5-4. Fan Function

1.Circuit Diagram

- Basic Model

- Dispenser Model

2. Explanation for the operation

* TA7291P is the drive IC for the only DC motor, and used for control of the fan motor * One input and output is used for the control of the fan motor

Input

Output

Remark

Motor IC No.5 Pin

Motor IC No.2 Pin

(R:MT2/F:MT3/C:MT1)

(R:MT2/F:MT3/C:MT1)

 

High

High

13V

Low

Low

Stop

- Vref is the reference voltage for the adjustment of the output voltage by the voltage distribution of Vs (Maximum output voltage), and the output voltage applied to the fan is determined by the PWM control using the software.

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Daewoo frs20 manual Fan Function, Basic Model Dispenser Model