INVT GD350A-045G/055P-4 VFD for High Speed Motor Drive

The INVT GD350A-045G/055P-4 VFD redefines high-speed motor control, offering unparalleled performance and precision for demanding industrial applications. Engineered for optimal efficiency, this Variable Frequency Drive (VFD) boasts advanced control algorithms, a robust design, and comprehensive protection features. Its core strengths lie in its ability to deliver precise speed regulation, enhanced torque control, and significant energy savings, making it an indispensable component for modern manufacturing and processing. Key technical parameters include a power rating of 45kW/55kW (045G/055P), an input voltage range of 380-460V AC, and an output frequency range of 0-1000Hz, designed specifically for high-speed motor applications. The GD350A series also incorporates advanced features such as built-in braking units, multiple communication protocols, and a user-friendly interface for seamless integration and operation.

Product Specifications

| Feature                 | Specification                               |

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

| Model                   | GD350A-045G/055P-4                          |

| Power Rating            | 45kW (045G) / 55kW (055P)                   |

| Input Voltage           | 380-460V AC (3-phase)                       |

| Output Voltage          | Input Voltage ±10%                          |

| Output Frequency        | 0 - 1000 Hz                                 |

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

| Overload Capacity       | 120% rated current for 60s (General Drive), 150% rated current for 60s (Inverter Drive) |

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

| Communication Options   | RS485 (Modbus), Optional fieldbus modules   |

| Braking Unit            | Built-in (for 7.5kW and above)              |

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

| Dimensions (H x W x D)  | Specific to model variant, consult datasheet |

Core Features & Market Positioning

The INVT GD350A-045G/055P-4 stands out in the high-speed motor drive market due to its sophisticated sensorless vector control, enabling exceptional speed accuracy and dynamic response crucial for applications requiring rapid acceleration and deceleration. Its ability to achieve output frequencies up to 1000Hz positions it as a premium solution for specialized machinery, far exceeding the capabilities of standard VFDs. This VFD is engineered with advanced thermal management systems, ensuring reliable operation even under continuous heavy loads, a key differentiator in harsh industrial environments. INVT’s focus on energy efficiency through optimized PWM strategies and precise motor parameter auto-tuning further solidifies its market position as a cost-effective and high-performance choice for businesses aiming to reduce operational expenditures.

Key Application Scenarios

This VFD is ideally suited for high-speed applications across various industries, including textile machinery, such as high-speed spinning and weaving machines, where precise speed control is paramount for product quality. In the plastics and rubber industry, it excels in driving extruders and high-speed mixers that demand rapid and stable speed adjustments. Furthermore, the GD350A-045G/055P-4 finds extensive use in woodworking machinery, metal processing, and packaging equipment that rely on accurate and dynamic motor speed for optimal throughput and material handling. Its robust design and wide frequency range also make it suitable for centrifugal fans, pumps, and compressors operating at elevated speeds, leading to significant energy savings.

Practical System Integration Guidance

Integrating the INVT GD350A-045G/055P-4 into existing systems is streamlined by its flexible communication options and clear terminal designations. For optimal performance, ensure proper wiring, adhering to the specified input and output cable lengths and types to prevent electrical noise interference, especially critical for high-frequency operation. Programming the VFD involves navigating through intuitive parameter groups, where key settings like acceleration/deceleration times, speed references, and motor protection parameters can be configured. For high-speed applications, it is crucial to verify the motor's suitability for the VFD's output frequency and to utilize appropriate motor insulation and cooling measures. The built-in braking unit (for relevant models) requires careful connection to a braking resistor to manage regenerative energy effectively during deceleration.

Operation and Risk Mitigation

Safe operation of the INVT GD350A-045G/055P-4 hinges on understanding its comprehensive protection mechanisms and adhering to strict installation guidelines. Key safety protocols include ensuring proper grounding, adequate ventilation to prevent overheating, and isolating the drive when performing maintenance. Users should familiarize themselves with common fault codes, such as 'Overcurrent' (e.g., F01), 'Overvoltage' (e.g., F02), and 'Overtemperature' (e.g., F03), which indicate specific operational issues that require immediate attention and troubleshooting according to the user manual. Regularly inspecting motor and drive connections, monitoring operational parameters through the HMI, and performing periodic maintenance will significantly mitigate risks and ensure longevity.

Scalability & Long-Term Value

The INVT GD350A-045G/055P-4 offers considerable scalability and long-term value through its compatibility with various industrial automation platforms and its support for IIoT integration. The availability of optional communication modules, such as PROFIBUS or DeviceNet, allows for seamless integration into existing SCADA and PLC systems, facilitating centralized control and monitoring. This VFD’s robust hardware design and INVT's commitment to firmware updates ensure that it remains a relevant and reliable component in evolving industrial landscapes, supporting smart factory initiatives and predictive maintenance strategies. Its energy efficiency also contributes to long-term cost savings, enhancing the overall return on investment.

Frequently Asked Questions

What is the maximum output frequency of the INVT GD350A-045G/055P-4?

The INVT GD350A-045G/055P-4 is designed for high-speed motor applications. It offers an impressive output frequency range of 0 to 1000 Hz. This capability is crucial for specialized machinery requiring extremely fast rotational speeds.

This wide frequency range allows for fine-tuning motor performance. It is ideal for applications like high-speed centrifuges or specialized textile machinery. Such precise control ensures optimal product quality and process efficiency.

Achieving such high frequencies demands robust internal components. The VFD's design includes advanced cooling and power electronics to sustain reliable operation. This ensures longevity and consistent performance under demanding conditions.

What are the key benefits of using sensorless vector control in this VFD?

Sensorless vector control provides highly accurate speed and torque regulation. It achieves this without requiring a motor-mounted encoder. This simplifies installation and reduces overall system cost.

This control method offers excellent dynamic performance. It allows for rapid acceleration and deceleration of the motor. This is critical for applications with frequent load changes or tight process timing.

The GD350A-045G/055P-4 leverages this technology for superior motor response. It ensures consistent speed output even under varying load conditions. This translates to improved product consistency and operational stability.

How does the built-in braking unit in the GD350A series enhance operation?

The built-in braking unit is essential for dissipating regenerative energy. When the motor decelerates rapidly or drives a load, it can act as a generator. This energy needs to be safely managed.

This unit allows for controlled braking of the motor. It connects to an external braking resistor to convert excess electrical energy into heat. This prevents overvoltage faults and ensures safe stopping.

It is particularly beneficial for applications with high inertia loads. Examples include elevators, cranes, and high-speed machinery. The braking unit ensures quick and safe stops without compromising drive performance.

What are common applications for the INVT GD350A-045G/055P-4 VFD?

This VFD is ideal for high-speed motor drives in demanding sectors. It is frequently used in textile manufacturing for spinning and weaving. It is also applied in the plastics industry for extruders.

Another significant area of application is in woodworking machinery. This includes high-speed routers and saws. The precise speed control ensures excellent finishing and material handling.

Other relevant applications include packaging lines, metal processing, and specialized pumps. Its robust design and broad frequency range make it versatile for various industrial automation needs.

How do I select the correct braking resistor for the GD350A-045G/055P-4?

Braking resistor selection depends on the peak braking power and duty cycle. The VFD's manual provides specific recommendations based on motor size. Consult the product datasheet for guidance.

The resistor's ohmic value is also critical. It must fall within the acceptable range specified by the VFD. Too low an ohmic value can damage the drive, while too high can reduce braking effectiveness.

Ensure the resistor's power rating is sufficient for the application's braking energy. Consider the frequency and duration of braking cycles. An undersized resistor will overheat and fail.

What are the primary protection features of this VFD?

This VFD incorporates extensive protection mechanisms. It guards against overcurrent, overvoltage, and undervoltage conditions. It also protects against motor and drive overtemperature.

Further protection includes phase loss detection on both input and output. It also features ground fault protection and short-circuit protection. These features enhance operational safety and prevent equipment damage.

These built-in protections ensure the longevity of the drive and connected motor. They also contribute to a safer working environment by preventing unexpected failures. Regular monitoring of fault logs can help in proactive maintenance.

Can the INVT GD350A-045G/055P-4 be used with standard asynchronous motors?

Yes, the INVT GD350A-045G/055P-4 is designed to drive standard asynchronous (induction) motors. It supports both V/f control and sensorless vector control modes. This makes it highly versatile.

For optimal performance, especially at high speeds, sensorless vector control is recommended. This mode allows for precise speed and torque control without an encoder. It ensures efficient operation across the speed range.

The VFD features auto-tuning capabilities. This allows it to automatically detect and adapt to the motor's parameters. This simplifies setup and ensures efficient operation with various motor types.

What communication protocols are supported by the GD350A series?

The standard communication protocol for the INVT GD350A series is RS485 using the Modbus RTU protocol. This is a widely adopted standard for industrial communication. It allows for easy integration with PLCs and HMIs.

For more advanced networking requirements, optional communication modules are available. These can include protocols like PROFIBUS DP, DeviceNet, and EtherNet/IP. This provides flexibility for different automation architectures.

These communication capabilities enable remote monitoring and control. They are crucial for implementing sophisticated automation systems and IIoT solutions. This allows for centralized data collection and system management.

How is fan or pump control optimized with this VFD?

This VFD optimizes fan and pump control through its variable speed capabilities. By adjusting motor speed, it precisely matches output to demand, saving significant energy compared to fixed-speed systems. This is often referred to as "variable speed drives for pumps and fans".

Its sensorless vector control ensures smooth and efficient operation. This minimizes mechanical stress on the motor and driven equipment. It also contributes to quieter operation and reduced wear and tear.

The VFD can be programmed with specific PID control loops. This allows it to automatically maintain desired pressure or flow rates. It can also be configured for multi-pump or multi-fan operation for redundancy and optimized efficiency.

What maintenance is recommended for the INVT GD350A-045G/055P-4 VFD?

Regular visual inspection of the VFD and its connections is crucial. Check for dust accumulation, loose wiring, and signs of overheating. Ensure ventilation openings are clear and clean.

Periodically check the cooling fan's operation. For units operating in dusty environments, consider periodic cleaning of heatsinks and fans. Consult the manual for specific cleaning procedures and recommended intervals.

Firmware updates, if available and applicable, can enhance performance and introduce new features. Always back up VFD parameters before performing maintenance or firmware updates. Follow safety guidelines during all maintenance procedures.