Diagnosis and troubleshooting
Leuze electronic GmbH + Co. KG
BPS 307i
72
Tab. 10.5:
Position measurement errors – causes and measures
Error
Possible cause
Measures
Measurement value or
reading quality is contin-
uously instable
Soiling of the BPS optics
Clean the optics of the BPS
Measurement value or
reading quality is poor
• at certain position
values
• always at the same
position values
Soiling of the bar code tape
Clean the bar code tape
Replace the bar code tape
No measurement value
can be determined
No code in scanning beam
Code not in the working range of the
BPS
Align the scanning beam with the
bar code tape
Align the BPS with the bar code tape
(working range 50 mm … 170 mm)
Faulty measurement
value
Wrong bar code tape
BCB grid different from BPS configura-
tion
Preset or offset active.
Incorrect unit or resolution configured.
Change BPS configuration to the
bar code tape that is being used