INVT GD350A-185G/200P-4 General Engineering VFD Drive

The INVT GD350A-185G/200P-4 General Engineering VFD Drive stands as a robust and versatile solution for a wide array of industrial applications, offering exceptional control, efficiency, and reliability. Engineered with advanced technology, this Variable Frequency Drive (VFD) delivers precise motor speed regulation, significant energy savings, and enhanced operational performance. Key advantages include its high overload capacity, comprehensive protection features, and flexible communication options. Core technical parameters highlight its power capabilities, with an 185kW (200HP) rating, an input voltage range of 380-460V AC, and a rated output current of 370A. Its sophisticated control algorithms ensure smooth acceleration and deceleration, minimizing mechanical stress on connected equipment.

Product Specifications

| Feature               | Specification                               |

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

| Model Number          | GD350A-185G/200P-4                          |

| Rated Power (kW)      | 185                                         |

| Rated Power (HP)      | 200                                         |

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

| Rated Output Current  | 370A                                        |

| Output Frequency      | 0-400 Hz                                    |

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

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

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

| Communication Ports   | RS485 (Modbus RTU) standard, Optional fieldbus cards |

| Operating Temperature | -10°C to +40°C (derated above 40°C)         |

| Enclosure Rating      | IP20                                        |

Core Features & Market Positioning

The INVT GD350A-185G/200P-4 distinguishes itself in the competitive general engineering VFD market through its advanced sensorless vector control, which provides superior torque performance and speed accuracy, even under fluctuating loads. This capability is critical for applications demanding precise process control, such as conveyors, pumps, and fans. Its robust design ensures high reliability in demanding industrial environments, positioning it as a cost-effective and high-performance alternative to more complex or specialized drives. The drive's built-in sophisticated parameter settings and intuitive interface simplify configuration and operation, appealing to a broad user base seeking both power and ease of use. Furthermore, its modular design facilitates potential future upgrades and maintenance, adding to its long-term value proposition.

Key Application Scenarios

This versatile VFD finds extensive use across numerous industrial sectors. In the chemical industry, it excels in precise flow control for pumps and mixers, ensuring consistent product quality and energy efficiency. For water and wastewater treatment, the GD350A-185G/200P-4 optimizes pump performance, managing flow rates dynamically to reduce energy consumption and prevent system damage. In material handling, applications such as heavy-duty conveyors and elevators benefit from the drive's high starting torque and smooth acceleration capabilities, ensuring reliable material transport. Its ability to handle significant overloads makes it suitable for demanding machinery in manufacturing and processing plants, including extruders, crushers, and compressors, where consistent and reliable operation is paramount.

Practical System Integration Guidance

Integrating the INVT GD350A-185G/200P-4 into existing systems is straightforward due to its standard communication protocols and flexible wiring options. Ensure a stable power supply adhering to the 380-460V AC, 3-phase input range, and proper grounding for safety and signal integrity. Wiring of the main power terminals (L1, L2, L3 for input; U, V, W for output) must be secure to prevent loose connections, especially given the high currents involved. For motor connections, utilize shielded cables to minimize electromagnetic interference (EMI). The drive's RS485 Modbus RTU interface allows seamless integration with SCADA systems or PLCs for remote monitoring and control. Initial commissioning typically involves setting motor parameters (e.g., rated voltage, current, frequency, pole count) and selecting the appropriate control mode (e.g., sensorless vector for optimal torque, V/f for simpler loads) via the keypad or software.

Operation and Risk Mitigation

Safe operation of the INVT GD350A-185G/200P-4 VFD is paramount. Always ensure the drive is de-energized before performing any wiring or maintenance. Proper ventilation is critical to prevent overheating; ensure the ambient temperature does not exceed the specified operating range of +40°C without derating. For applications involving potential network disturbances, consider installing appropriate input and output filters. Common troubleshooting involves checking for error codes displayed on the drive's interface. For instance, an "OC" (Over-current) fault might indicate a motor issue, excessive acceleration, or a drive overload. An "OV" (Over-voltage) fault suggests issues with the input power supply or regenerative braking. Consulting the detailed user manual for specific fault code explanations and corrective actions is essential for efficient problem resolution.

Scalability & Long-Term Value

The INVT GD350A-185G/200P-4 is designed for long-term value and scalability within industrial automation frameworks. Its compatibility with standard Modbus RTU communication allows for easy integration into existing digital control systems and facilitates future expansion. INVT also offers optional communication cards for integration with other industrial fieldbuses like Profibus or DeviceNet, providing flexibility for evolving network requirements. This adaptability ensures that the drive can remain a core component as production facilities upgrade or expand. Furthermore, the drive's robust build quality and INVT's commitment to developing energy-efficient technologies contribute to reduced operational costs and a lower total cost of ownership over its lifecycle, aligning with the increasing demand for IIoT and smart factory solutions.

Frequently Asked Questions

Q1: What is the primary advantage of using the INVT GD350A-185G/200P-4 for pump applications?

The GD350A-185G/200P-4 drive offers precise speed control, enabling significant energy savings by matching pump output to demand. Its sensorless vector control ensures excellent torque performance across a wide speed range. This VFD also provides advanced protection features for pumps, reducing wear and tear.

Q2: Can this VFD be used with any type of motor?

This VFD is designed for 3-phase induction motors, which are standard in industrial settings. For optimal performance, motor parameters like rated voltage, current, and frequency must be correctly programmed into the drive. Always consult the motor nameplate and drive manual for compatibility.

Q3: How does the overload capacity of the GD350A-185G/200P-4 benefit industrial processes?

The drive's ability to handle 150% overload for 60 seconds and 180% for 10 seconds allows it to manage temporary peak loads common in machinery startup or demanding operational phases. This prevents nuisance tripping and ensures continuous operation of critical equipment.

Q4: What are the essential steps for initial installation and wiring of this VFD?

First, ensure the main power supply is disconnected. Correctly connect the 3-phase input power to terminals L1, L2, L3, and the 3-phase motor output to U, V, W. Ensure proper grounding. Use shielded motor cables to minimize electrical noise.

Q5: How can I monitor and control the INVT GD350A-185G/200P-4 remotely?

The drive comes standard with an RS485 communication port supporting Modbus RTU protocol. This allows seamless integration with PLCs, HMIs, or SCADA systems for remote monitoring of parameters and control of the VFD. Optional fieldbus cards can also be fitted for other network protocols.

Q6: What troubleshooting steps should I take if I encounter an "OC" fault code?

An "OC" fault typically indicates over-current. Check if the motor is overloaded, if the acceleration time is too short, or if there are issues with the motor or cabling. Review the drive's parameter settings and the motor's load conditions.

Q7: Is this VFD suitable for use in harsh environmental conditions like dusty or humid factories?

The GD350A-185G/200P-4 has an IP20 enclosure rating, which means it offers protection against solid objects larger than 12.5mm but is not protected against water ingress. It is best suited for clean, dry industrial environments. For harsher conditions, consider an enclosure or a higher IP-rated drive.

Q8: What is the typical power factor correction capability of this drive?

VFDs inherently improve the power factor of the motor load, especially at reduced speeds. The GD350A-185G/200P-4 contributes to improved power factor by drawing current more efficiently from the supply, reducing reactive power demand.

Q9: Does INVT offer software for configuring and commissioning the GD350A-185G/200P-4?

Yes, INVT typically provides dedicated software tools for PC-based configuration, parameter setting, monitoring, and diagnostics of their VFDs. This software simplifies the commissioning process and aids in troubleshooting.

Q10: What are the energy-saving benefits of using this VFD compared to traditional motor starters?

VFDs like the GD350A-185G/200P-4 can achieve significant energy savings, often between 20-60%, by precisely controlling motor speed based on actual load requirements. Traditional starters run motors at full speed, wasting energy when full output isn't needed.