Leuze electronic DDLS 508, Operating Instructions Manual

Page: 45 / 58

Diagnostics and troubleshooting
Leuze electronic DDLS 508 46
7 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
table 3.2). Using the LED displays, you can determine the causes and initiate rectification measures .
7.1 Error displays of the operating state LEDs
Table 7.1: PWR LED displays – Causes and measures
Table 7.2: TMP LED displays - Causes and measures
NOTICE
Contact Leuze electronic subsidiary/customer service.

If the specified measures are not successful, contact the responsible Leuze electronic subsidiary or
Leuze electronic customer service (see chapter 9 "Service and support").
LED Color State possible causes Measures
PWR --- OFF
• No supply voltage
• Hardware error
• Check supply voltage.
• Contact Leuze electronic custo
-
mer service (see chapter 9).
Red Flashing Warning message set:
• Optical link interrupted.
• No green and orange
LEDs in
SIGNAL QUALITY indica
-
tor.
• Laser diode of transmitter
defective.
• Temperature warning.
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).
Red Continuous
light
Device error Check display of the operating state
LEDs:
• Temperature warning/error
(TMP) (see table 7.2)
• Optical link (OLK) (see table 7.4)
• Error link (ERL) (see table 7.5)
• Laser pre-failure message
(LSR) (see table 7.3)
Contact Leuze electronic customer
service (see chapter 9).
LED Color State possible causes Measures
TMP Orange Continuous
light
The operating temperature is
above or below the specified
range by up to 5 °C.
Check ambient temperature.
• Initiate measures for lowering
the ambient temperature.
Red Continuous
light
The operating temperature is
above or below the specified
range by more than 5 °C.
Check ambient temperature.
• Initiate measures for lowering
the ambient temperature.
Notice
Data transmission remains active if above or below the operating temperature.
An operating hour counter is started internally that records the operating time outside of the specified
operating temperature.
In this case, the laser diode is excluded from guarantee services.