INVT GD350A-250G/280P-4 High Precision Torque Control VFD Drive

The INVT GD350A-250G/280P-4 High Precision Torque Control VFD Drive stands as a pinnacle of advanced motor control technology, engineered for applications demanding exceptional accuracy and dynamic response. This variable frequency drive (VFD) distinguishes itself with a robust power output, supporting a 250kW (335HP) general load (GD350A-250G) or a 280kW (375HP) pump/fan load (GD350A-280P) with a 400V nominal voltage. Its core strengths lie in its high-precision torque control capabilities, advanced vector control algorithms, and a comprehensive feature set designed for seamless integration and reliable operation across demanding industrial environments. Key technical parameters include an output frequency range of 0-400Hz, precise speed regulation of ±0.02% with encoder feedback, and torque control accuracy within ±5% of rated torque.

Product Specifications

| Parameter                | Specification (GD350A-250G/280P-4) |

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

| Rated Power (General)    | 250 kW (335 HP)                    |

| Rated Power (Pump/Fan)   | 280 kW (375 HP)                    |

| Nominal Voltage          | 400V Class                         |

| Output Frequency Range   | 0-400 Hz                           |

| Speed Regulation (Encoder) | ±0.02%                             |

| Torque Control Accuracy  | ±5% of rated torque                |

| Control Method           | Sensorless Vector Control, Closed-loop Vector Control |

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

| Protection Features      | Comprehensive motor and drive protection |

Core Features & Market Positioning

The INVT GD350A-250G/280P-4 positions itself as a premium solution for applications where precise torque and speed management are paramount. Its advanced closed-loop vector control offers superior dynamic performance, enabling rapid acceleration/deceleration and accurate holding torque, outperforming many standard VFDs in its class. The drive's robust overload capacity ensures stability during transient load conditions, a critical factor in heavy industries. Furthermore, INVT's commitment to technological innovation is evident in its sophisticated algorithms that minimize motor noise and vibration, extending equipment lifespan and improving overall system efficiency. This focus on high-performance control and reliability makes it a compelling choice for industries seeking to optimize production processes and reduce operational costs.

Key Application Scenarios

This high-precision VFD drive is ideally suited for a wide array of demanding industrial applications. Its superior torque control is essential for machinery such as winding machines, extruders, printing presses, and metal processing equipment where consistent tension and precise material handling are crucial. In the plastics and rubber industry, it excels in controlling extruders and injection molding machines, ensuring uniform product quality. For material handling systems, including cranes and hoists, the GD350A series provides smooth, accurate positioning and load management. Textile manufacturing also benefits significantly, particularly in winding and unwinding applications requiring precise tension control to prevent material damage or slippage.

Practical System Integration Guidance

Integrating the INVT GD350A-250G/280P-4 into existing systems is streamlined through its flexible configuration options and robust communication protocols. The drive supports multiple digital and analog I/O points for flexible control and monitoring, and optional communication modules for seamless integration with popular industrial networks like Modbus, Profibus, and Ethernet/IP. Wiring practices should adhere to industrial standards, ensuring proper grounding and shielding to prevent electromagnetic interference, especially in high-power applications. For closed-loop vector control, correct encoder signal wiring and parameter configuration within the VFD are critical for achieving optimal performance. Initial commissioning involves setting motor parameters, defining speed and torque limits, and configuring protective functions to match the specific application requirements.

Operation and Risk Mitigation

Safe and efficient operation of the INVT GD350A-250G/280P-4 necessitates adherence to operating guidelines and proactive risk mitigation. Users must ensure the drive is installed in a well-ventilated environment, protected from dust, moisture, and excessive temperature, to prevent overheating and component failure. Prior to initial startup, a thorough review of the installation manual and safety precautions is mandatory. Common troubleshooting involves checking power supply stability, ensuring correct motor wiring, and verifying parameter settings. Critical fault codes, such as "Overcurrent," "Overvoltage," or "Motor Overload," typically indicate issues with motor load, power supply, or drive configuration, requiring prompt investigation according to the drive's diagnostic indicators. Implementing proper lockout/tagout procedures during maintenance is paramount for personnel safety.

Scalability & Long-Term Value

The INVT GD350A-250G/280P-4 offers significant scalability and long-term value, particularly for businesses looking to enhance their automation capabilities and embrace Industry 4.0 principles. Its modular design and support for advanced communication protocols allow for easy integration into supervisory control and data acquisition (SCADA) systems and Manufacturing Execution Systems (MES). This facilitates real-time data monitoring, remote diagnostics, and predictive maintenance, crucial for optimizing operational efficiency and minimizing downtime. The availability of software updates and INVT's ongoing commitment to product development ensure that the drive remains a capable and relevant component within evolving industrial automation landscapes, providing a strong return on investment through enhanced productivity and reduced maintenance costs.

Frequently Asked Questions

Q1: What are the primary benefits of using the INVT GD350A-250G/280P-4 VFD?

The GD350A series offers superior motor control precision. It provides accurate speed and torque regulation for demanding applications. This leads to improved product quality and process efficiency.

This drive excels in dynamic response and stability. It handles rapid load changes effectively. This minimizes downtime and reduces mechanical stress.

Its robust design and comprehensive protection features ensure longevity. It is built for harsh industrial environments. This offers reliable long-term performance.

Q2: How does the closed-loop vector control of this VFD enhance performance?

Closed-loop vector control utilizes encoder feedback. This allows for precise monitoring of motor speed and position. It enables highly accurate torque control, even at low speeds.

This advanced control method ensures immediate response to load variations. It maintains set speed and torque consistently. This is critical for applications like winding and tension control.

By optimizing motor performance, it reduces energy consumption. It also minimizes motor noise and vibration. This extends the lifespan of both the drive and the motor.

Q3: What types of industries commonly benefit from the INVT GD350A-250G/280P-4 VFD?

The printing and packaging industry benefits greatly. Precise control is needed for web handling and tension management. This ensures high-quality print registration.

Machinery manufacturing, especially for machine tools, uses it extensively. Accurate positioning and speed are vital for machining operations. It aids in achieving tight tolerances.

In the textile industry, it's used for winding and unwinding machines. Consistent tension control prevents material defects. This enhances fabric quality and production yield.

Q4: Can this VFD be integrated with existing PLC systems?

Yes, integration with PLC systems is straightforward. The VFD supports multiple communication protocols. Common industrial fieldbuses like Modbus are often available.

This allows for seamless data exchange between the VFD and the PLC. You can monitor drive status and control its operation remotely. This enhances automation capabilities.

By utilizing optional communication modules, you can connect to Profibus, DeviceNet, or EtherNet/IP. This offers flexibility for diverse control architectures.

Q5: What are the typical installation requirements for the GD350A-250G/280P-4?

Proper ventilation is crucial for heat dissipation. Mount the drive in a clean, dry environment. Avoid areas with excessive dust or corrosive fumes.

Ensure adequate clearance around the VFD. This allows for airflow and easy access for maintenance. Follow the manufacturer's spacing recommendations.

Electrical installation must follow local codes. Use appropriately sized cables and ensure proper grounding. Shielded cables are recommended for encoder feedback.

Q6: How do I perform initial parameter setup for a new motor?

The VFD needs motor-specific parameters programmed. This includes rated voltage, current, frequency, and speed. Consult your motor's nameplate for these details.

It is recommended to perform auto-tuning. This process calibrates the VFD to the motor's characteristics. It optimizes torque and speed control performance.

Verify essential safety parameters first. Set overload limits and speed limits appropriate for the application. This prevents damage to the motor and driven equipment.

Q7: What are common troubleshooting steps for drive faults?

First, check the fault code displayed on the drive. Consult the user manual for the meaning of the code. This guides troubleshooting efforts.

Verify the power supply voltage and phase sequence. Ensure all motor connections are secure and correct. Loose connections can cause various faults.

Check for motor issues like short circuits or open windings. Inspect for mechanical binding in the driven equipment. Overloads can trigger protection circuits.

Q8: How does the GD350A series handle overload conditions?

The drive is designed with robust overload capabilities. It can typically handle 150% overload for 60 seconds. Higher overloads (e.g., 180%) are often supported for shorter durations (10 seconds).

This allows for smooth acceleration of high-inertia loads. It prevents nuisance tripping during temporary surges. It ensures reliable operation under dynamic conditions.

Exceeding these limits repeatedly can lead to drive or motor damage. Always ensure the motor and driven load are correctly sized for the application.

Q9: What safety features are included in this VFD?

The drive incorporates comprehensive motor protection features. This includes overcurrent, overvoltage, and undervoltage protection. It also offers motor overload and overheat protection.

It also provides safety functions like safe torque off (STO). This is a critical safety feature for emergency stops. It rapidly disables motor torque.

Users must always follow safety guidelines. Ensure proper installation and maintenance. Always use lockout/tagout procedures during service.

Q10: Is this VFD suitable for IIoT integration and smart factory concepts?

Yes, the GD350A series is IIoT ready. It supports various industrial communication protocols. This enables seamless integration into smart factory architectures.

Data from the drive, like performance metrics and status, can be collected. This information is valuable for real-time monitoring and analytics. It supports predictive maintenance strategies.

By connecting to cloud platforms or SCADA systems, you can achieve advanced control and optimization. This aligns with Industry 4.0 initiatives for enhanced efficiency.