LED indicator/fault pattern Cause Measures
Yellow LED flashes; if Health is
present then take note of the
corresponding output signal; if
Alarm is present then take note
of the corresponding output
signal
Sensor is still ready for opera‐
tion, but the operating condi‐
tions are not ideal/addition‐
ally with health output: power
supply interrupted
Check the operating condi‐
tions: Fully align the beam of
light (light spot) with the
object / Clean the optical sur‐
faces / Check sensing range
and adjust if necessary, see
figures in chapter 7 / With
health output: Check the volt‐
age supply, check all electrical
connections (cables and plug
connections).
Yellow LED lights up, no object
in the path of the beam
The sensing range distance is
too large
Reduce the sensing range,
see figures in chapter 7.
Object is in the path of the
beam, yellow LED does not
light up
Distance between the sensor
and the object is too long or
sensing range is set too short
Increase the sensing range,
see figures in chapter 7.
9 Disassembly and disposal
The sensor must be disposed of according to the applicable country-specific regula‐
tions. Efforts should be made during the disposal process to recycle the constituent
materials (particularly precious metals).
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, indi‐
cates that a product is subject to these regulations.
10 Maintenance
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.
11 Technical data
HTB18 HTB18-
xxxxxxD02
HTB-xxxxxxD04 HTB18-M / -L /-
U
HTB18L
Laser class 1
9 DISASSEMBLY AND DISPOSAL
20
8017850.16K9 | SICK
Subject to change without notice