INVT GD20-090G-4 High Performance Compact Inverter VFD

The INVT GD20-090G-4 High Performance Compact Inverter VFD is a robust and versatile solution for a wide array of industrial automation needs. Engineered for superior drive and control performance, this inverter leverages sensorless vector control technology to deliver exceptional efficiency and reliability. Its compact design optimizes installation space, making it suitable for various OEM equipment markets and diverse applications within sectors like water treatment, printing and packaging, paper machinery, and more.

Product Specifications

| Parameter                 | Value                                  |

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

| Model                     | GD20-090G-4                            |

| Rated Output Power (kW)   | 90                                     |

| Rated Output Current (A)  | 180                                    |

| Main Power Supply (V)     | 400 (3-Phase)                          |

| Output Frequency (Hz)     | 0-400                                  |

| Enclosure                 | IP20                                   |

| Overload Capacity         | 150% for 1 minute                      |

| Starting Torque           | 150% at 0.5 Hz (Sensorless Vector Control) |

| Built-in Braking Unit     | Standard (for ≤37kW), Optional (for 45-110kW) |

| Communication Protocol    | RS485 (Modbus RTU)                     |

| Operating Temperature (°C)| -10 to +50                             |

| Dimensions (W x H x D) mm | Not specified, but compact design      |

| Weight (kg)               | Approximately 8 (shipping weight)      |

| Fuse (A)                  | 325                                    |

| Breaker (A)               | 315                                    |

| Contactor (A)             | 245                                    |

| Input Reactor             | ACL2-110-4                             |

| Output Reactor            | OCL2-110-4                             |

| Input Filter              | FLT-P04240L-B                          |

| Output Filter             | FLT-L04240L-B                          |

| Braking Resistor (Ω)      | 5.4 (at 100% braking torque)           |

Core Features & Market Positioning

The INVT GD20-090G-4 stands out in the competitive industrial automation market due to its advanced sensorless vector control, which provides precise control over speed and torque without the need for an encoder. This technology significantly enhances performance, especially in applications demanding high starting torque and accurate speed regulation, such as material handling and complex machinery. The inverter’s compact design is a key advantage, allowing for side-by-side installation in many cases, thus saving valuable control panel space. Its robust hardware configurations and enriched software functions contribute to its reliability and usability across various demanding industrial environments. The inclusion of a certified STO (Safe Torque Off) function further solidifies its position as a safety-conscious and dependable industrial component.

Key Application Scenarios

This high-performance inverter is ideally suited for a broad spectrum of industrial applications where precise motor control, energy efficiency, and operational reliability are paramount. Its sensorless vector control excels in scenarios such as pumps and fans, where variable speed drives can yield substantial energy savings through optimized V/F curves. It is also highly effective in winding equipment, paper machinery, plastic machinery, printing and packaging lines, and textile machinery, where consistent torque and speed are critical for product quality and process efficiency. The GD20-090G-4's ability to handle 150% starting torque at low frequencies makes it suitable for applications with high inertia loads or those requiring rapid acceleration and deceleration. Furthermore, its suitability for water treatment plants and HVAC systems underscores its versatility in demanding environmental control applications.

Practical System Integration Guidance

Integrating the INVT GD20-090G-4 into existing or new systems is streamlined by its design and available documentation. The inverter supports multiple installation methods; models 4kW and above, including the GD20-090G-4, support wall mounting and flange mounting, facilitating flexible cabinet integration. For enhanced electromagnetic compatibility (EMC) in industrial environments, an optional C3 filter can be employed. The unit features standard RS485 communication for seamless integration with SCADA systems and PLCs, utilizing the Modbus RTU protocol. Wiring diagrams for both the main circuit and control circuits are detailed in the operation manual, ensuring correct and safe connections. Parameter settings can be managed via the integrated keypad or an optional external keypad with parameter copy function, simplifying setup and replication across multiple units.

Operation and Risk Mitigation

Safe and efficient operation of the INVT GD20-090G-4 is supported by comprehensive protection functions and clear operating procedures. The inverter provides robust fault protection against overcurrent, overvoltage, undervoltage, overheating, and overload conditions, with fault information logged for troubleshooting. The built-in Safety Torque Off (STO) function is a critical safety feature that enables rapid and safe de-energization of the motor. During operation, it is essential to avoid touching the heatsink as it can become hot. Electrostatic discharge precautions should be taken when working inside the VFD. In case of instantaneous power loss, the inverter is designed for uninterrupted running by feeding back energy, which is crucial for applications requiring continuous operation. Error and fault codes are displayed on the keypad, and the last six faults are recorded in function codes P07.27 to P07.32 for diagnostic purposes.

Scalability & Long-Term Value

The INVT GD20-090G-4 offers significant long-term value through its integrated functionalities and potential for system expansion. Its support for Modbus RTU communication facilitates integration into broader industrial Internet of Things (IIoT) ecosystems and supervisory control systems. The option for DC bus sharing among multiple inverters (for 380V models ≥4kW) presents a scalable solution for larger installations, optimizing system efficiency and reducing component count. The ability to perform motor parameter autotuning (static or rotating) ensures optimal performance throughout the motor's lifespan and allows for easy replacement or upgrade of motors without extensive recalibration. Furthermore, features like basic PLC functionality and multi-step speed control provide inherent programmability, allowing the inverter to adapt to evolving process requirements without necessitating external control hardware.

Frequently Asked Questions (FAQs)

1. What are the primary advantages of the INVT GD20-090G-4?

The GD20-090G-4 excels with its sensorless vector control, offering precise torque and speed regulation. Its compact design saves valuable installation space, making it ideal for tight control panels. It also features a certified Safe Torque Off (STO) function for enhanced operational safety.

2. Which industries commonly utilize the INVT GD20-090G-4?

This inverter is widely used in water treatment, printing and packaging, paper machinery, plastic processing, and textile manufacturing. Its versatility also extends to HVAC systems and general pump/fan applications.

3. What are the key technical specifications of the INVT GD20-090G-4?

It boasts a 90kW rated power and 180A rated output current for a 400V, 3-phase supply. It operates within a 0-400 Hz output frequency range and has an IP20 enclosure rating.

4. How does the sensorless vector control of the GD20-090G-4 benefit users?

Sensorless vector control provides accurate motor speed and torque control without requiring an encoder, simplifying installation and reducing costs. It ensures robust performance even with varying loads and is particularly effective for applications demanding high starting torque.

5. What installation considerations are important for the INVT GD20-090G-4?

For models 4kW and above, wall or flange mounting is supported. Ensure adequate ventilation and consider an optional C3 filter for improved EMC performance in industrial settings.

6. Does the GD20-090G-4 have built-in safety features?

Yes, it includes a certified Safe Torque Off (STO) function, which is crucial for safe maintenance and emergency stop procedures. It also provides comprehensive protection against common electrical faults.

7. What communication protocols does the INVT GD20-090G-4 support?

The inverter supports RS485 communication using the Modbus RTU protocol. This allows for easy integration into networked control systems and automation platforms.

8. Can the GD20-090G-4 control multiple motors?

While primarily designed for single-motor control, some INVT inverters support driving multiple motors with a single unit, depending on load and application requirements. Consult the specific manual for detailed guidance on multi-motor configurations.

9. What are the options for braking with the GD20-090G-4?

The inverter supports various braking methods, including DC braking, flux braking, and dynamic braking. A braking unit is standard for lower power ratings and optional for higher ratings like the 90kW model, along with an external braking resistor.

10. How can I access parameter settings and program the GD20-090G-4?

Parameters can be accessed and modified using the integrated keypad or an optional external keypad with a parameter copy function. The manual provides detailed information on function codes and programming procedures.