Relationship Between The Feed Belt And The Belt; (Bmon), Belt Motor; Rotation Speed Control; Signal (Bmpwm) - Canon DADF-G1 Service Manual

CHAPTER 2 OPERATIONS AND TIMING
2.8.2 Relationship Between the Feed Belt and the Belt Motor Drive Signal
(BMON), Belt Motor Rotation Direction Signal (BDIR), and Belt Motor
Rotation Speed Control Signal (BMPWM)
Belt motor Belt motor rotation Belt motor rotation
drive signal direction signal speed control signal
(BMON) (BDIR)
'1' '1'
'1' '1'
'1' '0'
'1' '0'
'0' '1'/'0'
2.8.3 Protecting the Belt Motor from Overcurrent
An overcurrnt can occur depending on the type and condition of an original. An
overcurrent control circuit is used to protect the power supply circuit against excess loads
because of overcurrent while the belt is moving in pickup direction.
2-28
(BMPWM)
Pulse
'0'
Pulse
'0'
'1'/'0'
T02-208-01
COPYRIGHT© 2000 CANON INC.
Feed belt operation
Feed belt rotates in pickup (CCW) direction.
Feed belt rotates in pickup (CCW) direction
by inertia.
Feed belt rotates in delivery (CW) direction.
Feed belt rotates in delivery (CW) direction
by inertia.
Feed belt stops.
CANON DADF-G1 REV.0 OCT. 2000