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8
Diagnostics and troubleshooting
What to do in case of failure?
The LED displays in the control panel provide information about possible warnings or errors (see chapter
3.3.1 "Indicators and operational controls in the control panel"). Using the LED displays, you can determine
the causes and initiate rectification measures.
NOTICE
The status of all LED indicators can also be interrogated via the integrated web server in the
sense of remote diagnosis (see chapter 9 "Leuze electronic webConfig tool – Remote mainte-
nance").
NOTICE
Contact Leuze electronic subsidiary/customer service!
Ä If the specified measures are not successful, contact the responsible Leuze electronic sub-
sidiary or Leuze electronic customer service (see chapter 11 "Service and support").
8.1
Error displays of the operating state LEDs
Tab. 8.1:
PWR LED displays – Causes and measures
LED
Color
PWR ---
Red
Red
Leuze electronic
State
possible causes
OFF
• No supply voltage
• Hardware error
Flashing
Warning message set:
• Optical link interrupted.
• No green and orange LEDs
in SIGNAL QUALITY indica-
tor.
• Laser diode of transmitter
defective.
• Temperature warning.
Continu-
Device error
ous light
Measures
• Check supply voltage.
• Contact Leuze electronic customer
service (see chapter 11 "Service and
support").
Check cause for the reduced SIG-
NAL QUALITY:
• Device alignment.
• Clean optical window.
• Eliminate the possibility of environ-
mental influences such as snow, rain,
fog.
• Laser diode: at end of life expectancy
Check LSR LED.
Check display of the operating state
LEDs:
• Temperature warning/error (TMP)
• Optical link (OLK)
• Error link (ERL)
• Laser pre-failure message (LSR)
Contact Leuze electronic customer service
(see chapter 11 "Service and support").
DDLS 548i
Diagnostics and troubleshooting
55
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