INVT GD20-0R7G-S2 Single-Phase Inverter VFD

The INVT GD20-0R7G-S2 Single-Phase Inverter VFD is engineered for robust performance and efficient motor control in a wide array of industrial applications. This compact yet powerful Variable Frequency Drive (VFD) offers seamless integration and advanced features, making it a leading choice for precise speed regulation and energy savings. Key advantages include its high starting torque, comprehensive protection functions, and user-friendly interface. The GD20-0R7G-S2 boasts a rated power of 0.75kW (1HP), operates on a single-phase 200-240V input, and delivers a three-phase 200-240V output. Its output frequency range extends from 0.00Hz to 3000.00Hz, with an adjustable control mode supporting both V/f control and sensorless vector control for enhanced dynamic response. The inverter's compact design facilitates easy installation in tight spaces, while its intelligent thermal management ensures reliable operation even under demanding conditions. This single-phase input VFD is designed to drive three-phase asynchronous motors, maximizing efficiency and operational flexibility.

Product Specifications

| Parameter                 | Specification                                   |

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

| Model                     | GD20-0R7G-S2                                    |

| Input Voltage             | Single-Phase 200-240V AC                          |

| Output Voltage            | Three-Phase 200-240V AC                           |

| Rated Power               | 0.75kW (1HP)                                    |

| Output Frequency Range    | 0.00Hz - 3000.00Hz                              |

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

| Starting Torque (Sensorless Vector) | 150% at 1.0Hz                                   |

| Overload Capacity         | 150% rated current for 60s (Type B)             |

| Communication Interface   | Standard RS485 (Optional)                       |

| Protection Functions      | Overvoltage,Undervoltage, Overcurrent, Overtemperature, etc. |

| Ambient Temperature       | -10°C to +40°C                                  |

| Storage Temperature       | -20°C to +60°C                                  |

| Humidity                  | 0-95% RH (Non-condensing)                       |

| Altitude                  | Up to 1000m (derating above)                    |

| Protection Rating         | IP20                                            |

Core Features & Market Positioning

The INVT GD20-0R7G-S2 distinguishes itself in the market through its advanced sensorless vector control algorithm, which delivers superior torque performance and precise speed regulation, even at very low frequencies. This capability, coupled with its robust overload handling, positions it as a high-performance solution for applications that demand consistent power delivery and rapid response to load changes. Compared to standard V/f control drives, the GD20-0R7G-S2 offers a significant improvement in motor efficiency and dynamic performance, making it a more cost-effective choice in the long run due to energy savings and reduced wear on motor components. INVT's commitment to reliability is evident in the drive's comprehensive protection mechanisms, safeguarding both the motor and the drive itself against common electrical disturbances, thereby enhancing operational uptime. Its intuitive keypad and parameter structure also streamline setup and operation, broadening its appeal to a diverse user base from experienced engineers to maintenance personnel.

Key Application Scenarios

This single-phase input VFD is exceptionally well-suited for a variety of industrial and commercial applications where precise motor control and energy efficiency are paramount. Common use cases include driving pumps for water supply, HVAC systems, and irrigation, where variable speed operation can lead to substantial energy savings and optimized performance. It is also ideal for fans in ventilation systems, ensuring optimal airflow while minimizing power consumption. The GD20-0R7G-S2 finds application in conveyor systems and material handling equipment, where smooth acceleration and deceleration are crucial for product integrity and operational safety. Furthermore, its capabilities extend to machine tools, textile machinery, and packaging equipment, providing the necessary torque and speed precision for demanding manufacturing processes. The ability to drive three-phase motors from a single-phase supply makes it a versatile solution for smaller workshops or facilities not equipped with a three-phase power source.

Practical System Integration Guidance

Integrating the INVT GD20-0R7G-S2 into existing systems is straightforward, thanks to its standard mounting dimensions and clear terminal designations. For wiring, ensure the input power supply is correctly connected to the L and N terminals for single-phase power. The motor leads (U, V, W) should be connected to the corresponding output terminals. It is crucial to use shielded motor cables to minimize electromagnetic interference (EMI), especially in environments with sensitive electronic equipment. Grounding connections must be robust to ensure safety and optimal performance. When configuring parameters, it is recommended to start with the factory default settings and then adjust motor-specific parameters (such as rated voltage, rated frequency, rated speed, and motor poles) for optimal performance. For sensorless vector control, fine-tuning parameters like acceleration/deceleration times and current limits will enhance the drive's dynamic response. The built-in keypad allows for local control and parameter adjustment, while the optional RS485 communication port enables integration into SCADA systems or remote monitoring solutions.

Operation and Risk Mitigation

Safe operation of the INVT GD20-0R7G-S2 VFD requires adherence to established electrical safety practices. Before performing any wiring or maintenance, always disconnect the main power supply and allow the internal DC bus capacitors to discharge. The drive is equipped with multiple protection functions, including overcurrent, overvoltage, undervoltage, and motor overheat protection, which will trigger fault codes if anomalies are detected. Common fault codes such as 'OC' (Overcurrent), 'OV' (Overvoltage), 'UV' (Undervoltage), and 'OH' (Overheat) indicate specific issues that need to be addressed. For 'OC' faults, verify motor load and cable length. For 'OV' or 'UV' faults, check the input power supply stability. Addressing 'OH' requires checking motor cooling and ambient temperature. It is essential to consult the user manual for a complete list of fault codes and their corresponding troubleshooting steps. Proper ventilation around the drive is critical to prevent overheating and ensure its longevity.

Scalability & Long-Term Value

The INVT GD20-0R7G-S2 VFD offers a foundation for scalable motor control solutions. Its compatibility with standard communication protocols like Modbus (via RS485) facilitates its integration into larger automated systems and Industry 4.0 initiatives, enabling centralized control and data acquisition. For applications requiring more advanced features or higher power ratings, INVT provides a broad portfolio of VFDs that can seamlessly integrate with the GD20 series, ensuring a consistent operational philosophy across different machine types. The drive's energy-saving capabilities contribute significantly to long-term operational cost reduction, making it a valuable investment. Furthermore, INVT's focus on robust design and component quality ensures a reliable and extended service life, minimizing the need for premature replacements and supporting sustainable industrial operations.

FAQs

  What is the primary advantage of the INVT GD20-0R7G-S2?

    The INVT GD20-0R7G-S2 offers exceptional performance through its advanced sensorless vector control, providing high starting torque and precise speed regulation. This technology ensures efficient motor operation and responsiveness critical for demanding applications.

    Its robust design and comprehensive protection features enhance reliability, minimizing downtime and extending the lifespan of both the VFD and the connected motor. This integrated approach to performance and durability makes it a cost-effective solution.

    Furthermore, the drive's ability to operate from a single-phase input while controlling a three-phase motor provides significant flexibility, making it suitable for a wider range of installations and power supply constraints.

  How do I wire the INVT GD20-0R7G-S2 for a single-phase input and three-phase motor?

    Connect the single-phase AC input power to terminals L and N on the VFD. Ensure these connections are secure and rated for the drive's input voltage and current.

    The three-phase motor leads (typically labeled U, V, W) should be connected to the corresponding output terminals on the VFD, also labeled U, V, W. It is crucial to use shielded cables and ensure proper grounding for both the drive and the motor.

    Always refer to the product manual for specific wiring diagrams and safety precautions. Verify all connections before applying power to prevent damage or electrical hazards.

  What are the typical applications for the GD20-0R7G-S2?

    This VFD is ideal for variable torque applications like pumps and fans in HVAC systems, water supply, and ventilation, where speed control directly impacts energy consumption.

    It also serves well in constant torque applications such as conveyors, material handling equipment, and certain machine tools, requiring precise speed and torque management for consistent operation.

    Its ability to drive three-phase motors from a single-phase supply makes it a popular choice for smaller industrial machinery, packaging equipment, and workshops that may not have three-phase power readily available.

  Can the GD20-0R7G-S2 be controlled remotely?

    Yes, the INVT GD20-0R7G-S2 can be controlled remotely, particularly when equipped with the optional RS485 communication interface.

    This allows integration into larger automation systems or SCADA networks, enabling centralized monitoring and control of multiple drives from a central location using protocols like Modbus.

    Remote control can also be achieved through digital inputs for start/stop commands and analog inputs for speed setpoints, offering flexibility in system design.

  What is the rated power and voltage of the INVT GD20-0R7G-S2?

    The inverter has a rated power of 0.75kW, which is equivalent to 1 horsepower (HP). This rating indicates the continuous power output capability for driving motors.

    Its input voltage requirement is single-phase AC, ranging from 200V to 240V. This makes it suitable for standard single-phase power supplies commonly found in commercial and light industrial settings.

    The output voltage is three-phase AC, also within the 200V to 240V range, enabling it to drive standard three-phase asynchronous motors effectively.

  How do I set up motor parameters on the GD20-0R7G-S2?

    Access the parameter menu via the keypad interface and navigate to the motor parameter settings section. You will need to input the motor's nameplate data accurately.

    Key parameters include rated voltage, rated frequency, rated speed (RPM), and the number of motor poles. For sensorless vector control, precise values are critical for optimal performance.

    After entering the data, it is recommended to perform an auto-tuning process if available, or at least a manual motor identification sequence to calibrate the VFD to the specific motor characteristics.

  What are common fault codes for the GD20-0R7G-S2 and how to address them?

    Common fault codes include OC (Overcurrent) and OV (Overvoltage). OC typically indicates the motor is drawing too much current, possibly due to overload or excessive acceleration.

    UV (Undervoltage) and OH (Overheat) are also frequent. UV suggests an unstable or low input power supply, while OH indicates the drive or motor is exceeding safe operating temperatures.

    Addressing these requires checking motor load, input power stability, cable connections, and ensuring adequate ventilation. Refer to the user manual for specific troubleshooting steps for each code.

  Does the GD20-0R7G-S2 support sensorless vector control?

    Yes, the INVT GD20-0R7G-S2 supports sensorless vector control as one of its primary control modes.

    This advanced control method allows the VFD to achieve high torque at low speeds without the need for a motor-mounted encoder, simplifying installation and reducing costs.

    Sensorless vector control provides superior dynamic response and tighter speed regulation compared to standard V/f control, making it suitable for more demanding applications.

  What is the protection rating (IP) of this inverter?

    The INVT GD20-0R7G-S2 has an IP20 protection rating.

    This rating signifies that the enclosure provides protection against solid objects greater than 12.5mm in diameter, such as a finger, and offers no protection against water.

    Therefore, it should be installed in a clean, dry environment, away from moisture, dust, and corrosive substances, typically within an enclosure or control panel.

  Can this VFD drive a three-phase motor from a single-phase power source?

    Yes, this is a primary function of the INVT GD20-0R7G-S2. It is specifically designed to take a single-phase 200-240V AC input and output a three-phase 200-240V AC supply.

    This capability is highly beneficial for applications where only single-phase power is available but a three-phase motor is required or preferred for its performance characteristics.

    This allows for the use of a wider range of motors and machinery in locations or facilities that are not equipped with three-phase electrical infrastructure.