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COPYRIGHT© 2000 CANON INC. CANON DADF-G1 REV.0 OCT. 2000
CHAPTER 2 OPERATIONS AND TIMING
2-27
2.8 Controlling the Belt Motor
2.8.1 Outline
The following figure shows an outline of the circuit used to control the belt motor:
The belt motor is a DC motor.
The microprocessor (Q1) on the DADF controller PCB sends to the drive circuit the belt
motor drive signal (BMON), belt motor rotation direction signal (BDIR), and belt motor ro-
tation speed control signal (BMPWM).
When the belt motor (M3) rotates, the belt motor clock sensor (S10) sends the belt motor
clock signal (BCLK1) to the microprocessor (Q1). In response, the microprocessor (Q1)
compares the belt motor clock signal (BCLK1) against the rotation speed stored in advance,
and varies the belt motor rotation speed control signal (PMPWM) so that the speed will
match the setting, ensuring that the belt motor (M3) will always rotate at a specific speed.
F02-208-01
DADF controller PCB
Belt motor
Belt motor
clock sensor
J7-1
J9-B4
BCLK1
BMON
BDIR
BMPWM
Drive
circuit
Q1
CPU
J7-2
M3
S10
Содержание DADF-G1
Страница 2: ......
Страница 10: ...COPYRIGHT 2000 CANON INC CANON DADF G1 REV 0 OCT 2000 CHAPTER 1 GENERAL DESCRIPTION ...
Страница 17: ...COPYRIGHT 2000 CANON INC CANON DADF G1 REV 0 OCT 2000 CHAPTER 2 OPERATIONS AND TIMING ...
Страница 53: ...COPYRIGHT 2000 CANON INC CANON DADF G1 REV 0 OCT 2000 CHAPTER 3 MECHANICAL SYSTEMS ...
Страница 105: ...COPYRIGHT 2000 CANON INC CANON DADF G1 REV 0 OCT 2000 CHAPTER 4 MAINTENANCE AND INSPECTION ...
Страница 109: ...COPYRIGHT 2000 CANON INC CANON DADF G1 REV 0 OCT 2000 CHAPTER 5 TROUBLESHOOTING ...
Страница 142: ...COPYRIGHT 2000 CANON INC CANON DADF G1 REV 0 OCT 2000 APPENDIX ...