Diagnostics and troubleshooting
99
AMS 304
i
Leuze electronic
11.2
General causes of errors
11.2.1
Power LED
See also chapter 8.2.2.
11.3
Interface errors
11.3.1
BUS LED
Error
Possible error cause
Measure
PWR LED "OFF"
No supply voltage connected
Check supply voltage.
Hardware error
Send in device.
PWR-LED "flashes red"
Light beam interruption
Check alignment.
Plausibility error
Traverse rate >10m/s.
PWR-LED "static red"
Hardware error
For error description, see display,
It may be necessary to send in the device.
Table 11.1:
General causes of errors
Error
Possible error cause
Measure
BUS LED "OFF"
(no communication via
PROFIBUS)
No supply voltage connected
Check supply voltage.
Incorrect wiring
Check wiring.
Wrong termination
Check termination.
Incorrect PROFIBUS address
Check PROFIBUS address.
PROFIBUS deactivated
Activate PROFIBUS in the AMS 304
i
.
Configuration error
Check configuration.
BUS-LED "flashes red"
Communication error:
configuration failed ("parameter failure")
DP Error: no data exchange
• Check configuration.
• Carry out a reset on the control.
BUS-LED "red"
(sporadic error at the
PROFIBUS)
Incorrect wiring
Check wiring.
Wrong termination
Check termination.
Effects due to EMC
• Check shielding.
• Check grounding concept and connection to FE.
• Avoid EMC coupling caused by power cables laid
parallel to device lines.
Overall network expansion exceeded
Check max. network expansion as a function of the
baud rate set.
Table 11.2:
Bus error