- Precise Fan Speed Control – Designed to regulate the speed of a single 3-phase fan motor using a frequency inverter system, ensuring smooth and accurate airflow control in ventilation and air movement systems.
- Multiple Control Input Options – Supports external speed adjustment through 0–10V, 0–20 mA, or PWM signals, providing flexible integration with various building management or automation systems.
- Integrated Motor Protection – Compatible with thermostat (TB) and thermistor (TP) motor protection connections to help safeguard fan motors against overheating and electrical faults.
- Professional Industrial Design – Built with a durable enclosure rated IP54 to protect internal electronics from dust and moisture, making it suitable for demanding technical environments.
- Reliable Monitoring & Control Features – Includes a 10V DC output for an external potentiometer, enable contact function, and potential-free operation notification for convenient control and system monitoring.
The FRQ-4A V2 3-Phase Fan Speed Controller is a reliable frequency inverter designed for precise control of a single three-phase fan motor in ventilation systems. Engineered for compatibility with motors featuring suitable insulation systems and bearings such as IE2 motors, this controller provides accurate speed adjustment through multiple input options including 0–10V, 0–20 mA, and PWM signals. It features a built-in 10V DC output for external potentiometer control, enable contact functionality, and potential-free operation notification for efficient monitoring. Designed for stable performance and safety, the unit supports motor protection through thermostats (TB) or thermistors (TP) and complies with electromagnetic interference standards EN 61000-6-3 and EN 61000-6-2. With an IP54 enclosure rating and durable industrial construction, the FRQ-4A V2 controller is suitable for professional ventilation applications where reliable speed regulation and system protection are essential.
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