Table 44: LED fault indicators
Display
Possible causes
Troubleshooting
3
and
1
off
Supply voltage missing
or too low
•
Check the voltage supply and activate, if
necessary.
1
lights up
Device not ready
•
Note the error indicated on the 7-seg‐
ment display or run diagnostics using
SOPAS ET.
•
Switch off the device and turn it on again,
if necessary.
2
lights up
Front screen slightly
contaminated (warning)
•
Clean the front screen.
1
lights up and
2
flashes at 1 Hz
Front screen heavily
contaminated (error)
•
Clean the front screen.
9.3.2
Indicators in the 7-segment display
Display
Possible causes
Troubleshooting
–
Not an error
•
Device is in measuring mode
P
flashes
Firmware update is
being run
•
Wait until firmware update has finished.
E
and
Zahl
alternating Device error
•
Contact SICK Service.
0
Connection to synchro‐
nization master inter‐
rupted
•
Reestablish connection to synchroniza‐
tion master.
1
Temperature too low
(only for Indoor device)
•
The ambient temperature is too low for
measurement mode.
3
Heating not connected
or temperature too
low (only for Outdoor
device)
•
Wait until the device has warmed up.
•
Check heating connection.
•
Contact SICK Service.
Each segment flashes
once in sequence
Device powers up.
•
Wait until the device has started.
Other displays
Display is controlled by
system controller
•
See the system controller documentation
or contact the supplier of the system con‐
troller.
9.3.3
Detailed fault analysis
The device reports any errors that occur in a number of ways. Fault output is staggered,
allowing for an increasingly detailed level of analysis:
Telegram
Communication errors can occur when transmitting telegrams to the device. The device
then returns a fault code. The description of the communication errors can be found in
the telegram listing (see telegram listing no. 8014631 under
System log
Information about the status of the device is displayed in the system log.
SOPAS ET:
Project tree
,
LMS...
,
Service
,
System Status
9
TROUBLESHOOTING
82
O P E R A T I N G I N S T R U C T I O N S | LMS5xx
8013796/1ALS/2021-03 | SICK
Subject to change without notice