INVT GD270-055-4 Energy Saving VFD for Fan & Pump Drive
The INVT GD270-055-4 is a high-performance, energy-saving Variable Frequency Drive (VFD) specifically engineered for fan and pump applications. This drive excels in delivering precise motor control, significant energy savings, and robust operational reliability. Its core advantages lie in its advanced control algorithms, comprehensive protection features, and user-friendly interface, making it an ideal solution for HVAC systems, water supply networks, and industrial ventilation. Key technical specifications include a power rating of 55 kW (75 HP) for three-phase input and output, an input voltage range of 380-440V at 50/60Hz, and an output frequency range of 0-300Hz, all within an IP20 enclosure.
Product Specifications
| Parameter | Specification |
| :-------------------- | :------------------------------------------- |
| Model Number | GD270-055-4 |
| Power Rating (kW) | 55 |
| Power Rating (HP) | 75 |
| Input Voltage (V) | 380-440 |
| Input Frequency (Hz) | 50/60 |
| Output Voltage (V) | 0-Input Voltage |
| Output Frequency (Hz) | 0-300 |
| Control Method | Sensorless Vector Control, V/f Control |
| Protection Class | IP20 |
| Dimensions (mm) | 230(W) x 395(H) x 247(D) (approximate) |
| Weight (kg) | 20.5 (approximate) |
Core Features & Market Positioning
The INVT GD270-055-4 distinguishes itself through its sophisticated sensorless vector control, which provides exceptional torque response and speed accuracy even under varying loads, crucial for maintaining optimal flow and pressure in pump and fan systems. Its built-in intelligent PID control simplifies closed-loop system management, reducing the need for external controllers and facilitating precise environmental control in HVAC applications. The drive also features a unique "Energy Saving" mode that dynamically adjusts output to minimize power consumption, offering substantial operational cost reductions over the equipment's lifecycle. This focus on efficiency and advanced control positions the GD270 series as a competitive, high-value solution in the industrial VFD market, particularly for applications where energy efficiency and precise performance are paramount.
Key Application Scenarios
This VFD is purpose-built for variable torque loads, making it exceptionally well-suited for building ventilation systems where fan speed modulation directly impacts airflow and energy usage. In water supply and drainage applications, the GD270-055-4 enables precise pressure control and reduces wear on pumps by avoiding frequent start-stop cycles, leading to improved system longevity and reduced maintenance. Furthermore, it finds extensive use in industrial process cooling and heating systems, optimizing fluid circulation and temperature regulation to enhance process efficiency and product quality. Its robust design also supports applications in textile machinery and general industrial automation requiring variable speed and torque.
Practical System Integration Guidance
Integrating the INVT GD270-055-4 into existing systems is streamlined due to its flexible I/O configuration and common communication protocols. For optimal performance in pump and fan drives, utilize the sensorless vector control mode and configure the built-in PID controller. Wiring requires careful attention to power input terminals (L1, L2, L3), motor output terminals (U, V, W), and grounding. Digital inputs can be used for start/stop commands, direction control, and fault resets, while analog inputs are ideal for speed reference signals from pressure or temperature sensors. Programming key parameters, such as acceleration/deceleration times, over-speed limits, and motor thermal protection settings, is accessible via the integrated keypad or optional communication modules, ensuring tailored operation for specific applications.
Operation and Risk Mitigation
Safe operation of the INVT GD270-055-4 mandates adherence to electrical safety standards and proper installation procedures. Ensure the VFD is properly grounded and protected by appropriate fuses or circuit breakers. During commissioning, perform a motor auto-tuning procedure to optimize control parameters for the connected motor. Critical error codes, such as "OC" (Over Current), "OV" (Over Voltage), and "UV" (Under Voltage), indicate abnormal operating conditions that require immediate investigation and shutdown to prevent equipment damage. Regularly inspect connections for signs of wear or damage and ensure adequate ventilation around the VFD to prevent overheating, which can lead to premature failure.
Scalability & Long-Term Value
The INVT GD270-055-4 offers significant long-term value through its inherent energy efficiency and compatibility with modern industrial automation trends. Its modular design and support for various communication protocols, such as Modbus RTU, facilitate integration into Supervisory Control and Data Acquisition (SCADA) systems and other Industrial Internet of Things (IIoT) platforms. This enables remote monitoring, diagnostics, and predictive maintenance, further enhancing operational efficiency and reducing downtime. While direct firmware upgrades may be limited to specific versions, the drive's robust feature set ensures it remains a capable component in evolving industrial environments for years to come.
Frequently Asked Questions
Q1: What are the primary benefits of using the INVT GD270-055-4 for pump applications?
This VFD offers precise speed control, reducing mechanical stress. It optimizes water flow and pressure, preventing costly surges. Energy consumption is significantly lowered by matching pump speed to demand.
Q2: How does the INVT GD270-055-4 achieve energy savings in fan systems?
It utilizes advanced algorithms to precisely control fan speed. This eliminates energy wastage from constant full-speed operation. The drive adjusts airflow to actual requirements, boosting efficiency.
Q3: What is the typical input voltage range for the INVT GD270-055-4?
The drive operates on a standard industrial three-phase power supply. Its specified input voltage range is between 380 and 440 volts. It is designed for 50Hz or 60Hz power grids.
Q4: Can the INVT GD270-055-4 be used with different motor types?
Yes, it supports various AC induction motors. The drive features sensorless vector control for optimal performance. It also includes standard V/f control for simpler applications.
Q5: What protection features are included in the INVT GD270-055-4?
It provides comprehensive motor and drive protection. This includes over-current, over-voltage, and under-voltage protection. Thermal overload and short-circuit protection are also built-in.
Q6: How do I connect an external sensor to the INVT GD270-055-4 for PID control?
Connect the sensor's output signal to an analog input terminal. Configure the VFD's parameters to recognize this input. Set the PID control mode within the drive's menu.
Q7: What is the significance of the IP20 enclosure rating?
The IP20 rating indicates protection against solid objects larger than 12.5mm. It also means no protection against water ingress. This drive is suitable for clean, dry indoor environments.
Q8: Does the INVT GD270-055-4 support communication protocols for integration?
Yes, it supports standard industrial communication protocols. Modbus RTU is commonly available for system integration. This allows for remote monitoring and control.
Q9: How do I perform motor auto-tuning with the INVT GD270-055-4?
Ensure the motor is connected and powered correctly. Access the auto-tuning function in the drive's parameter menu. The drive will then measure motor characteristics automatically.
Q10: What troubleshooting steps should I take if I encounter an "OC" fault?
An "OC" fault indicates an over-current condition. Check for motor short circuits or excessive load. Verify that the motor's full load current is correctly set in the VFD.
