INVT GD200A-2R2G-4 High Performance General Vector Inverter

　　The INVT GD200A-2R2G-4 stands as a robust and highly efficient general-purpose frequency inverter within the acclaimed Goodrive200A series.Engineered to deliver superior performance in controlling asynchronous AC induction motors,this 2.2kW model operates on a three-phase 380V supply and embodies a perfect blend of advanced control technology and practical functionality.It is designed to meet the diverse needs of modern industrial automation,offering exceptional reliability and adaptability in challenging operating conditions.As a general vector inverter,it provides precise speed and torque control,making it an indispensable component for a wide array of applications,from water supply systems to material handling and conveyor systems.

　　1.Comprehensive Technical Specifications and Functional Design

　　The GD200A-2R2G-4 is built upon a sophisticated digital signal processor(DSP)platform,which forms the core of its control capabilities.This general-purpose frequency inverter accepts a wide input voltage range from 380V AC with a tolerance of-15%to+10%,ensuring stable operation even in areas with fluctuating or poor grid conditions.Its output frequency range extends from 0 Hz to 400 Hz,catering to both standard and high-speed motor applications.

　　A key feature of this model is its advanced general vector inverter control methodology.It supports both open-loop vector control(SVC)and space vector control(V/F)modes.This allows it to achieve a high starting torque of 150%at just 0.5 Hz,ensuring that heavy loads can be started smoothly and reliably.The speed control ratio of 1:100 and a steady-state speed accuracy of±0.2%under open-loop vector control demonstrate its precision,making it suitable for applications where consistent speed is critical despite load variations.

　　The inverter incorporates a comprehensive set of protective features,including overcurrent,overvoltage,undervoltage,phase loss,and overtemperature protection.Its robust design ensures a high level of immunity to common electrical disturbances,significantly reducing the risk of nuisance tripping and enhancing overall system uptime.

　　2.Key Product Features and Operational Advantages

　　The INVT GD200A-2R2G-4 is packed with features that translate into significant operational benefits for end-users.

　　Advanced Vector Control Performance

　　As a general vector inverter,its core strength lies in its precise motor control capabilities.With a dynamic torque response of less than 20 milliseconds,it can quickly adapt to sudden load changes,maintaining process stability.This high dynamic performance is essential in applications like centrifuges or winding machines,where tension and speed must be tightly regulated.

　　Integrated Braking and EMC Compatibility

　　For a 2.2kW model,the GD200A-2R2G-4 comes with a built-in braking unit,eliminating the need for an external component for many standard braking applications.It supports multiple braking methods,including energy-consuming,flux,DC,and short-circuit braking,enabling rapid and controlled stopping of motors.Furthermore,the inverter is designed with Electromagnetic Compatibility(EMC)in mind.It features a built-in C3 class EMC filter as standard,which can be supplemented with an external C2 filter for applications in environments sensitive to electromagnetic interference.

　　Flexible System Integration and Communication

　　This general-purpose frequency inverter offers extensive connectivity options.It is equipped with multiple analog and digital inputs/outputs,including one analog input configurable for 0-10V or 0-20mA,and another for-10V to+10V.It also features a high-speed pulse input and output,with frequencies up to 50kHz,suitable for precise positioning and speed feedback.Standard RS485 communication with support for the Modbus protocol allows for seamless integration into factory automation networks,enabling centralized monitoring and control.

　　Robust Construction and Versatile Installation

　　The inverter boasts a semi-booksize structure with an independent air duct design.This design efficiently isolates the cooling airflow of the heat sink from the electronic components,preventing dust accumulation and enhancing reliability in dusty environments.It supports multiple installation methods—wall-mounting,flanged,or floor-standing—providing flexibility for different cabinet designs and space constraints.

　　3.Primary Application Areas and Industry Use Cases

　　The versatility of the GD200A-2R2G-4 makes it suitable for a broad spectrum of industries.

　　In industrial automation,it is widely used to drive conveyor belts,feeders,mixers,and machine tool spindles.Its precise speed control ensures consistent product quality and manufacturing efficiency.For building services,its built-in simple water supply function makes it an excellent choice for controlling pumps in residential,commercial,and municipal water supply and drainage systems,helping to stabilize water pressure and save energy.

　　In the material handling sector,this general vector inverter provides the high starting torque needed for hoists,elevators,and crane systems,ensuring smooth acceleration and deceleration for safe and reliable operation.Its capability to withstand harsh environments,including wide temperature variations,humidity,and dusty conditions,also makes it a reliable choice for applications in textiles,packaging,and plastics industries.

　　Expanded Perspective:Understanding Frequency Inverter Technologies

　　To make an informed decision,it is helpful to understand the technological context and the specific niche that the GD200A-2R2G-4 occupies.

　　1.The Technology Spectrum:V/F Control vs.Vector Control

　　The GD200A-2R2G-4 operates effectively in both V/F and vector control modes,but the distinction is crucial.

　　V/F Control:This is a simpler control method where the inverter maintains a constant ratio between voltage(V)and frequency(Hz).It is suitable for applications with constant loads and where high dynamic performance is not critical,such as simple fans and pumps.

　　Vector Control:This is a more advanced technique,which the GD200A-2R2G-4 employs as a general vector inverter.It decouples the control of motor torque and magnetic flux,allowing for independent and precise regulation of each.This results in superior low-speed torque,excellent dynamic response,and accurate speed control even without a feedback encoder(sensorless vector control).This makes it ideal for applications with variable loads,high starting torque requirements,and precise speed regulation needs.

　　Selection Insight:The GD200A-2R2G-4,with its sensorless vector control capability,offers the performance benefits of high-end drives without the complexity and cost of installing and maintaining a feedback encoder,making it a cost-effective general-purpose frequency inverter for a vast majority of industrial applications.

　　2.Critical Implementation and System Design Considerations

　　Integrating this inverter successfully requires attention to a few key details.

　　Pre-Installation Motor Parameter Auto-Tuning:For optimal vector control performance,it is highly recommended to perform a stationary motor parameter auto-tuning procedure.This allows the inverter to accurately identify and set key parameters of the connected motor,such as stator resistance and leakage inductance,thereby maximizing control accuracy and efficiency.

　　Common DC Bus Capability:A significant feature of the entire GD200A series,including this model,is its support for common DC bus configurations.In multi-drive systems,this allows multiple inverters to be connected to a single,shared DC power supply.This architecture enables energy regenerated by one motor during braking to be used by other motors on the same bus,leading to substantial energy savings and reducing the size of the braking units required.

　　Instantaneous Power Failure Ride-Through:The inverter is equipped with a function that allows it to continue operating without tripping during short-term power grid interruptions.It does this by utilizing the kinetic energy of the rotating motor to regenerate power back to the DC bus,maintaining the bus voltage for a short period.This feature is critical in processes where an unexpected shutdown can lead to significant production loss or material waste.

　　Frequently Asked Questions(FAQs)

　　1.What are the key advantages of the vector control in this inverter?

　　The key advantages of the open-loop vector control in the GD200A-2R2G-4 include high starting torque at low speeds,excellent speed regulation accuracy even under changing loads,and fast dynamic response to load disturbances.This ensures smooth operation,prevents stalling,and improves the overall efficiency of the driven system.

　　2.How does the built-in braking unit benefit my application?

　　The built-in braking unit for models up to 30kW,including the 2.2kW GD200A-2R2G-4,simplifies system design and reduces cost.It allows for rapid deceleration of high-inertia loads by efficiently dissipating the regenerative energy through an external braking resistor.This is essential for applications like elevators,centrifuges,or saws that require fast and frequent stopping.

　　3.Can this inverter communicate with a central PLC system?

　　Yes,the GD200A-2R2G-4 comes with a standard built-in RS485 communication port that supports the Modbus protocol.This allows it to be easily networked with a central PLC or SCADA system for remote start/stop commands,speed reference setting,and real-time monitoring of parameters like output current,frequency,and fault status.

　　4.What is the significance of the wide input voltage range?

　　The wide input voltage range of 380V AC(-15%to+10%)means the inverter can operate reliably in areas with unstable or weak power grids where voltage sags and surges are common.This enhances the system's robustness and minimizes downtime caused by voltage-related faults.

　　5.What are the main maintenance points for this inverter?

　　Routine maintenance primarily involves ensuring that the cooling fins and fan are clean and unobstructed to guarantee efficient heat dissipation.Periodically checking the tightness of power and control terminals is also recommended.The inverter's comprehensive fault history log can be accessed to diagnose past issues,aiding in predictive maintenance planning.