SICK WTB9M4-3 Manual De Operación página 6

8 Disassembly and disposal
9 Maintenance
8017515 | SICK
Subject to change without notice
LED indicator/fault pattern /
LED indicator/fault pattern
Green LED does not light up /
Green LED does not light up
Green LED does not light up /
Green LED does not light up
Yellow LED flashes /
Yellow LED flashes
Yellow LED lights up, no object
in the path of the beam /
Yellow LED lights up, no object
in the path of the beam
Object is in the path of the be‐
am, yellow LED does not light
up /
Object is in the path of the be‐
am, yellow LED does not light
up
The sensor must be disposed of according to the applicable country-specific regulati‐
ons. Efforts should be made during the disposal process to recycle the constituent ma‐
terials (particularly precious metals).
SICK sensors are maintenance-free.
We recommend doing the following regularly:
• Clean the external lens surfaces
• Check the screw connections and plug-in connections
No modifications may be made to devices.
Subject to change without notice. Specified product properties and technical data are
not written guarantees.
DISASSEMBLY AND DISPOSAL
Cause /
Cause
Voltage interruptions /
Voltage interruptions
Sensor is faulty /
Sensor is faulty
Sensor is still ready for opera‐
tion, but the operating conditi‐
ons are not ideal /
Sensor is still ready for opera‐
tion, but the operating conditi‐
ons are not ideal
/ Distance between the sen‐
sor and the background is too
short /
/ Distance between the sen‐
sor and the background is too
short
Distance between the sensor
and the object is too long or
sensing range is set too
short /
Distance between the sensor
and the object is too long or
sensing range is set too short
Measures /
Measures
Ensure there is a stable power
supply without interruptions /
Ensure there is a stable power
supply without interruptions
If the power supply is OK, re‐
place the sensor /
If the power supply is OK, re‐
place the sensor
Check the operating conditi‐
ons: Fully align the beam of
light (light spot) with the ob‐
ject. / Clean the optical surfa‐
ces . / Readjust the sensitivity
(potentiometer) / Check sen‐
sing range and adjust if ne‐
cessary; see graphic F. /
Check the operating conditi‐
ons: Fully align the beam of
light (light spot) with the ob‐
ject. / Clean the optical surfa‐
ces . / Readjust the sensitivity
(potentiometer) / Check sen‐
sing range and adjust if ne‐
cessary; see graphic F.
Reduce the sensing range,
see graphic F /
Reduce the sensing range,
see graphic F
Increase the sensing range,
see graphic F /
Increase the sensing range,
see graphic F
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