INVT GD20-075G-4 High Efficiency Compact VFD for Medium Duty Fan & Pump

The INVT GD20-075G-4 represents a significant advancement in Variable Frequency Drive (VFD) technology, specifically engineered for medium-duty fan and pump applications. This compact, high-efficiency unit offers robust performance, intelligent control, and ease of integration, making it an ideal solution for HVAC systems, water supply networks, and general industrial ventilation. Its sophisticated design prioritizes energy savings, extended equipment lifespan, and simplified operational management.

Key technical specifications for the INVT GD20-075G-4 include a 7.5kW (10HP) power rating, operating on a 3-phase 380V-460V input power supply. It boasts an output frequency range of 0-400Hz and an impressive overload capacity of 120% for 60 seconds, ensuring reliable operation under demanding conditions. The drive features a built-in EMC filter, reducing electromagnetic interference, and supports multiple control modes, including V/f control and sensorless vector control, catering to diverse application requirements. Its compact dimensions (240mm x 150mm x 173mm) and IP20 protection rating further enhance its suitability for space-constrained installations.

Product Specifications

| Parameter                 | Specification                                        |

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

| Model                     | GD20-075G-4                                          |

| Rated Power               | 7.5 kW (10 HP)                                       |

| Input Voltage             | 3-Phase, 380V - 460V AC                              |

| Output Frequency Range    | 0 - 400 Hz                                           |

| Overload Capacity         | 120% for 60 seconds                                  |

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

| Protection Rating         | IP20                                                 |

| Dimensions (H x W x D)    | 240mm x 150mm x 173mm                                |

| Built-in EMC Filter       | Yes                                                  |

| Communication Options     | Optional fieldbus modules (e.g., Modbus)             |

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

| Humidity                  | 5% to 95% RH (non-condensing)                        |

| Altitude                  | Up to 1000m without derating                         |

Core Features & Market Positioning

The INVT GD20-075G-4 distinguishes itself through its high efficiency, particularly in energy-intensive fan and pump duties, translating directly into reduced operational costs for end-users. Its advanced sensorless vector control algorithm provides excellent torque response and precise speed regulation, even with varying load conditions, a critical advantage over simpler V/f control drives. The integrated EMC filter simplifies installation by minimizing electromagnetic noise, which is crucial in sensitive environments. Market positioning focuses on delivering a reliable, cost-effective, and feature-rich VFD for medium-duty applications where performance and efficiency are paramount. This drive competes effectively by offering a robust feature set typically found in higher-tier models at a competitive price point.

Key Application Scenarios

This VFD is exceptionally well-suited for centrifugal and axial fan applications in building automation and industrial HVAC, where precise airflow control and energy savings are essential. For pump systems, it excels in variable speed water supply, boosting, and circulation, optimizing pressure and flow while significantly reducing energy consumption. Typical industrial uses include ventilation systems in manufacturing plants, air handling units in commercial buildings, and water treatment facilities. The GD20-075G-4's adaptability allows it to seamlessly integrate into diverse setups, from single fan/pump units to more complex networked systems requiring precise speed synchronization and load management.

Practical System Integration Guidance

Integrating the INVT GD20-075G-4 into an existing system is straightforward due to its user-friendly interface and flexible connectivity options. For wiring, ensure proper grounding of the drive chassis and motor for safety and performance. The power terminals accept standard industrial wiring, and the control terminals allow for easy connection of external start/stop signals, speed reference potentiometers, or digital inputs. Basic parameter setup involves configuring motor data (e.g., rated voltage, current, frequency) and desired control modes. For advanced integration, optional communication modules like Modbus RTU can be installed, enabling seamless integration into SCADA or building management systems (BMS) for remote monitoring and control. Always refer to the official manual for detailed wiring diagrams and parameter configuration.

Operation and Risk Mitigation

Safe operation of the INVT GD20-075G-4 requires adherence to electrical safety standards and proper installation practices. Ensure the VFD is installed in a well-ventilated area, away from flammable materials, and that all power sources are disconnected before performing any maintenance or wiring. Key operational considerations include monitoring motor temperature and drive status through the HMI or communication interface. Common troubleshooting involves checking for error codes displayed on the HMI. For instance, an "Overcurrent" fault (often code F001) might indicate a rapid acceleration setting that is too aggressive or a motor issue, while an "Overvoltage" fault (F002) could suggest regenerative braking is needed or the input voltage is too high. Proper parameter tuning, especially for acceleration/deceleration times and motor data, significantly mitigates operational risks and optimizes performance.

Scalability & Long-Term Value

The INVT GD20-075G-4 offers a degree of scalability and long-term value through its compatibility with a wide range of motors and its ability to integrate into advanced control architectures. Its modular design with optional communication cards allows for future upgrades to digital control systems, including IIoT platforms for predictive maintenance and performance analytics. While not designed for extreme heavy-duty loads, its medium-duty rating ensures longevity and reliability within its specified operational envelope. The energy savings realized through efficient operation contribute directly to a lower total cost of ownership, making it a sound investment for facilities seeking to optimize energy expenditure and operational efficiency over the lifespan of their fan and pump systems.

FAQs

What is the primary application for the INVT GD20-075G-4?

This VFD is primarily designed for medium-duty fan and pump applications.

It excels in HVAC systems, offering precise airflow control.

It's also ideal for variable speed water supply and circulation.

Can the INVT GD20-075G-4 be used with any motor?

It is compatible with standard 3-phase AC induction motors.

Accurate motor data configuration is crucial for optimal performance.

Always ensure the motor's power and voltage ratings match the VFD's capabilities.

How does the GD20-075G-4 improve energy efficiency?

It precisely matches motor speed to the system demand.

This variable speed operation significantly reduces energy consumption.

Its high-efficiency design minimizes power loss during operation.

What are the typical installation requirements?

Install in a well-ventilated area, avoiding dust and moisture.

Ensure proper electrical grounding for safety and performance.

Follow wiring diagrams in the user manual meticulously.

Does the INVT GD20-075G-4 include an EMC filter?

Yes, it comes with a built-in EMC filter.

This helps reduce electromagnetic interference in sensitive environments.

Proper grounding of the drive and motor is still recommended.

What control modes does this VFD support?

It supports V/f control for simple applications.

Sensorless vector control offers enhanced speed and torque precision.

These modes cater to a wide range of operational needs.

How can I integrate the GD20-075G-4 into a network?

Optional communication modules, like Modbus, are available.

These modules enable integration with SCADA and BMS.

This allows for remote monitoring and control capabilities.

What is the overload capacity of this VFD?

It can handle 120% of its rated current for 60 seconds.

This ensures reliable operation during transient load increases.

It's suitable for applications with occasional peak demands.

What is the IP rating of the INVT GD20-075G-4?

The drive has an IP20 protection rating.

This means it is protected against solid objects larger than 12.5mm.

It is suitable for indoor industrial environments with dust protection.

Where can I find troubleshooting information for the GD20-075G-4?

Refer to the official INVT user manual for detailed guides.

The drive's HMI displays error and fault codes.

Common issues often relate to parameter settings or motor connections.