INVT GD20-055G-4-B Goodrive20 General Purpose 55kW Three Phase 400V High Torque Drive B

The INVT GD20-055G-4-B Goodrive20 is a powerful 55kW, three-phase, 400V high torque drive designed for demanding industrial applications. This advanced variable frequency drive (VFD) delivers exceptional performance, energy efficiency, and robust control for a wide range of machinery. Its core advantages lie in its superior motor control algorithms, ensuring precise speed and torque regulation even under fluctuating loads, and its compact, user-friendly design. Key technical parameters include a rated power of 55kW, an input voltage of 400V three-phase, and an output frequency range of 0-600Hz, supporting a maximum output current of 110A. The GD20 series is engineered for reliability and ease of integration, making it a preferred choice for optimizing industrial processes.

Product Specifications

| Parameter               | Specification                               |

| :---------------------- | :------------------------------------------ |

| Model                   | GD20-055G-4-B                               |

| Rated Power             | 55 kW (75 HP)                               |

| Input Voltage           | 400V AC (Three Phase)                       |

| Output Voltage          | 0-400V AC (Three Phase)                     |

| Rated Output Current    | 110 A                                       |

| Output Frequency Range  | 0.00 Hz – 600.00 Hz                         |

| Control Method          | V/f Control, Sensorless Vector Control      |

| Overload Capacity       | 150% rated current for 60 seconds           |

| Protection Grade        | IP20                                        |

| Dimensions (H x W x D)  | 540mm x 280mm x 260mm                       |

| Ambient Temperature     | -10°C to +40°C (derating above 40°C)        |

Core Features & Market Positioning

The INVT GD20-055G-4-B distinguishes itself through its advanced sensorless vector control, offering precise torque and speed accuracy comparable to closed-loop systems, even with asynchronous motors. This capability positions it as a high-value solution for applications requiring dynamic response and consistent performance. The drive boasts a modular design, facilitating maintenance and expansion, a key differentiator in the competitive VFD market. Its robust construction and comprehensive protection features, including extensive alarm and fault handling, ensure operational stability and longevity, appealing to industries prioritizing uptime and reliability. Furthermore, its energy-saving features, such as optimized flux vector control and automatic energy saving functions, contribute to reduced operational costs.

Key Application Scenarios

The INVT GD20-055G-4-B is ideally suited for a broad spectrum of industrial machinery requiring high starting torque and precise speed control. Common applications include large fan and pump systems, conveyors, extruders, and machine tools, where its 55kW power rating and advanced control capabilities are paramount. Industries such as manufacturing, water treatment, and material handling benefit significantly from its ability to optimize process efficiency and reduce energy consumption. Its robust performance in handling variable loads makes it an excellent choice for applications like plastic injection molding machines and textile machinery, where consistent torque output is critical. The drive's flexibility also extends to HVAC systems, providing sophisticated control for building automation.

Practical System Integration Guidance

Integrating the INVT GD20-055G-4-B into existing systems is streamlined due to its standard mounting dimensions and flexible communication options. Wiring the drive involves connecting the three-phase input power to terminals L1, L2, L3, and the three-phase motor output to T1, T2, T3. Control terminals accommodate digital inputs for start/stop commands, direction control, and external fault signals, as well as analog inputs for speed reference. For programming, users can access parameters via the integrated keypad or through optional communication modules (e.g., Modbus, Profibus) for seamless integration into SCADA or PLC systems. Basic commissioning involves setting motor parameters, selecting the control mode (V/f or sensorless vector), and configuring speed reference and acceleration/deceleration times.

Operation and Risk Mitigation

Safe operation of the INVT GD20-055G-4-B mandates adherence to electrical safety standards during installation and maintenance. Ensure the drive is properly grounded and that all power sources are de-energized before making any connections. Key operational considerations include monitoring drive temperature and ambient conditions to prevent overheating, as the IP20 rating requires installation within an enclosure. Common troubleshooting involves checking for error codes displayed on the panel, such as "Overcurrent" (OC) or "Overvoltage" (OV), which often indicate issues with motor load, wiring, or power supply stability. Frequent fault codes and their resolutions are detailed in the product manual, but basic checks include verifying motor connections, input voltage, and parameter settings before seeking technical support.

Scalability & Long-Term Value

The INVT GD20-055G-4-B offers inherent scalability and long-term value through its compatibility with advanced industrial automation trends. Its support for various industrial communication protocols allows for seamless integration into networked control systems and IIoT platforms, enabling remote monitoring, diagnostics, and data analysis. This integration facilitates predictive maintenance strategies and optimizes overall plant efficiency. The modular design of the GD20 series also allows for future upgrades or the addition of peripheral modules, such as braking units or communication cards, without requiring a complete system overhaul. This forward-thinking design ensures that the drive remains a relevant and cost-effective component of evolving industrial infrastructures.

Frequently Asked Questions

What is the maximum motor size this drive can control?

The INVT GD20-055G-4-B is rated for a 55kW motor. This equates to approximately 75 horsepower.

It is crucial to match the drive's power rating to the motor's nameplate specifications for optimal performance and longevity.

Exceeding the drive's rated capacity can lead to overload faults and potential damage.

How do I perform basic parameter setup for a new motor?

Access the motor parameter menu using the keypad. Enter the motor's rated voltage, current, frequency, speed, and power factor.

The drive also requires information on stator resistance and inductance for sensorless vector control.

Accurate motor data entry is vital for achieving optimal torque control and energy efficiency.

What are the common causes of an "Overcurrent" fault (OC)?

An OC fault typically indicates that the motor is drawing more current than the drive is designed to supply.

This can be caused by a motor overload, rapid acceleration settings, or short circuits in the motor or cabling.

Check the motor's load, review acceleration ramp times, and inspect wiring for any potential shorts.

Can this drive be used with a single-phase motor?

No, the INVT GD20-055G-4-B is designed exclusively for three-phase motors.

It requires a three-phase input power supply (400V) and outputs a three-phase supply to the motor.

Using it with a single-phase motor will result in damage to the motor and the drive.

What is the primary advantage of sensorless vector control?

Sensorless vector control provides precise torque and speed regulation without requiring a motor encoder.

This offers dynamic performance, improved starting torque, and faster response to load changes.

It simplifies installation and reduces costs by eliminating the need for additional feedback devices.

How can I connect external control signals to the drive?

Use the drive's digital input terminals for functions like start/stop and forward/reverse. Connect analog signals to the analog input terminals for speed or torque reference.

Ensure proper wiring according to the terminal diagram in the product manual.

Configuration of these inputs is done via the drive's parameter settings.

What is the enclosure rating of this drive?

The INVT GD20-055G-4-B has an IP20 enclosure rating.

This means it provides protection against solid objects larger than 12.5mm but offers no protection against water.

It must be installed in a suitable enclosure to protect it from dust and moisture in industrial environments.

What communication protocols does this drive support for integration?

The GD20 series typically supports standard protocols like Modbus RTU. Optional communication cards may be available for other protocols.

Check the specific model or consult the product documentation for exact protocol support.

This enables integration into SCADA, PLC, and DCS systems for remote control and monitoring.

How does this drive contribute to energy savings?

The drive optimizes motor speed based on actual load requirements, significantly reducing energy consumption compared to fixed-speed operation.

Features like automatic energy saving functions and optimized flux vector control further enhance efficiency.

This leads to lower electricity bills and a reduced carbon footprint for industrial operations.

What are the typical installation requirements for this drive?

Install the drive vertically in a clean, dry, and well-ventilated location, away from heat sources and corrosive substances.

Ensure adequate clearance around the drive for heat dissipation and access for maintenance.

Adhere to all local electrical codes and grounding requirements during installation.