10-4
October 2000 © TOSHIBA TEC
MR-3011/3012 DESCRIPTION OF CIRCUITS
10.4 Drive Circuit for Reverse Motor
This circuit controls the rotation/stoppage, direction of rotation and motor current of the reverse motor.
The following drive pattern signals are input to IC9-6, 7, 21 and 22pins to control the direction and speed of
motor rotation. The motor current value is set by separating the output voltage of the D/A converter at R86 and
R89, and inputting it into IC9-4 and 24pins. Motor current value can be changed by changing the D/A output
voltage.
Drive pattern signals....1-2 phase excitation
PH+24V
CN12.6
PH+24V
CN12.5
A
CN12.4
5
6
4
Reverse motor
RVMOT
2
1
PM+24V
+
C40
18
Out*B
INA
RETM_A
7
19
NC5
27
LG
2
D8
1
RETM_RA
TP43
1
TP52
1
TP44
1
TP53
1
1 1
2
R86
PGND
2
1
2
1
C26
R89
SGND
*A
CN12.3
3
B
CN12.2
2
*B
CN12.1
1
A
K
IN*A
6
RETM_*A
INB
21
RETM_B
IN*B
22
RETM_*B
TP45
13
RsA
RsB
15
PGA
8
PGB
20
VrefA
4
VrefB
24
VsA
5
VsB
23
NC1
2
NC2
9
NC3
11
NC4
12
NC6
26
2
R83
1
R82
1
2
PGND
R97
2
1
2
1
C37
C38
R96
2
1
2
1
PGND
1
TP42
IC9
OutB
15
COM
14
Out*A
10
12
OutA
A
K
2
1
ZD3
A 2
D7
K 1
A 2
D6
K 1
A 2
D5
K 1
R93
C67
2
1
C55
R92
2
2
1
1
2
1
VCC
1
C/RB
C/RA
25
3
C54
2
1
+
SGND
+5V
1
2
RA4.1
RA4.2
4
3
RA4.3
6
5
RA4.4
8
7
SGND
RETM_A
RETM_*A
RETM_B
RETM_*B
#Chapter_10.p65
10/5/00, 9:57 AM
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