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7. Auto Sweep Motor Circuit
Micro computer
18
17
16
15
1
2
3
4
8
16
IC501
12V
CN12
Auto sweep motor for
horizontal air deflectors
Rotor
0V
15
14
13
1
2
3
4
5
Fig. 7-1 Auto Sweep Motor Circuit (Horizontal air deflectors)
●
Fig. 7-1 shows the Auto sweep motor drive circuit; the signals shown in Fig. 7-2 are output from pins
– of the micro computer.
Micro computer pins
Step width
Horizontal air
deflectors: 10ms.
1
2
3
4
5
6
7
8
Horizontal air deflectors
15
16
17
18
Fig. 7-2 Micro computer Output Signals
●
As the micro computer’s outputs change as shown in Fig. 7-2, the core of the auto sweep motor is excited
to turn the rotor. Table 7-1 shows the rotation angle of horizontal air deflectors.
Rotation angle per step (
°
)
0.0879
Time per step (ms)
10
Horizontal air deflectors
Table 7-1 Auto sweep Motor Rotation
15
18
0301E (30CH6) pg 47-68
16/12/05, 2:49 PM
52
