INVT GD350A-055G/075P-4 High Performance General VFD Drive
The INVT GD350A-055G/075P-4 High Performance General VFD Drive stands as a robust solution for demanding industrial automation tasks, offering superior motor control and energy efficiency. This drive delivers exceptional performance with features such as advanced vector control, a wide voltage input range, and integrated communication protocols, making it a versatile choice for various applications. Its core technical specifications include a 55kW (0.55HP) power rating for the 055G model and a 75HP (0.75P) rating for the 075P model, operating typically on a 3-phase, 380-460V power supply. The GD350A series is engineered for reliability, boasting a compact design and a high overload capacity of 150% for 60 seconds, ensuring sustained operation under challenging conditions.
Product Specifications
| Parameter | Specification |
| :------------------------- | :--------------------------------------------------- |
| Model | GD350A-055G/075P-4 |
| Power Rating (055G) | 55 kW / 75 HP |
| Power Rating (075P) | 75 HP / 110 kW (Note: 075P denotes 75HP, 110kW is a common equivalent) |
| Input Voltage Range | 3-Phase, 380V ~ 460V (-15% to +10%) |
| Output Frequency | 0-3000 Hz |
| Control Method | Sensorless Vector Control, V/f Control |
| Overload Capacity | 150% of rated current for 60s, 180% for 10s |
| Protection Grade | IP20 |
| Ambient Temperature | -10°C to +40°C (derating above 40°C) |
| Communication Interfaces | RS485 (Modbus RTU), Optional fieldbuses |
Core Features & Market Positioning
The INVT GD350A-055G/075P-4 distinguishes itself through its highly responsive sensorless vector control, providing precise speed and torque regulation even without motor feedback. This advanced control algorithm ensures optimal motor performance across a wide speed range and under fluctuating loads, positioning it as a premium general-purpose drive capable of handling complex automation requirements. Its robust build quality and high overload capability also speak to its reliability in harsh industrial environments, a key differentiator in the competitive VFD market. The integrated braking unit in many configurations further enhances its application flexibility.
Key Application Scenarios
This high-performance VFD drive finds extensive application in sectors requiring precise motor control and energy savings. It is exceptionally well-suited for variable torque loads such as pumps, fans, and compressors, where its advanced control can significantly reduce energy consumption. In manufacturing, it excels in conveyor systems, extruders, and mixers, providing consistent speed and torque for material handling and processing. Furthermore, its capabilities are valuable in machine tool applications, packaging machinery, and textile equipment, where dynamic response and accurate positioning are critical.
Practical System Integration Guidance
Integrating the INVT GD350A-055G/075P-4 into existing systems is streamlined by its user-friendly interface and comprehensive documentation. Proper wiring is paramount: ensure the incoming power is correctly connected to terminals L1, L2, L3, and the motor leads to T1, T2, T3. For safety, always install an appropriate AC input reactor and output filter for EMC compliance and motor protection. Commissioning involves parameter setup, including motor data auto-tuning, setting acceleration/deceleration times, and configuring digital or analog inputs for control commands. The integrated RS485 port facilitates Modbus RTU communication for seamless integration into SCADA or PLC systems.
Operation and Risk Mitigation
Safe operation of the INVT GD350A-055G/075P-4 requires adherence to electrical safety standards and the drive's manual. Always ensure the drive is properly grounded and that the power supply is disconnected before performing any wiring or maintenance. Common troubleshooting involves checking for overcurrent (OC) or overvoltage (OV) faults, which can often be resolved by adjusting acceleration/deceleration ramps or ensuring adequate heatsink cooling. An "Earth Fault" (EF) error typically indicates a short circuit to ground, necessitating a thorough check of motor windings and cabling. Understanding these common fault codes and their resolutions is key to minimizing downtime.
Scalability & Long-Term Value
The INVT GD350A series offers excellent scalability, with various power ratings and options to meet growing industrial demands. Its compatibility with a wide range of industrial motors and its support for common fieldbus protocols (e.g., Profibus, DeviceNet via optional cards) allow for flexible integration into both new and existing automation architectures. The drive's robust design and INVT's commitment to technological advancement ensure long-term value, with firmware updates available to enhance functionality and adapt to evolving industry standards, including support for IIoT integration through its communication capabilities.
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Frequently Asked Questions
What are the main advantages of the INVT GD350A-055G/075P-4 drive?
This VFD drive offers advanced sensorless vector control for precise motor performance. It provides excellent energy efficiency and a high overload capacity for demanding applications. The drive also features a wide input voltage range and robust protection features for reliability.
How does the GD350A-055G/075P-4 handle overload conditions?
The drive is engineered to manage temporary overloads effectively. It can handle 150% of its rated current for up to 60 seconds. Additionally, it supports up to 180% of rated current for short bursts of 10 seconds.
What are the recommended applications for this INVT VFD?
It is ideal for pumps, fans, and compressors requiring variable speed control. The drive also excels in conveyor systems, extruders, and packaging machinery. Its precise torque control makes it suitable for machine tools and textile equipment.
Can I use this VFD with any 3-phase motor?
Yes, the drive is designed for general-purpose applications with standard 3-phase induction motors. It supports a wide range of motor parameters, which can be auto-tuned for optimal performance. Always ensure motor voltage and current ratings are compatible.
What communication options are available for the GD350A-055G/075P-4?
The drive comes standard with an RS485 interface supporting the Modbus RTU protocol. Optional communication cards are available for integration with popular fieldbus networks like Profibus, DeviceNet, and CANopen.
How do I perform motor auto-tuning with this VFD?
Access the parameter menu and select the motor auto-tuning function. The drive will then guide you through the process, which involves running the motor at low speed to gather motor characteristics. Ensure the motor is disconnected from the load during this procedure.
What is the typical input voltage range for this drive?
The INVT GD350A-055G/075P-4 operates on a 3-phase power supply ranging from 380V to 460V. It can tolerate input voltage deviations of -15% to +10% within this range.
What is the IP rating of this VFD drive?
The drive has an IP20 protection rating. This means it is protected against solid objects greater than 12.5mm in diameter and offers no protection against water ingress. It is suitable for clean industrial environments.
How can I prevent common faults like OC or OV on this drive?
Adjust the acceleration and deceleration ramps to be more gradual. Ensure the motor and wiring are correctly sized for the load. Verify that the input power supply voltage is within the drive's acceptable range and consider an AC input reactor.
Does this VFD support IIoT integration?
Yes, through its communication ports and optional fieldbus modules, the drive can be integrated into IIoT platforms. This allows for remote monitoring, data acquisition, and advanced analytics for predictive maintenance.
