INVT GD20-0R4G-2 Three-Phase VFD Drive

The INVT GD20-0R4G-2 Three-Phase VFD Drive is engineered for robust performance and superior control in demanding industrial environments. This compact yet powerful Variable Frequency Drive (VFD) delivers exceptional energy efficiency, precise motor speed regulation, and enhanced operational reliability. With a 0.4kW (0.5 HP) power rating, a 3-phase input voltage range of 380-440V, and an output current capacity of 2.2A, the GD20-0R4G-2 is ideally suited for a wide array of applications requiring dynamic torque control and seamless integration. Its advanced features include built-in braking units for rapid deceleration, comprehensive protection functions to safeguard equipment, and flexible communication options for smart factory integration, positioning it as a leading solution for modern industrial automation.

INVT GD20-0R4G-2: Product Specifications

| Parameter                  | Specification                                    |

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

| Model                      | GD20-0R4G-2                                      |

| Power Rating               | 0.4 kW (0.5 HP)                                  |

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

| Output Current             | 2.2 A                                            |

| Output Frequency           | 0-400 Hz                                         |

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

| Overload Capacity          | 150% for 60 seconds                              |

| Braking Unit               | Built-in (up to 7.5kW models)                    |

| Communication Interfaces   | Standard RS485 (Modbus RTU)                      |

| Protection Functions       | Overcurrent, Overvoltage, Undervoltage, Phase Loss, Overload, Overtemperature, etc. |

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

| Dimensions (H x W x D)     | 160 x 76 x 136 mm (approximate)                  |

Core Features & Market Positioning

The INVT GD20-0R4G-2 stands out in the competitive VFD market due to its robust sensorless vector control, which provides excellent speed and torque accuracy even under varying load conditions. This advanced control algorithm allows for superior dynamic performance, making it a highly reliable choice for applications demanding precision. Compared to many standard V/f drives, the GD20 series offers significantly improved motor efficiency and reduced starting current, translating directly into operational cost savings for end-users. Its compact footprint and integrated braking unit (on models up to 7.5kW) simplify installation and reduce the need for external components, enhancing its value proposition in space-constrained applications. INVT's commitment to quality and performance positions the GD20 series as a dependable and cost-effective solution for small to medium-sized motor control needs across various industries.

Key Application Scenarios

The versatility of the INVT GD20-0R4G-2 makes it suitable for a broad spectrum of industrial applications. It excels in pump and fan control, where its precise speed regulation optimizes energy consumption and reduces mechanical stress on equipment. In material handling systems, such as conveyors and automated guided vehicles, the drive ensures smooth acceleration, deceleration, and accurate speed maintenance, crucial for efficient throughput. For machine tool applications, the GD20-0R4G-2 provides the necessary torque control and dynamic response for precise positioning and operational stability. It is also an excellent choice for packaging machinery, textile equipment, and general-purpose motor control where reliable and energy-efficient operation is paramount.

Practical System Integration Guidance

Integrating the INVT GD20-0R4G-2 into an existing system is streamlined by its user-friendly design and comprehensive documentation. For wiring, ensure the main power supply is correctly connected to the input terminals (L1, L2, L3) and the motor is connected to the output terminals (T1, T2, T3). Grounding the drive and motor properly is critical for safety and performance. Basic parameter configuration typically involves setting the motor's rated voltage, frequency, current, and poles to match the connected motor for optimal sensorless vector control. For communication, connect the RS485 interface to a master controller (e.g., PLC) using appropriate twisted-pair cabling and configure the drive's communication address and baud rate to match the network settings. Advanced setup, such as PID control for closed-loop applications or optimizing acceleration/deceleration ramps, can be achieved through intuitive parameter adjustments accessible via the drive's keypad or PC-based software.

Operation and Risk Mitigation

Safe and effective operation of the INVT GD20-0R4G-2 VFD necessitates adherence to its operational guidelines and understanding its protection features. Always ensure the drive is installed in a well-ventilated area, away from excessive dust, moisture, and extreme temperatures, to prevent overheating. Before powering up, double-check all wiring connections to prevent short circuits or incorrect phase sequencing, which can lead to fault conditions. The drive incorporates numerous protection mechanisms, including overload (OL), overvoltage (OV), undervoltage (UV), and phase loss (PHF) faults, which automatically shut down the motor to prevent damage. For instance, if the motor draws excessive current for an extended period, the overload protection will trigger a fault code to safeguard the motor and drive. Familiarizing yourself with the drive's fault code list in the manual allows for quick diagnosis and resolution of operational issues, minimizing downtime.

Scalability & Long-Term Value

The INVT GD20-0R4G-2 is designed with future-proofing in mind, offering a solid foundation for scalable automation solutions. Its standard Modbus RTU communication interface facilitates straightforward integration with supervisory control and data acquisition (SCADA) systems and programmable logic controllers (PLCs), enabling seamless inclusion in smart factory environments and the Industrial Internet of Things (IIoT) ecosystem. While this specific model is rated for 0.4kW, the GD20 series encompasses a wide range of power ratings, allowing for easy upgrades or expansion to larger motor applications within the same product family, ensuring consistency in control logic and user interface. This compatibility reduces re-engineering efforts and training requirements when scaling up production or upgrading machinery. INVT's ongoing development and commitment to technological advancement suggest that drives within the GD20 series will continue to offer value through firmware updates and ongoing support for evolving industrial standards.

Frequently Asked Questions (FAQs)

What is the maximum motor capacity for the INVT GD20-0R4G-2?

The INVT GD20-0R4G-2 is rated for a 0.4kW (0.5 HP) motor.

This power rating ensures efficient operation for smaller to medium-sized industrial equipment. It's crucial to match the VFD's capacity to the motor's nameplate for optimal performance.

Can I use the GD20-0R4G-2 with a single-phase motor?

No, the INVT GD20-0R4G-2 is a three-phase VFD designed to control three-phase motors.

It requires a three-phase power supply (380-440V AC) for input operation. Using it with a single-phase motor is not supported and could lead to damage.

What are the key protection features of the GD20-0R4G-2?

This VFD includes comprehensive protection like overcurrent, overvoltage, undervoltage, and phase loss protection.

It also safeguards against motor overload and drive over-temperature, crucial for equipment longevity. These features automatically shut down the drive to prevent damage.

How do I wire the INVT GD20-0R4G-2 to my motor?

Connect the motor's three power leads to the VFD's output terminals (T1, T2, T3).

Ensure the VFD's input power terminals (L1, L2, L3) are correctly connected to the three-phase power source. Proper grounding of both the VFD and motor is essential for safety.

Does the GD20-0R4G-2 support communication protocols for automation systems?

Yes, it features a standard RS485 interface supporting the Modbus RTU protocol.

This allows seamless integration with PLCs and SCADA systems for remote monitoring and control. Configuration of communication parameters is necessary for proper network operation.

What is the typical application for a 0.4kW VFD like the GD20-0R4G-2?

Common applications include small pumps, fans, conveyors, and smaller machine tools.

It's ideal for scenarios requiring variable speed control and energy savings on low-power motors. Precise speed regulation is a key benefit in these uses.

Can the GD20-0R4G-2 be used for dynamic braking?

Yes, the GD20-0R4G-2 (for models up to 7.5kW) includes a built-in braking unit.

This allows for rapid deceleration of the motor by dissipating energy into a braking resistor. It enhances stopping performance and safety in relevant applications.

What is the input voltage range for this VFD?

The INVT GD20-0R4G-2 operates on a three-phase input voltage of 380V to 440V AC.

It is crucial to ensure your power supply falls within this specified range for correct operation. Using voltages outside this range can cause malfunction or damage.

How do I perform basic parameter setup for the GD20-0R4G-2?

Set motor parameters such as rated voltage, frequency, current, and poles to match your motor.

Access these via the keypad or software and confirm settings for optimal sensorless vector control. Consult the manual for specific parameter details.

Is the GD20-0R4G-2 suitable for harsh industrial environments?

The drive is designed for industrial use but requires proper enclosure and ventilation.

It offers protection against common electrical faults but should be shielded from excessive dust, moisture, and extreme temperatures. An appropriate enclosure is recommended for optimal lifespan.