How to control AC fan speed? Here you can find continuous variable speed controllers for single or three phase AC voltage controllable motors and fans in HVAC applications. Electronic variable fan speed controllers allow you to regulate the speed of AC fans manually or demand based. Phase angle control (TRIAC technology) is used to adjust the motor voltage and to control the fan speed. Thanks to this technology, these speed controllers are completely silent. Depending on the motor type, some additional motor noise at low speed might occur. Fan speed controllers offer you advantages in terms of comfort - optimisation of the supply of fresh air in your building, in terms of health - improvement of the indoor air quality as well as in environmental terms - thanks to the optimised airflow, your ventilation system will be more energy efficient.
Manual motor control
These electronic fan speed controllers are designed for continuous variable speed control of single phase voltage controllable motors with a maximum current of 10 A. Via the integrated potentiometer, the fan speed can be regulated manually. Some devices control the fan from high to low speed and other devices from low to high speed. Some product series feature a potentiometer, separate ON-OFF switch and the possibility to choose between soft start or kick start acceleration of the motor.
These electronic fan speed controllers are designed for continuous variable speed control of single- or three phase voltage controllable motors with a maximum current of 10 A. An analogue control signal is required as fan speed reference. The motor voltage is regulated in function of this analogue control signal. There are many possibilities to generate an analogue control signal. Following examples are commonly used in the HVAC industry: a control switch, a potentiometer, a transmitter, an intelligent sensor, etc.
These fan speed controllers automatically regulate the speed of single phase voltage controllable motors with a maximum current of 6 A in function of the measured temperature. The maximum speed can be adjusted via an internal trimmer. The minimum speed and temperature setpoint can be adjusted via external potentiometers. Some devices also feature integrated controls for electric heating elements.
Manual or demand based ventilation control for single phase voltage controllable motors up to 1,5 A. The fan speed can be selected manually via the 3-button keyboard or automatically. In automatic mode, a Sentera HVAC sensor can be connected to the RDCZ controller to regulate the fan speed in function of the measured temperature, relative humidity, carbon dioxide level or differential pressure. RDCZ is designed for inset or surface mounting.
Sentera provides innovative, easy-to-use control solutions for HVAC installations and ventilation systems. How to optimise your comfort, indoor air quality, safety and overall wellbeing? We have the answer!