Canon STAPLER SORTER-L1/MS-C1 Service Manual page 67

3. Controlling the bin shift motor
The following diagram shows the control circuit used to control the bin shift motor.
The bin shift motor (M4) is a DC motor, and is controlled by its drive circuit to move up and
down the bin unit.
The drive system of the bin unit is equipped with the following sensors and switches to monitor
specific operations:
• Lead Cam Home Position Sensor (PI1)
Detects the stop position of the lead cam.
• Bin Shift motor Clock Sensor (PI2)
Detects the speed at which the bin unit moves up/down for control.
• Bin Unit Shift Home Position/Lower Limit Sensor (PI3), Bin Unit Upper Limit Sensor (PI4)
Detect an overrun condition of the bin unit.
• Stapler Unit Home Position Switch (SW1)
When the stapler unit is not at home position, the stapler unit home position switch (SW1)
cuts off the 24V current, thereby preventing the bin shift motor (M4) from rotating, to
prevent contact between the bin unit and the stapler unit.
• Load Detecting Switch (SW3)
If the bin unit hits against something when it moves down, the load detecting switch will
open to cut 24V current, thereby stopping the bin shift motor (M4).
Stapler unit home
position switch
SW1
NO
BMUP
BMDWN
Q4
CPU
PWM
COPYRIGHT © 1998 CANON INC. CANON STAPLER SOTRER-L1 MS-C1 REV.0 NOV. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Load detecting Bin unit upper
switch limit sensor
SW3
PI4
NO
Drive circuit
Figure 2-506
CHAPTER 2 OPERATIONS AND TIMING
Bin unit shift homeposition/
lower limit sensor
PI3
LCPD
Bin shift motor
Bin shift motor
clock sensor
M4
PI2
Lead cam home
position sensor
PI1
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