Festo Checkbox Compact CHB-C-C Manual page 107

A. Technical appendix
Code Cause
The fault messages marked in grey can be activated/deactivated with CheckKon.
Ambient fault
E01 External fault
E02 Optical fault:
– Glass surfaces on the prism
supports dirty or defective
– Blockage in front of the
optical channel
– Glass surface is misty due to
large difference in tempera-
ture between the Checkbox
and the environment
– Camera registers lower
range of conveyor device.
– Max. parts length exceeded
E04 System recognizes too many
incorrect conveyed parts:
> 75 % of the last 20 parts were
graded as bad parts.
E05 Material blockage (fault):
The Checkbox has not received
a conveyed part for at least
1)
30 seconds .
1) Duration variable, can be set with
CheckKon
Festo P.BE-CB-COMP-EN en 0211a
Remedy
– Signal at connection PLC, check input "External fault:"
HIGH = operation
LOW = fault
– Remove dirt with a soft cloth and non-abrasive cleaning
agent or blow down from the glass surfaces with non-
lubricated compressed air.
Please consult Festo Service if the glass surfaces are
damaged.
– Avoid large differences in temperature.
– With CheckKon:
Correct the setting of the picture limits.
Increase exposure time or ratio encoder frequency/
line frequency
– Check the selection of the sample part type
– Increase tolerance
– With manual supply of parts: Quit fault, supply further
test parts or stop the Checkbox.
– With automatic supply of parts: Fill up small-parts
conveyor, check supply line for material blockage, quit
fault.
A-5