INVT GD20-7R5G-2 3-Phase Input Compact VFD Drive

The INVT GD20-7R5G-2 is a powerful 3-phase input compact Variable Frequency Drive (VFD) engineered for precise motor control and enhanced energy efficiency across diverse industrial applications. This VFD stands out with its robust design, advanced control algorithms, and user-friendly interface, making it an ideal choice for demanding operational environments. Key advantages include its ability to deliver exceptional torque performance, its compact footprint for space-constrained installations, and its integrated protection features for reliable operation. Technical specifications highlight a rated power of 7.5 kW (10 HP), an input voltage range of 380-440V AC, and an output frequency range of 0-600 Hz, supporting seamless integration into existing three-phase power systems.

Product Specifications

| Parameter              | Specification                                 |

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

| Model                  | GD20-7R5G-2                                   |

| Rated Power            | 7.5 kW / 10 HP                                |

| Input Voltage          | 380-440V AC (3-Phase)                         |

| Output Voltage         | 380V AC (3-Phase)                             |

| Output Frequency       | 0-600 Hz                                      |

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

| Overload Capacity      | 150% for 60 seconds, 180% for 10 seconds      |

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

| Communication          | RS485 (Modbus RTU)                            |

| Dimensions (W x H x D) | 180mm x 300mm x 195mm (Approximate)           |

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

Core Features & Market Positioning

The INVT GD20-7R5G-2 distinguishes itself through its sophisticated sensorless vector control, offering superior speed and torque accuracy without the need for motor encoders, thereby reducing system complexity and cost. This advanced control strategy, coupled with a high switching frequency, ensures smooth motor operation and excellent dynamic response, critical for applications requiring precise positioning or rapid load changes. Its compact and modular design facilitates easy integration into control panels, a significant advantage in space-limited industrial settings. Furthermore, the GD20 series is recognized for its robust build quality and comprehensive protection mechanisms, including overvoltage, undervoltage, overcurrent, and thermal overload protection, positioning it as a reliable and durable solution in competitive industrial automation markets.

Key Application Scenarios

This versatile VFD excels in a wide array of industrial applications where precise motor control and energy savings are paramount. It is particularly well-suited for driving pumps and fans, where its ability to modulate speed based on demand leads to significant energy reductions. Other common applications include conveyor systems, machine tools, packaging machinery, and textile machinery, all benefiting from the drive's accurate speed regulation and torque control. The GD20-7R5G-2's robust design and ability to operate in challenging environments make it a reliable choice for process industries such as water treatment, food and beverage, and manufacturing. Its integration capabilities, including standard RS485 communication, further enhance its utility in automated production lines.

Practical System Integration Guidance

Integrating the INVT GD20-7R5G-2 into an industrial system requires careful attention to wiring and parameter configuration. Ensure all power connections adhere strictly to the unit's voltage and phase requirements, utilizing appropriate gauge wiring and protective devices such as fuses or circuit breakers. Proper grounding is essential for safety and electromagnetic compatibility. For initial commissioning, it is recommended to configure basic parameters such as motor nameplate data (pole pairs, rated voltage, rated frequency, rated speed) and desired control mode (V/f or sensorless vector). Advanced features like acceleration/deceleration times, speed limits, and digital input/output assignments should be programmed according to the specific application requirements to optimize performance and ensure safe operation.

Operation and Risk Mitigation

Safe operation of the INVT GD20-7R5G-2 VFD necessitates adherence to installation guidelines and proper parameter settings. Always ensure the drive is powered down and de-energized before making any wiring changes or performing maintenance. Familiarize yourself with the drive's fault codes, which provide crucial diagnostic information for troubleshooting. Common error codes such as 'OL' (Overload) or 'OV' (Overvoltage) indicate specific operational issues that require prompt attention to prevent damage to the motor or the drive itself. Implementing appropriate braking resistors, if required by the application's regenerative energy profile, can also mitigate risks associated with rapid deceleration and overvoltage conditions.

Scalability & Long-Term Value

The INVT GD20-7R5G-2 offers excellent scalability and contributes to long-term operational value through its robust performance and integration capabilities. Its compatibility with various motor types, including induction motors, allows for flexible application across existing and new machinery. The integrated RS485 communication port enables seamless integration into supervisory control and data acquisition (SCADA) systems or other industrial networks, paving the way for enhanced monitoring, control, and data analysis, crucial for Industry 4.0 initiatives. This connectivity facilitates remote diagnostics and parameter adjustments, reducing downtime and maintenance costs over the product's lifecycle.

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Frequently Asked Questions (FAQs)

Q1: What are the primary benefits of using the INVT GD20-7R5G-2 VFD?

The INVT GD20-7R5G-2 offers significant energy savings by precisely controlling motor speed, matching output to load requirements. It provides advanced motor control capabilities, including sensorless vector control, ensuring excellent torque performance and accurate speed regulation. Its compact design simplifies installation in space-constrained environments, and integrated protection features enhance operational reliability and safety.

Q2: How do I wire the INVT GD20-7R5G-2 for a 3-phase motor?

Connect the incoming 3-phase power supply (L1, L2, L3) to the drive's input terminals (R, S, T). For the motor connection, wire the three motor phases (U, V, W) to the drive's output terminals (U, V, W). Ensure proper grounding of both the power supply and the motor to the designated ground terminals on the VFD.

Q3: What is sensorless vector control and how does it benefit this VFD?

Sensorless vector control allows the VFD to accurately control motor speed and torque without requiring an encoder feedback device. This simplifies the system, reduces installation costs, and enhances reliability. It is ideal for applications requiring fast dynamic response and precise speed holding under varying load conditions.

Q4: Can the INVT GD20-7R5G-2 be used with single-phase motors?

No, the INVT GD20-7R5G-2 is specifically designed for 3-phase input and 3-phase output to control 3-phase motors. It cannot be directly used with single-phase motors. You would need a different VFD model or a phase converter if a single-phase motor must be controlled.

Q5: What kind of protection features does this VFD offer?

This VFD includes comprehensive protection mechanisms such as overvoltage, undervoltage, overcurrent, overload, overtemperature, and short-circuit protection. These features safeguard both the VFD and the connected motor from damage due to abnormal operating conditions, enhancing system longevity.

Q6: How do I set up basic parameters for motor operation?

Essential parameters to configure include motor rated voltage, rated frequency, rated speed, and number of pole pairs, typically found on the motor's nameplate. You will also need to set the desired acceleration and deceleration times and select the appropriate control mode (V/f or sensorless vector) for your application.

Q7: What is the typical overload capacity of the GD20-7R5G-2?

The INVT GD20-7R5G-2 can handle a significant overload capacity, typically rated for 150% of its nominal current for 60 seconds and 180% for 10 seconds. This allows the drive to manage temporary peak loads without tripping, ensuring smooth operation during demanding start-ups or transient conditions.

Q8: Does this VFD support communication protocols for integration into automation systems?

Yes, the INVT GD20-7R5G-2 features an integrated RS485 communication port that supports the Modbus RTU protocol. This enables seamless integration with PLC systems, HMI panels, and other automation controllers for remote monitoring, control, and data acquisition.

Q9: What is the operating temperature range for the GD20-7R5G-2?

The INVT GD20-7R5G-2 is designed to operate within an ambient temperature range of -10°C to +40°C (14°F to 104°F). For optimal performance and longevity, it is important to ensure adequate ventilation and avoid operating the drive outside this specified temperature range.

Q10: What troubleshooting steps should I take if the VFD displays an error code?

When an error code appears, consult the VFD's user manual for a detailed explanation of the code and recommended actions. Common steps include checking power supply stability, verifying motor connections, ensuring proper cooling, and inspecting for mechanical issues in the driven load before resetting the drive.