Diagnostics and troubleshooting
Leuze electronic
DDLS 508
48
Table 7.6:
LINK and LINK/ACT LED displays – Causes and measures
7.2
Error displays and STATUS LED for remote diagnosis
Table 7.7:
STATUS LED displays - Causes and measures
7.3
Error displays of the operating mode LEDs
Table 7.8:
ADJ LED displays - Causes and measures
LED
Color
State
possible causes
Measures
LINK
LINK/
ACT
---
OFF
No cable-connected link to the
connected device.
Check Ethernet cable connection.
LED
Color State
possible causes
Measures
STATUS
LED
Green Flashing Warning message(s) set:
• SIGNAL QUALITY indica
-
tor without green LED.
• Temperature, warning or
error (TMP).
• Laser pre-failure (LSR).
• Link Loss Counter has trig
-
gered (LLC).
Check cause for the reduced
SIGNAL QUALITY:
• Device alignment.
• Clean optical window.
• Eliminate the possibility of envi
-
ronmental influences such as
snow, rain, fog.
• Laser diode: at end of life expec
-
tancy
Check LSR LED (see table 7.3).
Check ambient temperature
• Initiate measures for lowering
the ambient temperature.
---
OFF
The transmitter is deactivated:
• No supply voltage.
• SIGNAL QUALITY indica
-
tor shows only red LEDs.
• The LINK and LINK/ACT
LEDs are off.
Check supply voltage.
Check Ethernet cable connection.
Check cause for the reduced
SIGNAL QUALITY:
• Device alignment
• Clean optical window
• Eliminate the possibility of envi
-
ronmental influences such as
snow, rain, fog
• Laser diode: at end of life expec
-
tancy
Check LSR LED (see table 7.3).
LED
Color
State
possible causes
Measures
ADJ
Green Flashing
• The “Adjust” operating
mode is not activated on the
second device.
• In the “Adjust” operating
mode, the supply voltage of
the second device was swit
-
ched off/interrupted.
Activate the “Adjust” operating mode
on the second device (see