
Diagnostics and troubleshooting
Leuze electronic
DDLS 548i
60
Tab. 8.10:
LLC LED displays - Causes and measures
LED
Color State
possible causes
Measures
LLC
Red
Continu-
ous light
• Optical window soiled
• Travel tolerances greater than
the transmission beam spread
• Mounting/alignment insufficient
• Range exceeded
• Environmental influences
(snow, rain, fog)
• Transmitter of the first device
deactivated
• Transmitter of the second de-
vice deactivated
• Clean optical window.
• Eliminate the possibility of environ-
mental influences such as snow, rain,
fog.
• Check the mounting/alignment of the
device:
Screw fitting of the devices
Alignment
Spring tension on the alignment
screws
• End deactivation of the transmitters.