7
Troubleshooting
8
Disassembly and disposal
9
Maintenance
8021945.1HW1 /2022-11-14 | SICK
Subject to change without notice
4
Operation with marginal light reception
The sensor will provide a pre-failure notification by flashing the orange LED indicator when
operating with marginal light reception. This may be the result of incorrect alignment or
contaminated optical surface(s). The sensor may be equipped with a Health or Alarm
output, which provide a discrete signal when the sensor is operating in the marginal
condition. Refer to
table 3
The Troubleshooting table indicates measures to be taken if the sensor stops working.
Table 6: Troubleshooting
LED indicator/fault pattern
Yellow LED does not light up
even though the sender is
aligned to the receiver 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 /
Health is present then take
note of the corresponding out‐
put signal
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).
NOTE
Disposal of batteries, electric and electronic devices
•
According to international directives, batteries, accumulators and electrical or
electronic devices must not be disposed of in general waste.
•
The owner is obliged by law to return this devices at the end of their life to the
respective public collection points.
•
WEEE:
This symbol on the product, its package or in this document,
indicates that a product is subject to these regulations.
SICK recommends the following regular maintenance:
for additional detail on Health/Alarm output operation.
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 oper‐
ation, but the operating condi‐
tions are not ideal
O P E R A T I N G I N S T R U C T I O N | ZSE18
OPERATING INSTRUCTION
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 the operating condi‐
tions: Fully align the sender
and receiver / Clean the opti‐
cal surfaces
en
33