INVT GD20-004G-2 VFD for Small Machinery Drive

The INVT GD20-004G-2 VFD is a high-performance variable frequency drive designed for precise and efficient control of small machinery. Boasting a robust feature set and exceptional reliability, this VFD offers significant advantages in energy savings, enhanced operational control, and extended equipment lifespan. Its core strengths lie in its advanced vector control technology, comprehensive protection functions, and user-friendly interface, making it a superior choice for demanding industrial applications. Key technical parameters include a power rating of 0.4 kW, an input voltage range of 3-phase 380V/400V/440V, and an output frequency of 0-400 Hz, ensuring versatility across a wide spectrum of machinery requirements.

Product Specifications

| Parameter             | Specification                                      |

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

| Model                 | GD20-004G-2                                        |

| Rated Power           | 0.4 kW                                             |

| Input Voltage         | 3-Phase, 380V/400V/440V AC                         |

| Output Voltage        | 3-Phase, 0-Input Voltage AC                        |

| Rated Output Current  | 2.5 A                                              |

| Output Frequency      | 0-400 Hz                                           |

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

| Protection Features   | Overcurrent, Overvoltage, Undervoltage, Overtemp. |

| Dimensions (H x W x D)| 143 x 72 x 132 mm                                  |

| Mounting Type         | Wall-mounted                                       |

Core Features & Market Positioning

The INVT GD20-004G-2 distinguishes itself in the competitive small machinery drive market through its sophisticated sensorless vector control, providing superior torque response and precise speed regulation, even under varying load conditions. This advanced control algorithm minimizes the need for complex encoder feedback, simplifying system design and reducing costs. Its robust design incorporates advanced heat dissipation technology, ensuring stable operation in demanding environments and contributing to its extended operational life. Positioned as a premium yet cost-effective solution, the GD20 series, including the GD20-004G-2, offers industrial users a reliable and intelligent drive for optimizing machinery performance and energy efficiency. The drive's built-in communication protocols also facilitate seamless integration into automated systems.

Key Application Scenarios

This compact yet powerful Variable Frequency Drive (VFD) is ideally suited for a diverse range of small machinery applications where precise speed control and energy efficiency are paramount. Common use cases include driving small fans, pumps, conveyors, and machine tools in industries such as food processing, packaging, textiles, and light manufacturing. The GD20-004G-2’s ability to handle variable torque loads makes it particularly effective for centrifugal pumps and fans, where speed adjustments can lead to substantial energy savings. Its compact footprint and ease of installation also make it a preferred choice for retrofitting older equipment or integrating into space-constrained control panels.

Practical System Integration Guidance

Integrating the INVT GD20-004G-2 into your machinery control system is straightforward, thanks to its user-friendly design and comprehensive terminal configuration. For typical wiring, connect the incoming 3-phase power supply to terminals L1, L2, and L3. Motor connections are made to T1, T2, and T3. The digital inputs (DI1-DI4) and analog input (AI1) allow for external control signals, such as start/stop commands and speed setpoints, facilitating integration with PLCs or manual control interfaces. Basic parameter configuration can be performed via the integrated keypad and display, covering essential settings like motor parameters, acceleration/deceleration times, and overcurrent limits, ensuring rapid commissioning.

Operation and Risk Mitigation

Safe and efficient operation of the INVT GD20-004G-2 VFD is paramount to maximizing its benefits and ensuring equipment longevity. Always ensure the drive is correctly grounded and that motor wiring is properly insulated to prevent electrical hazards. Familiarize yourself with the drive's protection functions, such as overcurrent (OC), overvoltage (OV), undervoltage (UV), and overheat (OH) alarms, which are critical for preventing damage. For example, an OC fault typically indicates that the motor is drawing too much current, which could be due to excessive load, incorrect motor parameters, or a short circuit. Addressing these faults promptly by investigating the root cause will mitigate potential damage and downtime.

Scalability & Long-Term Value

The INVT GD20-004G-2 offers excellent scalability and long-term value, particularly through its compatibility with common industrial communication protocols such as Modbus. This enables seamless integration into larger supervisory control and data acquisition (SCADA) systems or industrial IoT (IIoT) platforms, allowing for remote monitoring, diagnostics, and control. While the GD20-004G-2 is optimized for small machinery, its underlying INVT technology platform provides a foundation for upgrading to more advanced drives within the INVT portfolio as application demands evolve, ensuring a future-proof investment in your automation infrastructure.

FAQs

What are the primary advantages of using the INVT GD20-004G-2 VFD?

The INVT GD20-004G-2 excels in precise motor speed control, crucial for optimizing machinery performance and reducing energy consumption through variable speed operation. Its advanced sensorless vector control ensures excellent torque accuracy and dynamic response, even without encoder feedback. Furthermore, its robust protection features safeguard connected equipment against electrical faults, enhancing operational reliability and extending component lifespan.

Can the INVT GD20-004G-2 be used with single-phase motors?

No, the INVT GD20-004G-2 is designed exclusively for three-phase motor applications. It requires a three-phase input power supply to operate correctly and to output a three-phase voltage to the motor. Using it with a single-phase motor or attempting to power it with a single-phase supply will result in damage to the drive and potentially the motor.

What are the typical applications for the INVT GD20-004G-2?

This VFD is highly effective for driving various small-scale industrial equipment such as centrifugal pumps, axial fans, small conveyors, and machine tools. Its precise speed regulation makes it ideal for applications requiring consistent performance under varying load conditions, common in sectors like food processing, packaging, and general manufacturing. It is also suitable for HVAC systems and other applications where variable flow or speed is beneficial.

How do I wire the INVT GD20-004G-2 for basic operation?

Connect the incoming three-phase power to terminals L1, L2, and L3 on the drive. The three output terminals for the motor are T1, T2, and T3; ensure these are connected to the motor's corresponding leads. It is crucial to follow the wiring diagrams precisely and ensure all connections are secure and properly insulated for safety.

What does an "OC" fault code signify on the INVT GD20-004G-2?

An "OC" fault code indicates an overcurrent condition detected by the VFD. This means the motor is drawing more current than the drive is programmed to allow, or more than is safe for the system. Common causes include excessive mechanical load on the motor, incorrect motor parameter settings within the VFD, or a short circuit in the motor windings or cabling.

How can the INVT GD20-004G-2 be integrated into a larger automation system?

The GD20-004G-2 supports communication protocols like Modbus RTU, enabling its integration with PLCs and SCADA systems for remote monitoring and control. Its digital and analog I/O terminals can also be used to interface with external controllers, sensors, and operator interfaces, allowing for flexible system design and expansion capabilities.

What is the power rating of the INVT GD20-004G-2?

The INVT GD20-004G-2 has a rated power output of 0.4 kW. This power rating is suitable for driving smaller motors commonly found in auxiliary machinery and specialized equipment within industrial settings. It provides efficient and controlled power for applications that do not require very high torque or speed.

What are the input voltage requirements for the GD20-004G-2?

The INVT GD20-004G-2 operates on a three-phase AC input voltage typically in the range of 380V, 400V, or 440V. It is essential to match the drive's input voltage rating to the available power supply in your facility to ensure correct operation and prevent damage to the unit. Always verify the specific voltage requirements before installation.

Does the INVT GD20-004G-2 support sensorless vector control?

Yes, the GD20-004G-2 features advanced sensorless vector control. This sophisticated control method allows the VFD to accurately regulate motor speed and torque without the need for a motor-mounted encoder, simplifying installation and reducing overall system cost. This capability significantly enhances its performance in dynamic applications.

How can I troubleshoot a common issue like slow acceleration with the GD20-004G-2?

Slow acceleration is often related to acceleration time parameters. You can typically adjust the acceleration time parameters (Acc) within the VFD's programming menu to shorten this period. If the motor is struggling to reach speed, also check the motor's rated current and ensure it is correctly entered in the drive's parameters, as well as verifying the load conditions are within the drive's capacity.