INVT GD200A-004G/5R5P-4 Fan & Pump Inverter VFD

The INVT GD200A-004G/5R5P-4 Fan & Pump Inverter VFD stands as a robust solution for variable speed drive applications in the HVAC and water management sectors, offering significant energy savings and precise control. This Variable Frequency Drive (VFD) excels with its integrated filter, dual-mode operation, and advanced control algorithms designed specifically for fan and pump loads. Its core advantages lie in its energy efficiency, enhanced reliability, and user-friendly interface, making it a preferred choice for industrial and commercial installations demanding optimized performance and reduced operational costs. Key technical parameters include a power rating of 5.5kW (7.5HP), input voltage of 3-phase 380-440V, and output frequency range of 0-400Hz, all within a compact and durable enclosure.

Product Specifications

| Parameter             | Specification                               |

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

| Model                 | GD200A-004G/5R5P-4                          |

| Rated Power           | 5.5 kW / 7.5 HP                             |

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

| Output Voltage        | 3-Phase 380V-440V AC                        |

| Output Frequency      | 0-400 Hz                                    |

| Rated Output Current  | 13.0 A                                      |

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

| Integrated Filter     | Yes (C3 Class EMC Filter)                   |

| Protection Features   | Overload, Overvoltage, Undervoltage, Short Circuit, Overheat, etc. |

| Communication         | RS485 (Modbus RTU)                          |

| Dimensions (WxHxD)    | 170 x 295 x 195 mm                          |

| Weight                | 7.5 kg                                      |

Core Features & Market Positioning

The INVT GD200A-004G/5R5P-4 distinguishes itself through its specialized design for fan and pump applications, incorporating features that directly address the unique demands of these systems. Its built-in C3 class EMC filter significantly reduces electromagnetic interference, simplifying installation in sensitive environments and meeting stringent industrial standards. The dual-mode operation, allowing for both sensorless vector control and V/f control, provides flexibility to optimize performance across various load conditions, from precise flow control to simple speed adjustments. Market positioning of the GD200A series often highlights its cost-effectiveness without compromising on advanced functionalities, offering a compelling value proposition for projects where energy efficiency and reliable operation are paramount. This focus on application-specific optimization makes it a competitive alternative to more generalized VFDs.

Key Application Scenarios

This inverter is ideally suited for a wide array of fan and pump applications across various industries. In HVAC systems, it facilitates precise control of air handling units, exhaust fans, and circulation pumps, leading to substantial energy savings by matching motor speed to actual demand. For water supply and sewage systems, the GD200A-004G/5R5P-4 enables constant pressure control, preventing water hammer and optimizing pump operation for irrigation, municipal water distribution, and wastewater treatment plants. Its robust design and protection features also make it suitable for industrial process cooling fans, circulating pumps in manufacturing, and general-purpose fluid transfer applications where variable speed control is beneficial for efficiency and wear reduction.

Practical System Integration Guidance

Integrating the INVT GD200A-004G/5R5P-4 into existing systems is streamlined due to its standard mounting dimensions and clear terminal layout. For power wiring, ensure the input power supply is correctly connected to terminals L1, L2, and L3, and the motor is connected to T1, T2, and T3. Grounding the unit to terminal PE is crucial for safety and EMC performance. For control wiring, utilize terminals such as DI1-DI6 for digital inputs (e.g., start/stop, fault reset), AI1/AI2 for analog voltage or current input to set speed references, and AO1 for analog output of motor speed or frequency. The integrated RS485 communication port allows for seamless integration into SCADA systems or Building Management Systems (BMS) using the Modbus RTU protocol for remote monitoring and control. Basic parameter setup typically involves configuring motor data (rated power, voltage, current, frequency), and selecting the appropriate control mode (V/f or sensorless vector) based on the application's requirements.

Operation and Risk Mitigation

Safe operation of the INVT GD200A-004G/5R5P-4 VFD necessitates adherence to electrical safety standards and the manufacturer's guidelines. Ensure proper ventilation around the unit to prevent overheating, as the ambient temperature should ideally not exceed 40°C. Before powering up, always verify motor connections and ensure there are no short circuits. During operation, monitor for common fault codes displayed on the HMI. For instance, an "Overload Fault (OC)" might indicate the motor is drawing too much current, potentially due to incorrect motor parameters, undersized wiring, or excessive mechanical load. An "Overvoltage Fault (OV)" could signify a braking resistor is needed for applications with significant regenerative energy, or that the input voltage is too high. Regular maintenance, including checking for dust accumulation and ensuring all connections are tight, will further mitigate operational risks and ensure longevity.

Scalability & Long-Term Value

The INVT GD200A-004G/5R5P-4 offers excellent long-term value through its compatibility and potential for system expansion. Its RS485 communication interface supports integration with a wide range of industrial automation platforms and IIoT solutions, enabling advanced data logging, remote diagnostics, and predictive maintenance capabilities. While this specific model is designed for 5.5kW applications, INVT's broader GD200A series provides scalable solutions for higher power requirements, allowing for seamless upgrades as facility needs evolve. The modular design principles employed by INVT often ensure that firmware updates and accessory compatibility are maintained across product generations, safeguarding investment and ensuring the VFD remains a relevant component in evolving industrial landscapes.

Frequently Asked Questions

What are the primary benefits of using the INVT GD200A-004G/5R5P-4 for fan applications?

This VFD optimizes fan performance by precisely controlling motor speed to match airflow demand, resulting in significant energy savings compared to traditional fixed-speed systems. Its specialized algorithms reduce mechanical stress on fan components by providing smooth acceleration and deceleration.

The integrated EMC filter minimizes electrical noise, ensuring reliable operation in environments with sensitive electronic equipment and simplifying compliance with electromagnetic compatibility standards.

Its robust design and comprehensive protection features, including overload and overheat protection, enhance operational safety and reduce the risk of premature equipment failure, extending the lifespan of the fan system.

How does the GD200A-004G/5R5P-4 handle pump control to maintain constant pressure?

The inverter utilizes its sensorless vector control mode along with an analog input for pressure feedback to precisely adjust pump speed. This allows for maintaining a stable system pressure, eliminating fluctuations and water hammer issues common with direct-on-line motor starts.

By dynamically matching pump output to system demand, it prevents unnecessary energy consumption, offering substantial cost reductions in water supply, irrigation, and industrial fluid transfer systems.

The precise speed control also reduces wear and tear on pump seals and impellers, contributing to lower maintenance costs and increased reliability of the overall pumping system.

What are the essential wiring considerations for the INVT GD200A-004G/5R5P-4?

Proper power wiring involves connecting the 3-phase input voltage to terminals L1, L2, and L3, and the motor leads to T1, T2, and T3, ensuring correct phase sequence. Always connect the ground terminal (PE) for safety and noise reduction.

For control signals, utilize digital inputs (DI) for commands like start/stop and fault resets, and analog inputs (AI) for speed references from sensors or controllers. Ensure analog outputs (AO) are correctly wired if feedback signals are required.

When using the RS485 communication port for Modbus RTU, connect the A and B lines correctly to your master device and ensure proper termination resistors are in place if the bus length is significant.

How can I prevent overvoltage faults (OV) when using this VFD with pumps?

Overvoltage faults can occur during deceleration when the motor's inertia generates back EMF, feeding energy back into the VFD. If your application involves significant inertia, consider installing an external braking resistor to dissipate this excess energy.

Ensure the input voltage supply to the VFD is within its specified operating range. Fluctuations or consistently high mains voltage can also trigger OV faults, so verifying supply stability is important.

Some VFDs have adjustable overvoltage protection parameters. Consult the manual to see if these can be finely tuned for your specific application, though this should be done with caution and expert understanding.

What is the recommended procedure for motor parameter setup on the GD200A-004G/5R5P-4?

After connecting the motor, you must enter its nameplate details, including rated power, voltage, frequency, and current, into the VFD's parameters. This is crucial for the VFD to accurately control the motor.

Perform an auto-tuning function if available. This process allows the VFD to learn the motor's electrical characteristics (like inductance and resistance) for optimized performance, especially in sensorless vector control mode.

Verify the motor rotation direction after setup. If it's incorrect, you can usually reverse it by swapping any two of the motor leads (T1, T2, T3) or by changing a parameter setting within the VFD.

Can the INVT GD200A-004G/5R5P-4 be controlled remotely via a network?

Yes, the VFD is equipped with an RS485 communication port that supports the Modbus RTU protocol. This allows for seamless integration into industrial networks and building management systems for remote monitoring and control.

Using Modbus RTU, you can transmit commands like start/stop, change speed references, monitor operational status, and read fault codes from a remote location via a PLC or SCADA system.

This capability is essential for modern industrial automation and IIoT applications, enabling centralized control, data acquisition, and remote diagnostics, thereby improving operational efficiency.

What is the role of the integrated C3 class EMC filter?

The C3 class EMC filter is designed to suppress high-frequency electrical noise generated by the VFD's switching operation. This significantly reduces electromagnetic interference emitted by the drive, preventing it from affecting other sensitive electronic equipment in the vicinity.

By incorporating the filter directly into the unit, INVT simplifies installation and reduces the need for additional external components, saving space and installation costs. It helps the VFD comply with demanding industrial electromagnetic compatibility standards.

This feature is particularly important in applications like HVAC or water treatment plants where control systems, sensors, and communication networks are often located close to the motor drives.

How does sensorless vector control differ from V/f control on this VFD?

Sensorless vector control provides more precise control over motor speed and torque, even at low speeds or under varying load conditions, without the need for a motor-mounted encoder. It's ideal for applications requiring accurate flow or pressure regulation.

V/f control is a simpler method where the voltage-to-frequency ratio is kept constant. It's generally suitable for basic speed control applications where high precision is not critical, such as simple fan or pump speed adjustments.

The GD200A-004G/5R5P-4's dual-mode capability allows users to select the control strategy that best fits the specific requirements of their fan or pump application, optimizing both performance and energy efficiency.

What are common troubleshooting steps for an "Overload Fault (OC)" on this inverter?

First, verify that the motor parameters entered into the VFD accurately reflect the motor's nameplate specifications. Incorrect parameters are a frequent cause of perceived overload.

Inspect the driven equipment (fan or pump) for any mechanical issues. Binding, excessive friction, or debris in the system can increase the load on the motor beyond its rated capacity.

Check the wiring between the VFD and the motor for any loose connections or signs of damage. Also, ensure the motor itself is in good condition and not experiencing internal faults.

What safety precautions should be taken before working on or around the GD200A-004G/5R5P-4?

Always disconnect the main power supply to the VFD and wait for the internal DC bus capacitors to discharge completely, which typically takes several minutes, before performing any wiring or maintenance.

Ensure the VFD is properly grounded to prevent electrical shock and to ensure effective noise suppression. Follow all local electrical codes and regulations during installation and maintenance.

Avoid touching any internal components unless you are a qualified technician. High voltages are present inside the unit even after power is removed, posing a significant safety risk.