SICK HTE18 Series, Operating Instructions Manual

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Sensor with potentiometer (with IO Link):
The sensing range is adjusted relative to the background with the potentiometer (type:
270°).
Clockwise rotation: to teach mode; counterclockwise rotation: to run mode. Turn the
potentiometer clockwise to teach mode until yellow LED begins blinking. Set object
at desired sensing range. Turn the potentiometer counterclockwise to run mode until
yellow LED stops blinking. The yellow LED should remain lit. Remove the object from
light beam, LED will turn off.
0 %
100 %
0 %
100 %
0 %
100 %
0 %
100 %
0 %
100 %
0 %
100 %
0 %
100 %
0 %
100 %
Sensing range min. Sensing range max. Set switching point
Figure 5: Signal strength light bar during adjustment
The optimum setting can be achieved and checked using the signal strength light bar
on the back of the sensor. The LEDs on the signal strength light bar light up in relation
to the object position and the set switching point. If no LEDs or only the red LEDs
light up, the object is positioned in front of the set switching point and cannot be
detected. The first yellow LED lights up when the object is behind the set switching
point. More green LEDs light up when the object is moved further away from the sensor
into the background (
see figure 5 ). The sensor is adjusted and ready for operation.
Refer to graphics see table 1, page 7 to check the function. If the switching output fails
to behave in accordance the graphic, check application conditions. See section Fault
diagnosis.
Please refer to the enclosed operating instructions for the IO-Link photoelectric sensor
for information about adjusting the IO-Link sensing range.
The sensor is adjusted and ready for operation.
7.4 Additional functions
Alarm / Health output
The sensor (HTE18) features a pre-failure notification output (“Q2” in connection dia‐
gram [B], if the alarm option is selected), which issues a notification if the signal
strength of the light being received is not sufficient. Possible causes: Sensor is conta‐
minated, sensor is out of alignment. In the good state: LOW (U
V
< V); if excessively
contaminated: HIGH (>+U
V
- V). The LED indicator flashes in this case.
Health output: The sensor (HTE18) features a health status notification output (“Q2” in
connection diagram [B], if the health option is selected), which issues a notification if
the signal strength of the light being received is sufficient. Possible causes, if the signal
strength is not sufficient: Sensors are contaminated, sensors are out of alignment, or
cable is damaged. In the good state: HIGH (>+U
V
- V); if excessively contaminated or in
the event of cable interruption: LOW (U
V
< V). The LED indicator flashes in this case.
7
COMMISSIONING
18
8017851.1A15 / 2020-12-14 | SICK
Subject to change without notice