INVT GD350A-2500G-4 Industrial High Power VFD Drive

The INVT GD350A-2500G-4 Industrial High Power VFD Drive represents a significant advancement in motor control technology, engineered for demanding industrial applications. This Variable Frequency Drive (VFD) boasts a robust power output, specifically 2500 kW (approximately 3350 HP), designed to deliver precise speed and torque control for large-scale machinery. Key advantages include exceptional energy efficiency, superior motor protection capabilities, and a highly intuitive operational interface. Its core features encompass advanced V/f control, vector control with sensorless operation, and a comprehensive suite of programmable I/O, making it a versatile solution for a wide range of industrial processes. The GD350A-2500G-4 operates with a nominal input voltage of 400V (or 480V, depending on region), a 4-pole motor compatibility, and an impressive efficiency rating that translates directly into operational cost savings.

Product Specifications

| Parameter             | Specification                               |

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

| Model Number          | GD350A-2500G-4                              |

| Rated Power           | 2500 kW                                     |

| Input Voltage         | 400V/480V (configurable)                    |

| Output Frequency Range| 0-3000 Hz                                   |

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

| Overload Capacity     | 150% for 60 seconds, 180% for 30 seconds    |

| Protection Features   | Overcurrent, Overvoltage, Undervoltage, Overtemperature, Phase Loss, etc. |

| Communication Options | Modbus RTU, optional Profibus, DeviceNet, EtherNet/IP |

| Enclosure Rating      | IP20 (standard, upgradeable)                |

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

Core Features & Market Positioning

The INVT GD350A-2500G-4 distinguishes itself in the high-power VFD market through its advanced control algorithms and robust design, prioritizing reliability and performance. Its sensorless vector control capability offers precise torque and speed regulation without the need for motor encoders, simplifying installation and reducing potential points of failure. This feature is critical for applications where maintenance access is challenging or environmental conditions can affect encoder performance. Furthermore, the drive's modular design facilitates maintenance and future upgrades, a key consideration for long-term industrial investments. INVT positions the GD350A series as a cost-effective yet high-performance alternative to premium brands, targeting industries that require dependable, efficient, and powerful motor control without unnecessary complexity. The emphasis on user-friendly parameter settings and diagnostic tools also lowers the barrier to entry for operators and maintenance personnel.

Key Application Scenarios

The high power rating and advanced control features of the INVT GD350A-2500G-4 make it exceptionally well-suited for a variety of heavy-duty industrial applications. It is an ideal choice for driving large centrifugal pumps in water treatment plants and oil and gas facilities, where precise flow control and energy savings are paramount. In the mining and metallurgy sector, it can effectively manage large crushers, mills, and conveyor systems, benefiting from the VFD's ability to handle high starting torques and operate reliably in harsh environments. The cement industry also benefits from its application in large fan and kiln drives, where precise speed adjustment leads to optimized production processes and reduced energy consumption. Other significant applications include large compressors in industrial air systems, extruders in plastic manufacturing, and heavy-duty fans in power generation.

Practical System Integration Guidance

Integrating the INVT GD350A-2500G-4 into an existing industrial system requires careful attention to power, control, and communication wiring. The high power rating necessitates robust power cabling, appropriately sized to handle the drive's output current and minimize voltage drop. It is crucial to ensure proper grounding of both the drive and the motor to mitigate electrical noise and ensure safety. For control wiring, using shielded twisted-pair cables for analog inputs and digital signals is recommended to prevent electromagnetic interference. The drive supports standard communication protocols like Modbus RTU, allowing seamless integration with Programmable Logic Controllers (PLCs) and Supervisory Control and Data Acquisition (SCADA) systems. Commissioning involves configuring key parameters such as motor nameplate data, acceleration/deceleration times, and speed limits, often guided by the drive's intuitive keypad interface or INVT's dedicated software. A factory reset to default parameters before initial setup is a good practice to ensure a clean slate.

Operation and Risk Mitigation

Safe and efficient operation of the INVT GD350A-2500G-4 relies on adhering to operational guidelines and understanding potential fault conditions. Before initial power-up, a thorough pre-operation checklist must be completed, including verifying all wiring connections, ensuring proper motor rotation direction, and confirming the absence of mechanical obstructions. During operation, operators should monitor key parameters such as output current, voltage, and temperature via the drive's display or connected HMI to detect any anomalies early. The GD350A-2500G-4 is equipped with comprehensive protection functions, including overcurrent, overvoltage, undervoltage, motor overload, and drive overtemperature. Common fault codes, such as "OC" (Overcurrent) or "OV" (Overvoltage), typically indicate issues with motor load, power supply fluctuations, or incorrect parameter settings, requiring prompt investigation and corrective action as outlined in the product manual. Always ensure the drive is powered down and de-energized before performing any maintenance or troubleshooting.

Scalability & Long-Term Value

The INVT GD350A-2500G-4 is designed with scalability and long-term value in mind, offering flexibility for evolving industrial needs. Its modular construction allows for the addition of optional communication cards, expanding compatibility with various industrial networks such as Profibus, DeviceNet, or EtherNet/IP, facilitating integration into modern Industrial Internet of Things (IIoT) platforms. This adaptability ensures that the drive can remain a core component of a plant's automation strategy even as communication standards change. Furthermore, INVT's commitment to firmware updates ensures that the drive benefits from ongoing performance enhancements and new features. The drive's robust design and high-quality components contribute to a long operational lifespan, reducing the total cost of ownership through minimized downtime and replacement cycles. Its ability to precisely control motor speed and torque also translates into significant energy savings over the equipment's life, adding to its long-term economic value.

Frequently Asked Questions

What is the primary function of the INVT GD350A-2500G-4?

The INVT GD350A-2500G-4 is a high-power Variable Frequency Drive (VFD) designed to control the speed and torque of industrial electric motors. It precisely adjusts the motor's operating speed by modifying the frequency and voltage of the power supplied to it.

This VFD is crucial for applications requiring variable motor speeds, leading to significant energy savings and improved process control. It allows users to optimize machinery performance according to specific operational demands, reducing wear and tear on equipment.

Key benefits include enhanced energy efficiency, reduced mechanical stress on motors and driven equipment, and precise process regulation in sectors like manufacturing, mining, and utilities.

How does the sensorless vector control of the GD350A-2500G-4 benefit industrial applications?

Sensorless vector control allows the GD350A-2500G-4 to achieve accurate torque and speed regulation without requiring an encoder on the motor. This significantly simplifies installation and reduces costs by eliminating the need for an additional sensor and its associated cabling.

This advanced control method is vital in challenging industrial environments where encoders might be susceptible to damage from dust, moisture, or extreme temperatures. It ensures reliable performance even in harsh conditions, minimizing downtime.

The absence of an encoder also streamlines maintenance, as there is one less component to inspect, calibrate, or replace, making the overall system more robust and easier to manage over its operational life.

What are the typical industrial sectors that utilize the INVT GD350A-2500G-4?

The GD350A-2500G-4 is extensively used in heavy industries requiring high-power motor control, such as mining and metallurgy for driving crushers and mills. It is also prevalent in water and wastewater treatment facilities for large pump applications.

Other key sectors include cement production, where it manages fans and kilns, and the oil and gas industry for applications like large compressors. Its versatility supports various heavy-duty machinery in manufacturing plants as well.

Industries benefiting from this VFD prioritize precise process control, energy efficiency for large loads, and robust performance in demanding operational environments.

What power rating does the INVT GD350A-2500G-4 offer?

The INVT GD350A-2500G-4 offers a substantial rated power of 2500 kW, which is equivalent to approximately 3350 horsepower. This high power capacity makes it suitable for controlling very large industrial electric motors.

This power level is essential for applications involving heavy machinery that requires significant starting torque and continuous high-output operation, such as large fans, pumps, compressors, and mills.

The 2500 kW rating ensures that the VFD can reliably handle the demanding power requirements of industrial processes without compromising performance or drive longevity.

Can the INVT GD350A-2500G-4 be integrated with existing industrial automation systems?

Yes, the GD350A-2500G-4 is designed for seamless integration with various industrial automation systems. It typically supports standard communication protocols like Modbus RTU out-of-the-box.

For more advanced integration, optional communication modules are available, allowing connectivity with networks such as Profibus, DeviceNet, and EtherNet/IP, facilitating connection to SCADA and PLC systems.

This adaptability ensures that the VFD can be incorporated into existing or new automation architectures, supporting IIoT initiatives and remote monitoring capabilities.

What are the key advantages of using the INVT GD350A-2500G-4 over standard motor starters?

The primary advantage is significant energy savings, as the VFD precisely matches motor speed to load requirements, unlike fixed-speed starters. This also reduces mechanical stress on machinery.

It offers superior process control by enabling precise speed and torque adjustments, leading to improved product quality and operational efficiency. Protection features also enhance motor longevity.

The GD350A-2500G-4 provides advanced diagnostics and fault logging, simplifying troubleshooting and maintenance compared to simpler motor starting methods.

What is the input voltage range for the GD350A-2500G-4 drive?

The INVT GD350A-2500G-4 is designed to operate with an input voltage of either 400V or 480V, depending on the specific regional power grid configuration. This flexibility allows for widespread deployment across different electrical systems.

Users must ensure the drive is configured for the correct input voltage during installation to prevent damage and ensure optimal performance. The drive's internal settings usually accommodate these common industrial voltage standards.

Verification of the site's power supply voltage against the selected drive model's specifications is a critical step during the planning and installation phases.

How does the GD350A-2500G-4 handle overload conditions?

The GD350A-2500G-4 is built to withstand temporary overload conditions, offering 150% of its rated current for up to 60 seconds and 180% for 30 seconds. This capability is crucial for applications with high starting torque demands or transient load spikes.

These overload ratings ensure that the drive can reliably start and operate demanding machinery without tripping due to momentary excesses in current. It provides a buffer for applications where precise current management is not always feasible.

However, sustained operation beyond these limits will trigger protective shutdowns to prevent damage to the drive and motor, underscoring the importance of correct motor sizing and application assessment.

What safety features are integrated into the GD350A-2500G-4?

The drive incorporates comprehensive protection functions, including overcurrent, overvoltage, undervoltage, motor overload, and drive overtemperature protection. These are critical for preventing damage to the VFD and the connected motor.

It also includes safety features like phase loss detection on both input and output sides, grounding fault protection, and short-circuit protection, ensuring a safe operating environment and protecting connected equipment.

For enhanced safety in critical applications, features like Safe Torque Off (STO) might be available through optional modules or specific configurations, allowing for immediate and safe shutdown of motor power.

What maintenance is typically required for the INVT GD350A-2500G-4?

Regular maintenance involves visual inspections of connections, cleaning dust and debris from cooling fans and heatsinks, and checking for any signs of wear or damage. Periodic checks of terminal tightness are also recommended.

Monitoring operational parameters and fault logs can help identify potential issues before they cause downtime. Firmware updates, when available from INVT, should be considered to maintain optimal performance and access new features.

It is essential to follow the manufacturer's guidelines for periodic maintenance schedules and procedures, always ensuring the drive is de-energized before performing any physical checks or interventions.