Festo Checkbox Compact CHB-C-X Manual page 115

A. Technical appendix
Error status
...Full, although the buffer zone
is not full.
Good parts in all orientations
are blown back into the small
parts conveyor.
...E 02, although conveyed part
length is shorter than maximum
length permitted.
...E 02 appears in the morning
although the Checkbox
functioned faultlessly the day
before.
...E 04, although only a low
number of bad parts has
passed the test procedure.
Tab. A/3: Other fault states
A-8
Cause
– Control line is defective or
incorrect pin assignment at
the BUFFER/FEEDER
connection.
– Incorrect sensor type is set.
– Conveyed part has a lot of
holes or semi-transparent
conveyed part
– Conveyor speed has been
changed.
– High fluctuations in
temperature e.g. between
day and night
– Conveyor device has been
replaced.
Moveable dirt particles on the
conveyor device.
Action
– Make sure that circuitry is
correct at the
BUFFER/FEEDER connection.
– With CheckKon: Change
sensor type.
With CheckKon:
– Increase conveyor speed.
– Increase exposure time,
division factor
– Vary the grey-value threshold
– Limit field of vision of camera
– Activate filter function.
– With CheckKon: Set the
picture limits.
– Clean the conveyor device
with compressed air.
– Install a separator device in
front of the conveyor device.
Festo P.BE-CB-COMP-EN en 1102d