring durability in demanding industrial environments

Additional Benefits

  • Multiple braking modes: Dynamic, DC, magnetic, and short-circuit braking for controlled motor deceleration

  • Built-in C3 EMC filters: Reduce electromagnetic interference without additional installation space

  • Multi-motor control: Operate multiple asynchronous motors simultaneously

  • Expandable design: Optional slots for PLC, I/O, communication, and feedback cards allow customized control solutions

  • User-friendly LCD panel: Multi-line, multi-language display for clear monitoring and parameter adjustment

Typical Applications

The GD350A 5.5 kW is ideal for a wide range of industrial applications:

  • Pumps, HVAC systems, and compressors

  • Conveyor belts and material handling systems

  • Machine tools, packaging machines, and textile equipment

  • Food processing lines and renewable energy applications

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

Ethernet/IP, Profinet, CAN Master/Slave, etc. (extension card is needed), Modbus RTU & ASCII
Control Methods

SVPWM, SVC (Sensorless Vector Control), VC (Vector Control with Encoder)
Dual Rating Capability

Dual Rating
EMC Filter

Input Voltage

Motor Compatibility

Asynchronous Motors, Synchronous motors
Mounting Type

Wall and Flange Mounting
Safety Features

User Interface

Multi-function LCD keypad

Specification

P (Normal Duty) Motor Rated Power kW 5.5
Rated Current A 12
G (Heavy Duty) 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 in G setting (Heavy Duty), 120% for 60s in P setting (Normal Duty)
Output Frequency 0 … 590 Hz
Control Inputs  Analog: 2 inputs (AI1: 0 … 10 V / 0(4) … 20 mA; AI2: -10 … 10 V), optionally expandable
Digital: 6 programmable inputs, including 2 high-speed inputs (50 kHz) for speed setpoint or actual value via incremental or pulse encoders, optionally expandable
Control Outputs  Analog: 1 programmable output 0 … 10 V / 0(4) … 20 mA, optionally expandable
Digital: 2 programmable outputs, one of them high-speed (50 kHz), potential-free, optionally expandable
Relays: 2 programmable changeover contacts (NO/NC), optionally expandable
Interfaces RS485 (terminals) as standard, up to 3 freely configurable option interfaces for communication modules, terminal expansions, feedbacks, and PLC cards
Brake Chopper Integrated
EMC Filter Integrated IEC61800-3 C3; IEC61800-3 C1 & C2 optional
DC Reactor –
Safety Functions Two-channel STO (Safe Torque Off) (IEC61800-5-2, SIL2, PL “d”)
Protection Rating IP20, optional IP55
Ambient Temperature -10°C … +50°C; power reduction required if ambient temperature exceeds +40°C, air cooling
Certification CE, TÜV
Dimensions 126 mm x 186 mm x 201 mm

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FAQ

Q1: What is the input voltage for the INVT GD350A 5.5 kW 400 V?
The INVT GD350A 5.5 kW supports a three-phase input voltage range of 380–440 V AC (±10%), making it compatible with standard European industrial networks.

Q2: Can the GD350A 5.5 kW handle heavy-duty loads?
Yes, the GD350A 5.5 kW provides 5.5 kW for normal duty and 4 kW for heavy-duty operation, with overload tolerance up to 200% for short intervals, suitable for demanding industrial processes.

Q3: Does the GD350A 5.5 kW support sensorless vector control?
Yes, the GD350A 5.5 kW supports both sensorless vector control (SVC) and full vector control (VC), ensuring precise motor speed and torque management.

Q4: Is the GD350A 5.5 kW suitable for precise speed control applications?
Absolutely. With speed accuracy of ±0.2% (SVC) and ±0.02% (VC), the GD350A 5.5 kW is ideal for high-precision industrial applications.

Q5: How does the GD350A 5.5 kW handle power interruptions?
The GD350A 5.5 kW is designed to maintain motor operation during short power outages by utilizing stored energy, preventing process disruptions.

Q6: What communication protocols are supported by the GD350A 5.5 kW?
Standard Modbus RTU is included, with optional support for CAN, Profibus DP, and Profinet via extension cards, allowing seamless integration into industrial control systems.

Q7: Can the GD350A 5.5 kW be expanded?
Yes, the GD350A 5.5 kW can be enhanced with optional PLC cards, I/O modules, communication cards, and feedback devices through its three expansion slots.

Q8: How can I configure or monitor the GD350A 5.5 kW?
Configuration is possible via the GD350A LCD control panel or a PC using the INVT Workshop software through USB, Ethernet, or wireless connections.

Q9: Is the GD350A 5.5 kW safe for industrial use?
Yes, it features Safe Torque Off (STO) functionality and over 30 protective functions, including overcurrent, overvoltage, undervoltage, overheating, and overload protections.

Q10: What applications is the GD350A 5.5 kW suitable for?
The GD350A 5.5 kW 400 V is perfect for pumps, HVAC systems, conveyors, machine tools, packaging machines, textile machines, food processing, and renewable energy systems.

Related Documents

Documentation for INVT GD350A 5.5 kW 400 V 3-phase

 

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