Rugged 3.7kw 380V Three Phase Inverter VFD Drive Frequency Converter with Modbus for Industrial Fans

Product Description

Key Features

1.Control methods: V/F control, speed sensorless vector control (SVC)
2.Starting torque: 150% rated torque at 3.0Hz (V/F control); 150% rated torque at 0.5Hz (SVC mode)
3.Overload capacity: G-type: 150% for 60s, 180% for 3s; P-type: 120% for 60s, 150% for 3s
4.Protection: Over-voltage, under-voltage, over-current, overload, phase loss, ground fault, short circuit, overheat, module failure, electronic thermal relay, etc.
5.Communications:  Built-in PID controller (frequency can be preset), standard RS485 communication function (Modbus-RTU).

Core Functions

1.Auto-tune (static and dynamic) for optimal motor matching
2.Built-in PID controller for pressure, flow, or temperature regulation
3.Multi-step speed control (16-segment programmable) and swing frequency operation with adjustable preset frequency, center frequency, and power-off memory.
4.DC braking, Energy consumption braking
5.Automatic voltage stabilization and current limiting/pressure limiting

Key Advantages

1.High steady-state precision: Operating speed steady-state accuracy ≤±0.2% of rated synchronous speed, ensuring stable operation under varying load conditions.
2.Wide frequency range: Vector control up to 500Hz, V/F control up to 5000Hz, suitable for high-speed and ultra-high-speed applications.
3.Low noise operation: Carrier frequency continuously adjustable from 0.5kHz to 16.0kHz to minimize motor noise.

Principle of Work	Vector Control Transducer
Switch Mode	PWM Control
Main Circuit Type	Voltage
Voltage of Power Supply	Low Voltage Variable-Frequency Drive
Link of Transformation	AC-DC-AC Variable-Frequency Drive
Nature of DC Power	Voltage Variable-Frequency Drive
OEM	Acceptable
Transport Package	Carton
Specification	CE, CCC
Trademark	CHRH
Origin	China

About US

Zhejiang Rihong Inverter Co., Ltd, founded in 2004, is a high-tech enterprise integrating design and development, produc-tion, and sales of inverters and soft starters. Since its establishment, the Rihong team, adhering to the quality policy of "Building tomorrow's market with today's quality," has continuously innovated, forged ahead with determination, and strived for excellence through the scientific management and application of information, technology, talent, and equipment. The company now holds a leading position among its industry peers.
Rihong boasts a highly qualified young, and capable design and development team in the field of scientific research. The company has implemented a "Three Highs" strategy -high starting point, high quality, and high level. With top-tier talent,technology, equipment, management, and service, the meticulously developed inverters and soft starters from Rihong are widely used in industries such as steel, oilfields, metal products, pharmaceuticals and chemicals, textile printing and dyeing,machinery and machine tools, and factory construction. Their constant pressure water supply systems are extensively ap-plied in areas such as fire protection, waterworks, high-rise buildings, and residential communities. The company has ob-tained ISo 9001 international quality system certification, European CE certification, and 3C certification. Guided by the phi-losophy of "Surviving on quality, developing through technology," and adhering to the principles of "Quality first, reputation first, customer first," Rihong sincerely welcomes domestic and international business partners to discuss cooperation and create a brilliant future.

FAQ

1.What products does Zhejiang Rihong Inverter Co., Ltd. provide?

We specialize in Variable Frequency Drives(VFDs), AC drives, soft starters, and industrial automation control solutions for various industrial applications.

2. What are the advantages of your products?

Our products feature stable performance, energy saving, easy operation, low noise, strong durability, and reliable protection functions for industrial equipment.

3. Which industries are your products suitable for?

Our products are widely used in machinery manufacturing, textile equipment, water pumps, fans, packaging machines, printing machines, food machinery, and other automation industries.

4. Do you support customized products?

Yes. Rihong supports product customization according to customer requirements, including voltage, power range, control functions, appearance, logo, and packaging customization.

5. How can I choose the right inverter model?

Please provide motor power, voltage, current,application type, and working conditions. Our technical team will recommend the most suitable model for your needs.

6. What voltage options do you offer?

We offer different models including 220V single-phase, 220V three-phase, and 380V three-phase inverters.

7. Are all products tested before shipment?

Yes. All products undergo strict quality inspection and performance testing before delivery.