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Chapter 3
3-54
3.6.6 Controlling the Reversal Motor (M1)
0013-3516
The following is a diagram of the circuit used to control the reversal motor (M1), which is a 4-phase stepping
motor. The circuit has the following functions:
- turning off/on the motor
- controlling the direction of motor rotation
- controlling the speed of motor rotation
F-3-113
[1] ADF controller PCB
[2] reversal motor drive PCB
M1: reversal motor
PI5: reversal motor clock sensor
The CPU (Q18) on the ADF controller PCB sends various motor control signals to the reversal motor driver
PCB, which in turn controls the motor as dictated by these signals.
T-3-12
Signal
name
Description
INA
phase control (direction and speed of rotation)
INB
phase control (direction and speed of rotation)
IN_A
phase control (direction and speed of rotation)
IN_B
phase control (direction and speed of rotation)
T-Vref
motor rotation torque setting
IC18
CPU
IC601
+24U
+24R
A*
A
B
B*
M1
+5R
IN_B
IN_A
INB
INA
T-Vref
J602
J71
J6
PI 5
J14
TRCLK
13
12
11
10
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
9
10
11
12
13
B9
3
1
4
6
2
5
[1]
[2]
Summary of Contents for DADF-R1
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Page 121: ...PARTS REPLACEMENT PROCEDURE Chapter 4 ...
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