SICK W12 - Page 38

Information on the IO-Link functions (IODD) can be found in the enclosed IO-Link
photoelectric sensor operating instructions or downloaded from www.sick.com under
the device part number.
7 Troubleshooting
The Troubleshooting table indicates measures to be taken if the sensor stops working.
Table 4: Troubleshooting
LED/fault pattern Cause Measures
Yellow LED does not light up
even though the light beam is
aligned to the object and the
object is within the set sensing
range
No voltage or voltage below
the limit values
Check the power supply,
check all electrical connec‐
tions (cables and plug connec‐
tions)
Voltage interruptions Ensure there is a stable power
supply without interruptions
Sensor is faulty If the power supply is OK,
replace the sensor
Green LED flashes IO-Link communication -
Digital outputs not according to
graphic
IO-Link communication -
Digital outputs not according to
graphic
Parameter settings made
manually, which deviate from
the standard
Initiate a factory reset. The
digital outputs are reset to
factory settings.
Yellow LED flashes Sensor is still ready for oper‐
ation, but the operating condi‐
tions are not ideal
Check the operating condi‐
tions: Fully align the beam
of light (light spot) with the
background. / Clean the opti‐
cal surfaces . / Check sens‐
ing range and adjust if nec‐
essary. / Check the character‐
istics of the background in
accordance with the specifica‐
tions.
Yellow LED lights up, although
an object is in the path of the
beam.
Distance between the sensor
and the object is too long or
sensing range is set too short
Increase the sensing range
Yellow LED does not light up,
no object in the path of the
beam
The sensing range distance is
too large
Reduce the sensing range,
see teach-in
8 Disassembly and disposal
The sensor must be disposed of in line with applicable country-specific regulations.
When disposing of them, you should try to recycle them (especially the precious met‐
als).
OPERATING INSTRUCTIONS
38
O P E R A T I N G I N S T R U C T I O N S | WTF12L/WTF12V 8027710/2022-04-12 | SICK
Subject to change without notice
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