Diagnostics and troubleshooting
Leuze electronic
BCL 504
i
183
TNT 35/7-24V
11
Diagnostics and troubleshooting
11.1
General causes of errors
11.2
Interface errors
Error
Possible error cause
Measures
Status LED
PWR
Off
• No supply voltage connected to the
device
• Hardware error
❏
Check supply voltage
❏
Send device to customer service
Red, flashing
• Warning
❏
Query diagnostic data and carry out the
resulting measures
Red, continuous light • Error: no function possible
❏
Internal device error, send in device
Orange, continuous
light
• Device in service mode
❏
Reset service mode with webConfig tool
or display
Status LED
BUS
Off
• No supply voltage connected to the
device
• Device not yet recognised by the PROFI-
BUS
❏
Check supply voltage
❏
Send device to customer service
Red, flashing
• Error on the PROFIBUS
❏
Can be corrected by resetting
Red, continuous light • Error on the PROFIBUS
❏
Cannot be corrected by resetting
❏
Send device to customer service
Table 11.1:
General causes of errors
Error
Possible error cause
Measures
No communication via
USB service interface
• Incorrect connection cable
• Connected BCL 504
i
is not
detected
❏
Check connection cable
❏
Install USB driver
No communication via
PROFIBUS.
BUS
status LED con-
tinuous red light
• Incorrect wiring.
• Wrong termination
• Incorrect PROFIBUS address
set
• Incorrect configuration
❏
Check wiring
❏
Check termination
❏
Check PROFIBUS address
❏
Check configuration of the device in the con-
figuration tool
Sporadic errors at the
PROFIBUS
• Incorrect wiring.
• Wrong termination
• Effects due to EMC.
• Overall network expansion
exceeded.
❏
Check wiring
❏
Check termination
❏
Check shielding
❏
Check grounding concept and connection to
FE
❏
Avoid EMC coupling caused by power cables
laid parallel to device lines
❏
Check max. network expansion as a function
of the set baud rate
Table 11.2:
Interface error