FujiFilm CR-IR341 Service Manual page 127

C 1 2
ONTENTS
Fig. 2.3.2 Suction Cup HP Positioning (2/2)
2w-1-2
phase
3)
Sensor edge
detection
4)
HP positioning
Explanation of HP Detection Operation
The home position (HP) is detected when the sensor
arm attached to the suction arm shields SB1.
The suction cups are moved by MB1 driving and stops
at their home position according to the following steps.
1) Positioning for suction cup HP detection preparation
¥ When SB1 is OPEN: Positioning operation (backward
movement) is performed to seek the home position, and
after SB1 is CLOSE, the suction cups are fed by a
specified amount and then stop.
¥ When SB1 is CLOSE: Proceed to the next step.
2) Return for suction cup HP detection
The return operation (forward movement) is performed,
and after SB is OPEN, the suction cups are fed by a
specified amount and stop.
3) Suction cup HP detection: Sensor edge detection
The positioning operation is performed by 1-pulse
driving, and the sensor edge is detected when SB1 is
CLOSE.
4) Suction cup HP detection: HP positioning
The suction cups are fed from the edge by a specified
amount, and the positioning operation is stopped.
If normal, this stop point represents the home position.
009-051-04
05.31.99 FM2460
3 4 5 6
A
1-pulse driving process Parameter Suction cup 1-pulse driving
(HP movement 1) DRIVE (MB1/BB52)
Is SB1 closed within TB54?
N
Y
MB1 phase start-point
forced return (2-phase)
Suction cup driving (HP movement 2)
DRIVE (MB1/PB54)
DELAY TB51
Is SB1 closed?
N
Y
END
CR-IR341 Service Manual
7 8 9 10
Level 2 error
23E7
Suction cup HP detection retry
Is the number of retries made greater
than the retry count (NB51)?
N
Y
Level 0 error
03E8
Suction cup movement error
SB1
Sensor arm
Suction arm
Suction cup
Suction cup HP positioning condition
MD - 64
FR1H0311.EPS
MB1
FR1H0312.EPS
MD - 64