INVT GD350A-110G/132P-4 High Performance General VFD Drive

The INVT GD350A-110G/132P-4 High Performance General VFD Drive stands as a robust solution for variable speed control across diverse industrial applications. This drive distinguishes itself with its exceptional performance, advanced control algorithms, and comprehensive protection features, ensuring optimal efficiency and reliability. Key advantages include its high torque output at low speeds, precise speed regulation, and energy-saving capabilities. The core technical specifications reveal a rated power of 110 kW for normal duty and 132 kW for heavy duty, a 3-phase input voltage range of 380-440V, and an output frequency of up to 1000 Hz, designed to meet demanding operational requirements.

Product Specifications

| Parameter                  | Specification                                |

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

| Model                      | GD350A-110G/132P-4                           |

| Rated Power (Normal Duty)  | 110 kW (150 HP)                              |

| Rated Power (Heavy Duty)   | 132 kW (175 HP)                              |

| Input Voltage              | 3-Phase, 380V ~ 440V                         |

| Output Frequency Range     | 0.00~1000.00 Hz                              |

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

| Overload Capacity          | 120% for 60s (Normal Duty), 150% for 60s (Heavy Duty) |

| Starting Torque            | ≥ 180% (Sensorless Vector Control, 0.5 Hz)   |

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

| Protection Features        | Over-voltage, Under-voltage, Over-current, Overload, Overtemperature, etc. |

| Dimensions (W x H x D)     | Refer to manufacturer's datasheet            |

| Weight                     | Refer to manufacturer's datasheet            |

Core Features & Market Positioning

The INVT GD350A series, specifically the GD350A-110G/132P-4, is engineered for superior performance and flexibility, positioning it as a leading choice for applications demanding precise motor control and high efficiency. Its advanced sensorless vector control algorithm provides excellent dynamic response and accurate speed holding, even under fluctuating loads, without the need for motor encoders. This differentiates it from basic V/f drives and offers a cost-effective alternative to closed-loop vector control for many applications. The drive's robust design and comprehensive protection mechanisms ensure operational longevity and reduce downtime, making it a reliable component in critical industrial processes. Its ability to handle up to 1000 Hz output frequency further broadens its applicability into high-speed motor applications.

Key Application Scenarios

The versatility of the INVT GD350A-110G/132P-4 VFD Drive makes it suitable for a wide array of industrial sectors. It excels in pump and fan applications, where precise flow and pressure control are paramount, leading to significant energy savings by matching motor speed to system demand. In the material handling industry, it is ideal for conveyor systems, cranes, and elevators, providing smooth acceleration, deceleration, and accurate positioning. The machine tool industry benefits from its high starting torque and precise speed regulation for applications such as CNC machines and spindles. Furthermore, its robust construction and wide operating temperature range make it a viable option for demanding environments in sectors like plastics processing, textiles, and general manufacturing equipment.

Practical System Integration Guidance

Integrating the INVT GD350A-110G/132P-4 into existing or new systems requires careful attention to wiring and parameter configuration. Ensure the power supply is a stable 3-phase, 380-440V source, and all grounding connections are secure to prevent electrical noise and ensure safety. For motor connections, utilize shielded cables to minimize electromagnetic interference, especially in environments with high electrical noise. The drive supports RS485 communication for integration into SCADA or PLC systems; standard Modbus RTU protocol is often used for parameter setting and monitoring. Basic commissioning involves setting motor nameplate data, selecting the appropriate control mode (sensorless vector or V/f), and configuring acceleration/deceleration times. For advanced applications, fine-tuning parameters like acceleration/deceleration boost, electronic thermal overload settings, and slip compensation is crucial for optimal performance and motor protection.

Operation and Risk Mitigation

Safe and efficient operation of the INVT GD350A-110G/132P-4 VFD Drive necessitates adherence to operational guidelines and understanding potential fault conditions. Always ensure the drive is properly installed, ventilated, and connected to a stable power source within its specified voltage range. Avoid sudden power cycling and ensure proper load matching to prevent overload conditions. Common troubleshooting involves checking for error codes displayed on the drive's interface. For instance, an "Overcurrent" fault (e.g., AFE or OC) might indicate a rapid acceleration setting, a short circuit, or motor issues, requiring a review of acceleration ramps and motor insulation. An "Overvoltage" fault (OVP) often signals a regenerative condition during deceleration; this can be mitigated by adjusting deceleration times or incorporating a braking resistor if frequent heavy braking is required. Regular inspection of motor and drive connections can prevent many operational issues and ensure the longevity of the system.

Scalability & Long-Term Value

The INVT GD350A-110G/132P-4 offers significant scalability and long-term value, supporting the evolution of industrial automation. Its modular design allows for the addition of optional communication cards, such as Profibus, DeviceNet, or Ethernet/IP, enabling seamless integration into various industrial networks and supporting the growth of Industrial Internet of Things (IIoT) initiatives. This compatibility ensures that the drive can be part of a smart factory ecosystem, facilitating data acquisition for predictive maintenance and process optimization. The drive's robust firmware is often updateable, allowing users to benefit from performance enhancements and new features released by INVT over time, thereby extending its useful life and protecting the initial investment. Its ability to drive motors up to 132kW also provides headroom for future application upgrades or increased production demands.

Frequently Asked Questions

What are the primary advantages of the INVT GD350A-110G/132P-4 VFD?

This drive offers superior motor control accuracy and efficiency. It features robust protection mechanisms for enhanced operational safety. Its high starting torque capability is beneficial for demanding applications.

The GD350A-110G/132P-4 excels in energy savings by precisely matching motor speed to load requirements. It provides precise speed regulation essential for consistent process output. The unit's advanced sensorless vector control ensures optimal performance without encoders.

Its key advantages include a wide output frequency range up to 1000 Hz, suitable for high-speed applications. The drive boasts a compact design for easier installation in space-constrained environments. It also offers flexible communication options for system integration.

How do I select the correct V/f curve for my application with the GD350A-110G/132P-4?

Choosing the right V/f curve depends on the motor characteristics and application needs. Standard V/f curves offer basic speed control for simple loads like fans and pumps. You can select these based on the motor's rated voltage and frequency.

For applications requiring more precise torque control or variable torque loads, a custom V/f curve can be programmed. This involves inputting specific voltage and frequency points to match the motor's performance curve. This is vital for applications where torque is critical.

Refer to your motor's datasheet and the GD350A-110G/132P-4 user manual for detailed guidance. Incorrect V/f settings can lead to poor performance, overheating, or motor damage. Always prioritize motor protection when configuring these parameters.

What are the common fault codes for the INVT GD350A-110G/132P-4 and how can I resolve them?

Overcurrent (OC) faults are common and often indicate rapid acceleration or motor issues. Check acceleration time settings and motor insulation resistance. Ensure the drive's current limit is set appropriately for the motor size.

Overvoltage (OVP) faults usually occur during deceleration. This suggests the motor is acting as a generator and feeding power back. Adjust deceleration ramps or consider a braking resistor if this is frequent.

Ground Fault (GF) or Earth Leakage faults point to insulation breakdown. Inspect motor windings, output cables, and grounding connections thoroughly. Ensure all connections are secure and free from damage.

Can the INVT GD350A-110G/132P-4 be used with single-phase motors?

No, the INVT GD350A-110G/132P-4 is specifically designed for three-phase AC induction motors. It requires a three-phase power supply for operation. Using it with a single-phase motor is not supported and can cause damage.

For applications that only have a single-phase power supply available, you would need to consider a different type of VFD or a phase converter. There are specific VFD models designed for single-phase input to three-phase output. Consult INVT's product catalog for suitable alternatives.

Always verify the motor type and power supply compatibility before connecting any drive. Incorrect configuration can lead to equipment failure and safety hazards.

What is the maximum output frequency of the GD350A-110G/132P-4 drive?

The INVT GD350A-110G/132P-4 drive supports a maximum output frequency of 1000 Hz. This high frequency capability is crucial for applications requiring very high motor speeds. Examples include certain types of centrifuges or high-speed spindles.

Operating at such high frequencies requires careful consideration of motor design and cooling. Standard industrial motors may not be designed for continuous operation at these speeds. Ensure your motor is rated for the intended operating frequency and speed.

Always consult the motor manufacturer's specifications and the VFD's user manual when setting high output frequencies. Proper motor cooling and bearing lubrication are essential to prevent premature wear and failure.

How does the sensorless vector control of the GD350A-110G/132P-4 differ from V/f control?

Sensorless vector control offers superior performance by estimating motor flux and torque without requiring an encoder. It provides accurate speed regulation and high starting torque, even under varying load conditions. This mode is ideal for applications needing dynamic response and precise control.

V/f control, on the other hand, maintains a constant ratio between voltage and frequency. It's simpler and suitable for applications with stable loads and less stringent speed control requirements, such as basic fans or pumps. It's less precise with dynamic load changes.

The GD350A-110G/132P-4's ability to switch between these modes provides flexibility. Sensorless vector control offers advanced performance comparable to closed-loop systems, while V/f control is easier to set up for less demanding tasks.

What communication protocols does the GD350A-110G/132P-4 support for remote control?

The drive natively supports the Modbus RTU protocol via its built-in RS485 communication interface. This allows for easy integration with PLCs, HMIs, and SCADA systems for monitoring and control. You can read status, write commands, and adjust parameters remotely.

For broader industrial network compatibility, INVT offers optional communication modules. These can include protocols like Profibus DP, DeviceNet, EtherNet/IP, and Modbus TCP. These modules allow seamless integration into existing automation architectures.

When selecting a communication module, ensure it matches your plant's existing network infrastructure. Proper configuration of both the drive and the network master is essential for reliable remote operation.

What is the overload capacity of the INVT GD350A-110G/132P-4 drive?

The INVT GD350A-110G/132P-4 drive provides different overload capacities for its normal duty and heavy-duty modes. For normal duty applications, it can handle 120% of its rated current for 60 seconds. This is suitable for loads with moderate peak demands.

In heavy-duty mode, the drive offers an overload capacity of 150% of its rated current for 60 seconds. This setting is designed for applications with frequent high torque demands or significant starting inrush currents, such as crushers or extruders.

It's critical to select the appropriate duty mode based on your application's load profile. Operating continuously above the rated current, even within the overload specification, can reduce the drive's lifespan. Always consult the manual for detailed duty cycle information.

What kind of motor is compatible with the GD350A-110G/132P-4?

The INVT GD350A-110G/132P-4 is designed to control standard three-phase AC induction motors. This includes both squirrel cage and wound rotor types, provided they are suitable for variable frequency drive operation. It's essential the motor's voltage and frequency ratings match the drive's capabilities.

For optimal performance, especially with sensorless vector control, it's recommended to use motors with well-defined parameters. Motors with known stator resistance, inductance, and magnetic flux characteristics will yield better results. Check the motor nameplate for crucial information.

Ensure the motor's insulation is suitable for VFD output, especially for applications with long cable runs, as VFDs can generate voltage spikes. Using shielded motor cables is also highly recommended to mitigate these effects.

What are the key considerations for installing and wiring the GD350A-110G/132P-4?

Proper installation involves mounting the drive in a clean, dry environment with adequate ventilation. Ensure sufficient clearance around the drive for heat dissipation and access. Mount it vertically on a flat surface, avoiding direct sunlight or areas with excessive dust or corrosive fumes.

Wiring must be done meticulously according to the drive's manual and local electrical codes. Use appropriately sized conductors for power input, output to the motor, and any control signals. Ensure all grounding connections are robust and connected to the system's main ground.

For motor connections, use shielded, twisted-pair cables to minimize electromagnetic interference (EMI). Route power cables separately from control and communication cables to prevent noise coupling. Employ ferrite beads or chokes if necessary to further reduce EMI.