Schematic overview
EC motor 230 V | remote fan speed control
Solution description
Variable speed control for EC fans. EC fan speed can be remotely adjusted via the potentiometer. It controls fan speed from low to high. In OFF position, the motor is disabled via the dry contact output. 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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