Devices With Special Features; Troubleshooting - SICK WL24-2 Instrucciones De Operación

9

DEVICES WITH SPECIAL FEATURES

9 Devices with special features
10

Troubleshooting

12
WL24-2xx4x: with static front-screen heating for use in environments with gradual tem‐
perature changes within the +5 °C ... +15 °C range.
WL24-2B230S02: glass front screen
WL24-2V240S03: M16 connector, glass front screen, dynamic power heating on the
rear side of the glass, current consumption: 150 mA. The dynamic power heating is
automatically switched on and off depending on the ambient temperature (23-26 °C).
For the use of quick temperature changes in the range of <0 °C...+10 °C
WL24-2V530S04: M12 male connector, 5-pin, glass front screen, dynamic power heat‐
ing on the rear side of the glass, current consumption: 150 mA. The dynamic power
heating is automatically switched on and off depending on the ambient temperature
(23-26 °C). For the use of quick temperature changes in the range of <0 °C...+10 °C
WL24-2R240S05: PG9 connector
WL24-2B430T01: housing is coated with Teflon
The Troubleshooting table indicates measures to be taken if the sensor stops working.
Table 8: Troubleshooting
LED indicator/fault pattern
Yellow LED does not light up
even though the light beam is
aligned to the reflector and
there is no object in the path of
the beam
No object in beam path, no out‐
put signal
Yellow LED flashes; if Alarm is
present then take note of the
corresponding output signal
Cause
No voltage or voltage below
the limit values
Voltage interruptions
Sensor is faulty
Test input (Test) is not con‐
nected properly
Sensor is still ready for opera‐
tion, but the operating condi‐
tions are not ideal
Measures
Check the power supply,
check all electrical connec‐
tions (cables and plug connec‐
tions)
Ensure there is a stable power
supply without interruptions
If the power supply is OK,
replace the sensor
Check connection of the test
input. When using female
cable connectors with LED
indicators, make sure the test
input is assigned correspond‐
ingly.
Check operating conditions:
align light beam (light stop)
completely on the reflector /
cleaning of optical surfaces
(sensor and reflector) /if
potentiometer is set to max.
sensitivity: reduce distance
between sensor and reflector
and check reflector type /
reflector is not suitable for
selected application (we rec‐
ommend using only SICK
reflectors) /Check sensing
range and adjust if neces‐
sary. /distance between sen‐
sor and reflector is too large
8008783.14BT | SICK
Subject to change without notice