INVT GD350A-022G/030P-4 General Purpose Fan & Pump Inverter VFD
The INVT GD350A-022G/030P-4 is a high-performance Variable Frequency Drive (VFD) engineered for precise control of fans and pumps. This inverter boasts a robust design, offering superior energy efficiency and extended equipment lifespan. Key advantages include its advanced vector control for optimal torque response, a built-in EMC filter to minimize electromagnetic interference, and an intuitive human-machine interface for simplified operation. Technical specifications highlight a rated power of 22kW (30HP) for the GD350A-022G model and 30kW (40HP) for the GD350A-030P model, with an input voltage range of 380-440V AC and an output frequency range of 0-400 Hz.
Product Specifications
| Parameter | Specification |
| :------------------- | :--------------------------------------------- |
| Model | INVT GD350A-022G/030P-4 |
| Rated Power | 22kW (30HP) / 30kW (40HP) |
| Input Voltage | 380-440V AC (3-Phase) |
| Output Frequency | 0-400 Hz |
| Control Method | Sensorless Vector Control, V/f Control |
| Protection Class | IP20 |
| Ambient Temperature | -10°C to +40°C |
| Cooling Method | Forced Air Cooling |
| Communication | RS485 (Modbus RTU) |
Core Features & Market Positioning
The INVT GD350A-022G/030P-4 distinguishes itself through its sophisticated sensorless vector control algorithm, delivering exceptional motor speed and torque regulation even under fluctuating load conditions, a critical advantage in demanding fan and pump applications. Its integrated braking unit and optional braking resistors enhance dynamic performance and provide reliable stopping capabilities. Furthermore, the VFD incorporates a high-capacity EMC filter, ensuring compliance with stringent electromagnetic compatibility standards and preventing interference with other sensitive electronic equipment in industrial environments. Positioned as a premium, cost-effective solution, the GD350A series offers a compelling blend of advanced technology and reliability, catering to sectors that require precise flow and pressure management with significant energy savings.
Key Application Scenarios
This versatile inverter excels in a wide array of industrial applications, particularly those involving centrifugal and positive displacement pumps. It is an ideal choice for HVAC systems, managing air handling units and chillers to optimize comfort and energy consumption. In water supply and treatment plants, the GD350A-022G/030P-4 provides precise control over circulation pumps, boosting pumps, and drainage pumps, ensuring consistent water pressure and efficient operation. Its robust performance also makes it suitable for industrial ventilation systems, large-scale cooling towers, and various process fluid management duties where reliable and efficient motor speed control is paramount.
Practical System Integration Guidance
Integrating the INVT GD350A-022G/030P-4 into existing systems is straightforward, thanks to its user-friendly terminal block and communication capabilities. For basic pump or fan control, connect the motor power leads (U, V, W) to the output terminals and the power supply to the input terminals, observing correct phasing. Ensure proper grounding for safety and noise reduction. Commissioning involves setting motor parameters, such as rated voltage, current, and frequency, via the keypad or communication interface. For advanced control strategies, such as maintaining constant pressure or flow, utilize the PID control functions by configuring the feedback input (e.g., pressure transducer) and target setpoint. The built-in RS485 port facilitates integration into SCADA systems or PLCs using the Modbus RTU protocol for remote monitoring and control.
Operation and Risk Mitigation
Safe operation of the INVT GD350A-022G/030P-4 mandates adherence to electrical safety standards and proper installation procedures. Always disconnect power before performing any wiring or maintenance. The inverter features comprehensive protection functions, including overload, overvoltage, undervoltage, phase loss, and over-temperature protection, which automatically safeguard the motor and the drive. Common troubleshooting involves checking parameter settings if the motor fails to start or exhibits abnormal behavior. Fault codes displayed on the HMI provide diagnostic information; for instance, an "E.OV" code indicates overvoltage, requiring a check of the input power supply or regenerative braking configuration. Always refer to the user manual for specific fault code interpretations and resolution steps.
Scalability & Long-Term Value
The INVT GD350A-022G/030P-4 offers excellent scalability, allowing for seamless integration into larger industrial automation frameworks. Its standard Modbus RTU communication protocol ensures compatibility with most PLCs and distributed control systems, enabling centralized management and data acquisition. The modular design and availability of optional expansion cards, such as communication modules for EtherNet/IP or PROFINET, further enhance its flexibility for future upgrades or integration into Industry 4.0 initiatives. By optimizing motor performance and reducing energy consumption, this VFD provides significant long-term operational cost savings and extends the mechanical life of connected fan and pump equipment, delivering substantial return on investment.
Frequently Asked Questions
What is the power rating of the INVT GD350A-022G/030P-4?
The GD350A-022G model is rated at 22kW (30HP).
The GD350A-030P model is rated at 30kW (40HP).
These ratings are suitable for medium to large fan and pump applications.
How do I connect a motor to the INVT GD350A-022G/030P-4?
Connect motor phase wires (U, V, W) to the VFD output terminals.
Ensure correct phasing and torque connections.
Always follow wiring diagrams in the manual and verify motor specifications.
Can the INVT GD350A-022G/030P-4 be used for constant pressure control?
Yes, the VFD features built-in PID control functions.
Configure the PID loop with a pressure sensor input and desired setpoint.
This enables automatic adjustment of motor speed to maintain constant pressure.
What are the primary benefits of using sensorless vector control?
It provides precise speed and torque regulation without a motor encoder.
This results in improved dynamic response and smoother operation.
Sensorless vector control is ideal for most pump and fan applications.
How do I reset a fault on the INVT GD350A-022G/030P-4?
First, identify the fault code displayed on the HMI.
Address the root cause of the fault, e.g., overload, power issue.
Reset the drive via the keypad or by cycling power if necessary.
What is the input voltage range for this VFD?
The INVT GD350A-022G/030P-4 operates on a 3-phase input voltage.
The specified range is 380V to 440V AC.
Always ensure your power supply is within this specified range.
Does this inverter have communication capabilities?
Yes, it includes a standard RS485 communication port.
This port supports the Modbus RTU protocol for integration.
Optional communication cards can expand compatibility with other networks.
How can I improve energy efficiency with this VFD?
VFDs save energy by matching motor speed to actual load demand.
They reduce energy consumption significantly compared to mechanical throttling.
Proper parameter tuning maximizes efficiency gains for fans and pumps.
What type of motor can be connected to the GD350A-022G/030P-4?
It is designed for standard 3-phase AC induction motors.
Ensure the motor's voltage, current, and frequency ratings match the VFD.
The drive also supports synchronous reluctance motors.
Is an external braking resistor always required?
An external braking resistor is typically needed for applications with frequent deceleration or high inertia loads.
It dissipates excess energy during braking to prevent overvoltage.
Check application requirements to determine if braking is necessary.
