SICK GRL18 Manual De Instrucciones página 22

OPERATING INSTRUCTION
5 Troubleshooting
Table Fault diagnosis
en
6 Disassembly and disposal
22 O P E R A T I N G I N S T R U C T I O N | GRL18
The Troubleshooting table indicates measures to be taken if the sensor stops working.
LED/fault pattern
Green LED does not light up
Green LED does not light up
Green LED does not light up
Yellow LED flashes
Signal interruptions when
object is detected
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).
Cause
No voltage or voltage below
the limit values
Voltage interruptions
Sensor is faulty
Sensor is still ready for oper‐
ation, but the operating condi‐
tions are not ideal
Depolarizing property of the
object surface (e.g., tape),
reflection
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 the operating condi‐
tions: Fully align the beam
of light (light spot) with the
reflector. / Clean the optical
surfaces (sensor and reflec‐
tor). / Readjust the sensitivity
(potentiometer) / If the poten‐
tiometer is set to the max.
sensing range: Reduce the
distance between the sensor
and the reflector, and check
the reflector type / Reflector
is not suitable for the appli‐
cation in question (we recom‐
mend only using SICK reflec‐
tors) / Check sensing range
and adjust if necessary, see
"Check the application condi‐
tions", page 18. / Distance
between the sensor and the
reflector is too long
Reduce sensitivity or change
the position of the sensor
8016955.1HT2/2022-11-11 | SICK
Subject to change without notice