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Troubleshooting
41
© SICK AG • Subject to change without notice • 8016441/2013-11-22
10 Troubleshooting
Possible faults and rectification measures are described in the table below.
In case of faults that cannot be rectified using the information below, please contact the manufacturer. A list of
representatives can be found on the back page.
10.1 Warning messages
Display
Meaning/Possible causes
Troubleshooting
NoWarn
No warning
–
WrnLsr
The laser is still ready for operation but is at
the end of its service life.
Keep a replacement device ready for use.
WrnLvl
The current received signal level is below the
recommended value.
• Clean the outer optical surfaces.
• Reduce the distance between the devices.
• Realign the devices
→
See Page 31,
WrnTmp
The internal temperature of the device is ap-
proaching the limit of the permissible range.
→
For the permissible ambient temperature,
• Check ambient temperature. Provide
better ventilation if necessary.
• Shield the device from radiant heat, e.g.
shade the device from direct sunlight.
• At low ambient temperatures, use a hea-
ting system for the device.
• At high ambient temperatures, use a
cooling housing.
WrnOvr
Receiver unit is not aligned correctly.
If the warning message is displayed for more
than 10 seconds:
• Realign the devices
→
Follow the instruc-
tions on Page 31, Chapter 7.1 until the
warning message disappears permanent-
ly.
Table 14: Warning messages
10.2 Error messages
Display
Meaning/Possible causes
Troubleshooting
NoErr
No error
–
ErrLsr
The service life of the laser has been excee-
ded.
Replace the device.
ErrLvl
The current received signal level is below the
warning threshold.
• Clean the outer optical surfaces.
• Reduce the distance between the devices.
• Realign the devices
→
See Page 31,
ErrTmp
The internal temperature of the device is
outside the permissible range.
→
For the permissible ambient temperature,
• Check ambient temperature. Provide
better ventilation if necessary.
• Shield the device from radiant heat, e.g.
shade the device from direct sunlight.
• At low ambient temperatures, use a hea-
ting system for the device.
• At high ambient temperatures, use a
cooling housing.