Precision Fan Speed Control for External Rotor Motors
Designed for precise speed regulation of single-phase external rotor motor fans. It provides smooth, infinite speed control between approximately 30% and 100% of full speed, allowing fine adjustment for optimal air performance and energy efficiency.
Optimised for Cooling and Performance
VA Series controllers are recommended for external rotor motor fans to ensure adequate motor cooling under reduced-speed conditions. The VA500B-POT model is equipped with a 500K potentiometer, enabling reliable adjustment of the minimum fan speed and providing stable performance across a wide range of applications.
Installation and Operation
This potentiometer-type controller is intended for internal equipment mounting rather than a wall plate. A wiring diagram is included for easy and accurate installation. When controlling multiple fans, all units should be of the same type and capacity, and their total load must not exceed 85% of the controller’s full load current (FLC) rating.
Key Features
- Infinite speed control: Adjustable from 30% to 100% of full fan speed
- 500K potentiometer: Allows precise setting of minimum speed limit
- High compatibility: Suitable for single-phase motors up to 2 amps
- Enhanced cooling: Designed to maintain safe motor operation at lower speeds
- Compact design: For integration within fan or equipment enclosures
- Fantech quality assurance: Reliable performance and long-life electronics
Applications
The VA500B-POT 500K Potentiometer is ideal for HVAC systems, ventilation units, and air movement equipment requiring adjustable airflow. It offers excellent control in applications such as fan coils, inline fans, and extraction systems where fine-tuned performance and noise reduction are essential.
