INVT GD350A-2R2G/003P-4 General Purpose Inverter VFD

The INVT GD350A-2R2G/003P-4 General Purpose Inverter VFD is a robust and versatile Variable Frequency Drive engineered for demanding industrial applications. It offers precise motor control, enhanced energy efficiency, and superior reliability, making it an ideal choice for a wide range of machinery. Key advantages include its advanced vector control algorithms, comprehensive protection features, and user-friendly interface. This 2.2kW, 3-phase inverter boasts a compact design and supports flexible installation options.

Product Specifications

| Feature              | Specification                                  |

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

| Model Number         | GD350A-2R2G/003P-4                             |

| Power Rating         | 2.2 kW                                         |

| Input Power          | 3-Phase, 380V-440V (±10%)                      |

| Output Voltage       | 3-Phase, 0-440V                                |

| Output Frequency     | 0-400 Hz                                       |

| Rated Current        | 5.0 A                                          |

| Control Method       | V/f Control, Vector Control (SVC)              |

| Protection Features  | Overcurrent, Overvoltage, Undervoltage, Overload, Overtemperature, Short circuit, etc. |

| Communication Ports  | RS485 (standard)                               |

| Mounting Type        | Wall/Din Rail                                  |

| Dimensions (W x H x D)| 130mm x 220mm x 160mm                          |

Core Features & Market Positioning

The INVT GD350A-2R2G/003P-4 distinguishes itself through its advanced sensorless vector control (SVC) capability, enabling precise speed and torque regulation even without encoder feedback. This technology significantly enhances performance in applications requiring dynamic response and accurate positioning. Its robust design, incorporating high-quality components, ensures exceptional durability and longevity in harsh industrial environments, positioning it as a reliable solution for critical operations. The inverter's integrated braking unit further enhances its versatility, allowing for quick and safe deceleration of motor loads.

Key Application Scenarios

This general-purpose inverter is exceptionally well-suited for a myriad of industrial tasks. Common applications include controlling pumps and fans in HVAC systems, managing conveyor belts in material handling, driving machine tools like lathes and milling machines, and powering extruders and mixers in the plastics and chemical industries. Its adaptability makes it a go-to choice for optimizing energy consumption and process efficiency across various manufacturing sectors. The GD350A series is designed to handle variable torque loads effectively, further broadening its applicability.

Practical System Integration Guidance

Integrating the INVT GD350A-2R2G/003P-4 into existing systems is straightforward due to its flexible configuration options. For power wiring, ensure that the input power supply is correctly connected to terminals L1, L2, L3, and the motor to T1, T2, T3, observing proper phase sequence. The digital inputs can be configured for start/stop commands, speed selection, or fault reset, while the analog inputs allow for external speed reference via potentiometers or PLC signals. Programming parameters, accessible via the keypad or serial communication (RS485), can be tailored to specific motor characteristics and application requirements for optimal performance.

Operation and Risk Mitigation

Safe operation of the INVT GD350A-2R2G/003P-4 mandates adherence to electrical safety standards during installation and maintenance. Always disconnect power before performing any wiring or inspection. Critical fault codes, such as E.OC (Overcurrent), E.OV (Overvoltage), and E.OL (Overload), should be promptly addressed by referring to the product manual for specific troubleshooting steps. Proper ventilation and avoiding installation in excessively dusty or humid environments will prevent overheating and premature component failure, ensuring operational continuity and mitigating risks.

Scalability & Long-Term Value

The INVT GD350A-2R2G/003P-4 offers excellent scalability for evolving industrial needs. Its RS485 communication port facilitates integration into SCADA systems and local/remote control networks, enabling seamless data acquisition and IIoT connectivity. Compatibility with various motor types and the ability to precisely control motor speed and torque contribute to long-term operational efficiency and reduced maintenance costs. The INVT product ecosystem provides a pathway for system expansion and upgrade, ensuring continued relevance in advanced manufacturing environments.

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Frequently Asked Questions (FAQs)

Q1: What are the primary advantages of using the INVT GD350A-2R2G/003P-4 inverter?

This inverter offers precise motor speed and torque control for enhanced process accuracy. It significantly improves energy efficiency by matching motor output to load demands, reducing operational costs. The unit features robust protection mechanisms to safeguard both the motor and the drive against electrical faults.

The GD350A-2R2G/003P-4 utilizes advanced sensorless vector control for superior performance. Its compact design simplifies installation in space-constrained industrial settings. The intuitive user interface allows for quick parameter setup and monitoring.

Reliability in demanding industrial environments is a key advantage. Its comprehensive fault diagnostics aid in rapid troubleshooting and minimizing downtime. The inverter's versatility supports a broad spectrum of motor types and applications.

Q2: How do I wire the INVT GD350A-2R2G/003P-4 for a 3-phase motor?

Connect the incoming 3-phase power supply (e.g., 380-440V) to terminals L1, L2, and L3 on the inverter's input side. Ensure proper grounding of the unit and power source. The motor power leads are connected to output terminals T1, T2, and T3.

Verify the motor's nameplate data matches the inverter's capabilities regarding voltage, frequency, and power. Double-check the phase sequence before applying power to avoid motor damage. Refer to the wiring diagram in the user manual for precise terminal identification.

For control circuits, connect digital inputs for start/stop commands or external speed references to the designated input terminals. Utilize the analog inputs for potentiometers or PLC control signals. Ensure all control wiring is kept separate from power wiring to prevent interference.

Q3: What are the typical applications for the INVT GD350A-2R2G/003P-4?

This inverter is widely used for variable speed control of pumps and fans in HVAC systems and water treatment plants. It excels in material handling applications, such as conveyor belts and elevators, providing smooth acceleration and deceleration. Machine tool applications, including lathes, milling machines, and grinders, benefit from its precise torque control.

Other common uses include powering extruders, mixers, and processing equipment in the plastics, rubber, and chemical industries. Its general-purpose nature also makes it suitable for textile machinery, printing equipment, and packaging lines where variable speed is required. The ability to adapt to different load types ensures its broad applicability across manufacturing.

The GD350A-2R2G/003P-4 is an excellent choice for applications demanding energy savings and improved process stability. Its robust design supports continuous operation in challenging industrial conditions.

Q4: Can this inverter be controlled remotely or integrated into an automation system?

Yes, the INVT GD350A-2R2G/003P-4 is equipped with an RS485 communication port as a standard feature. This allows for seamless integration into supervisory control and data acquisition (SCADA) systems or other industrial networks. Remote monitoring and control of operational parameters, such as speed, status, and fault diagnostics, are readily achievable.

Through Modbus RTU protocol over RS485, the inverter can exchange data with PLCs, HMIs, and other intelligent devices. This enables centralized control and advanced automation strategies. Configuration of communication parameters is straightforward via the inverter's menu.

Advanced users can leverage this communication capability for IIoT applications, collecting operational data for analysis, predictive maintenance, and process optimization. This connectivity enhances the long-term value and adaptability of the GD350A-2R2G/003P-4 in modern smart factories.

Q5: What are the key protection features of this VFD?

The GD350A-2R2G/003P-4 incorporates comprehensive overcurrent protection to prevent damage to the drive and motor during sudden load increases or short circuits. It also features overvoltage and undervoltage protection to maintain stable operation within specified voltage limits. Integrated overload protection safeguards the motor from sustained excessive current draw.

Additional safety features include overtemperature protection, which monitors the internal temperature of the inverter and reduces output or shuts down if it exceeds safe limits. It also provides protection against motor phase loss and output phase loss, crucial for preventing damage.

The drive offers motor short-circuit protection and ground fault detection, ensuring a high level of safety for personnel and equipment. These multiple layers of protection contribute significantly to the reliability and longevity of the system.

Q6: How do I set the motor parameters for optimal performance?

Accurate motor parameter setting is crucial for enabling the inverter's advanced control modes, like Sensorless Vector Control (SVC). Access the parameter group dedicated to motor data, typically labeled "Motor Parameters" or similar. Input the motor's rated voltage, rated frequency, rated speed, rated power, rated current, power factor, and stator resistance.

For SVC mode, it's highly recommended to perform an auto-tuning function. This process automatically measures and calibrates the motor's electrical characteristics, optimizing the control loop. Ensure the motor is disconnected from any mechanical load during auto-tuning for accurate results.

After auto-tuning or manual parameter entry, verify the motor's behavior at different speeds. Adjust acceleration/deceleration times, current limits, and other relevant parameters as needed to match the application's specific requirements and ensure smooth, efficient operation.

Q7: What is the typical operating temperature range for the INVT GD350A-2R2G/003P-4?

The INVT GD350A-2R2G/003P-4 is designed to operate reliably within an ambient temperature range of -10°C to +40°C (14°F to 104°F). This range ensures stable performance under typical industrial conditions. However, exceeding this range can lead to reduced performance or potential damage.

For environments where temperatures may approach the upper limit (+40°C), it is crucial to ensure adequate ventilation and cooling. This might involve increasing airflow around the inverter or considering derating its output capacity. Avoid direct sunlight exposure and ensure the installation location is free from heat sources.

If operating in ambient temperatures below -10°C, specific precautions might be necessary, such as ensuring the inverter has warmed up sufficiently before initial startup to prevent condensation or damage to electronic components. Always consult the product manual for detailed environmental operating guidelines.

Q8: Does this inverter support braking? How is it configured?

Yes, the INVT GD350A-2R2G/003P-4 typically includes an integrated braking unit, which allows for dynamic braking to dissipate excess energy during deceleration. This is essential for applications requiring rapid stops or for handling loads with high inertia. The braking function helps to prevent overvoltage faults during deceleration.

To configure braking, you need to connect an external braking resistor to the designated braking terminals (e.g., PB+, PB-). The value and power rating of the braking resistor must be selected based on the motor's power and the expected braking duty cycle. Incorrect resistor selection can lead to overheating or ineffective braking.

Parameter settings within the VFD control the braking operation. Key parameters include setting the braking voltage (at which the braking resistor is activated), the maximum braking current, and the braking mode. Ensure these parameters are correctly configured to achieve the desired braking performance and safety.

Q9: What are common error codes and how can I troubleshoot them?

Common error codes for the GD350A-2R2G/003P-4 include E.OC (Overcurrent), E.OV (Overvoltage), E.UV (Undervoltage), E.OL (Overload), and E.OT (Overtemperature). For E.OC, check for motor short circuits, sudden load increases, or incorrect acceleration time settings. For E.OV and E.UV, verify the input power supply voltage is within the acceptable range.

E.OL indicates the motor is drawing current exceeding its rated capacity for an extended period. This could be due to an overloaded driven machine, incorrect motor parameters, or inadequate cooling. E.OT signifies the internal temperature of the inverter is too high, requiring improved ventilation or reduced load.

Troubleshooting involves consulting the inverter's manual for specific code explanations and recommended actions. Often, resolving these errors requires adjusting parameters, inspecting wiring, ensuring proper motor matching, or improving the operating environment. Always power down the unit before performing physical inspections or adjustments.

Q10: What is the warranty period and after-sales support like for INVT products?

INVT typically offers a standard warranty period for its products, which often extends for 18 months from the date of manufacture or 12 months from the date of sale, whichever comes first. Specific warranty terms may vary by region and distributor. It is advisable to confirm the exact warranty details with the point of purchase or an authorized INVT representative.

After-sales support from INVT includes technical assistance, troubleshooting guidance, and access to product documentation, such as manuals and application notes. Many users can find solutions through online resources, including INVT's official website, which often hosts FAQs, firmware updates, and technical forums.

For complex issues or repairs, INVT-authorized service centers are available to provide professional support. Establishing a relationship with a local distributor or partner can also ensure timely access to spare parts and expert technical advice, contributing to the long-term operational value of the GD350A-2R2G/003P-4.