The Speaker Company TTP 248M Benutzerhandbuch
29
TTP-248M Bar Code Printer
Service Manua
Service Manua
l
3.10 Motor System Circuit
STEP
PHASE
PHASE
1
2
3
4
INA_R
ON
ON
/INA_R
ON
ON
INB_R
ON
ON
/INB_R
ON
ON
Table 5. Stepping Motor Pattern
C40
15 nF
C41
15 nF
C48
22 0n F
C49
22 0n F
C42
15 nF
C43
15 nF
C29
0. 1u F
VMM
VDD
GND
GND
GND
GND
GND
C28
0. 1u F
GND
MGND
R89
1\5w
R90
1\5w
R93
2. 4K
R97
2. 4k
GND
MGND
MGOD
C52
0. 01 uF
C53
0. 01 uF
R99
8. 2
R100
8. 2
C56
15 00 pF
R103
22 K
VDD
GND
1
2
3
4
JP14
4PIN
STEPPING_ MOTOR
/INB_R
INB_ R
INA_ R
/INA_R
EN_MA
C60
22 00 uF
MGND
MOTER_C
G
N
D
1
NC
2
NC
3
OUT2
4
Vs
5
OUT1
6
BOOT1
7
IN1
8
NC
9
G
N
D
10
G
N
D
11
NC
12
IN2
13
BOOT2
14
Vref
15
SENSE
16
ENABLE
17
NC
18
NC
19
G
N
D
20
U12
L6 20 1PS
G
N
D
1
NC
2
NC
3
OUT2
4
Vs
5
OUT1
6
BOOT1
7
IN1
8
NC
9
G
N
D
10
G
N
D
11
NC
12
IN2
13
BOOT2
14
Vref
15
SENSE
16
ENABLE
17
NC
18
NC
19
G
N
D
20
U13
L6 20 1PS
R/C
1
OSC
2
SYNC
3
POWER_ENABLE
4
IN1
5
IN2
6
IN3
7
IN4
8
G
N
D
9
NC
10
NC
11
VSENSE1
12
OUT4
13
OUT3
14
OUT2
15
OUT1
16
VSENSE2
17
REF1
18
REF2
19
V
C
C
20
U16
L6 50 6D_SO
L6 50 6D_SO
R89A
1\5W
1\5W
R90A
1\5W
1\5W
EN_MB
Fig. 3.8 Stepping Motor Circuit
MOTER_C pin is adjusted by CPU D/A (pin 206) to pass the current of motor.
Pin EN_MA is used to enable U13 Driver.
Pin EN_MB is used to enable U12 Driver.