Schematic overview
EC motor | 0-10 V potentiometer | variable fan speed control
Solution description
EC fan speed can be manually adjusted via the potentiometer. It controls fan speed from low to high. There is no OFF position. The supply voltage for the EC fan is 230 VAC. The supply voltage for the potentiometer is 3-15 VDC. The EC motor is controlled via a 1-10 V analogue control signal. Minimum and maximum speed can be adjusted via trimmers on the potentiometer.
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