OPERATING INSTRUCTIONS
en
7.1
Troubleshooting integrated IO-Link devices
8
Maintenance
36
O P E R A T I N G I N S T R U C T I O N S | WTF4S
Table 9: Troubleshooting
LED/fault pattern
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
Green LED flashes
Digital outputs not according to
graphic
Digital outputs not according to
graphic
Yellow LED flashes
Yellow LED flashes (only briefly) Teach-in mode
Notes on malfunctions can be found in the service data.
Details of the available service data can be found in the detailed IO-Link description:
Technical Information: Photoelectric sensors, SICK Smart Sensors /
This SICK sensor is maintenance-free.
We do, however, recommend that the following activities are undertaken regularly:
•
Clean the optical interfaces and housing
•
Check the fittings and plug connectors
Cleaning
NOTICE
Equipment damage due to improper cleaning.
Improper cleaning may result in equipment damage.
Only use recommended cleaning agents and tools.
■
Never use sharp objects for cleaning.
■
Clean the optical surfaces at regular intervals and, in the event of contamination,
►
with a lint-free lens cloth (part number 4003353). The cleaning interval essentially
depends on the ambient conditions.
No modifications may be made to devices.
Subject to change without notice. Specified product properties and technical data are
not written guarantees.
Cause
No voltage or voltage below
the limit values
Voltage interruptions
Sensor is faulty
IO-Link communication
IO-Link communication
Parameter settings made
manually, which deviate from
the standard
Sensor is still ready for oper‐
ation, 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
-
-
Initiate a factory reset. The
digital outputs are reset to
factory settings.
Check the operating condi‐
tions: Fully align the beam
of light (light spot) with the
background. / Clean the opti‐
cal surfaces . / Check sensing
range and adjust if necessary.
Check the teach-in mode
IO-Link.
8028214/2023/10/20 | SICK
Subject to change without notice
