Hitachi RAF-25NH4 Données Techniques page 167

4.Auto Sweep Motor Circuit
Micro Computer
¥ Fig.4-1 shows the Auto sweep Motor drive cicuit; the signals shown in Fig.4-2 are output from pins
of the micro computer.
Micro computer pins
Damper
¥ As the micro computer's outputs change as shown in Fig.4-2, the core of the stepping motor is excited
to turn the rotor. Table 4-1 shows the rotation angle of horizontal air deflectors.
Horizontal air deflectors
¥ The Auto sweep motor (sub) drive circuit operates in the same way.
39 7
40 6
41 5
42 4
Fig.4-1 Auto Sweep Motor Circuit (Horizontal air deflectors)
1
39
40
41
42
Fig.4-2 Micro computer Output Signals
Table 4-1 Auto sweep Motor Rotation
12V
CN4
12V
9
10
11
12
13
8
IC701
0V
Step width
2 3 4
Rotation angle per step(
0.0882
186
Auto sweep motor for
hirizontal air deflectors
5 6 7
) Time per step(ms.)
°
10
Rotor
-
39 42
8