Hitachi RAK-35NH5 - Page 230

4. Auto Sweep Motor Circuit
¥ 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.
¥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.
12V
CN8
IC711
0V
12V
Auto sweep motor for
hirizontal air deflectors
Rotor
Fig.4-1 Auto Sweep Motor Circuit (Horizontal air deflectors)
Micro computer pins Step width
12345678
Damper
Fig.4-2 Micro computer Output Signals
Table 4-1 Auto sweep Motor Rotation
Horizontal air deflectors 0.0882
Rotation angle per step( ° )Time per step(ms.)
10
Micro Computer
15 18
18
17
16
15
18
17
16
15
4
3
2
1
13
14
15
16
3
4
5
8
9
1
2
MODEL RAD-25NH5, RAD-35NH5, RAK-18NH5, RAK-25NH5, RAK-35NH5, RAK-50NH5
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