Diagnostics and troubleshooting
Leuze electronic
BPS 307i
73
Table 10.3:
Process interface errors – causes and measures
Table 10.4:
LED indicators - interface errors – causes and measures
Table 10.5:
Position measurement errors – causes and measures
Error
Possible cause
Measures
Sporadic interface
error
• Check wiring for proper con
-
tacting
Check wiring:
• Check wire shielding
• Check wires used
• EMC coupling
• Observe contact quality of screwed or
soldered contacts in the wiring
• Avoid EMC coupling caused by power
cables laid parallel to device lines
• Separate laying of power and data com
-
munications cables
• Maximum cable length
exceeded
• Check cable lengths according to the
data rate
Error
Possible cause
Measures
BUS LED “Off”
• No supply voltage connected
to the device
• Check supply voltage
• Hardware error
• Send device to customer service
BUS LED “red
flashing”
• Incorrect wiring
• Check wiring
• Communication error
• Check SSI parameters
• Carry out a reset on the control
• Different protocol settings
• Check protocol settings
Error
Possible cause
Measures
Measurement value
or reading quality is
continuously instable
• Soiling of the BPS optics
• Clean the optics of the BPS
Measurement value
or reading quality is
poor
• at certain posi
-
tion 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 deter
-
mined
• 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 measure
-
ment value
• Wrong bar code tape
BCB grid different from BPS
configuration
• Change BPS configuration to the
bar code tape that is being used