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Additional Functions - SICK SureSense HL18L Betriebsanleitung

Cylindrical photoelectric sensors
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Additional functions

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The sensitivity is adjusted with the potentiometer (type: 270°). Clockwise rotation:
operating reserve increased; counterclockwise rotation: operating reserve reduced.
We recommend setting the potentiometer to "Maximum". A lower operating reserve
may be necessary for depolarizing surfaces, very small objects, or translucent ob‐
jects.
The sensor is adjusted and ready for operation. Refer to graphics C and G to check
the function. If the switching output fails to behave in accordance with graphic C,
check application conditions. See section Fault diagnosis.
Image: C
Image: G
Alarm output: The sensor (HL18L) features a pre-failure notification output ("Q2" in
connection diagram [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
or reflector is contaminated, sensor is out of alignment. In the good state: LOW (U
if excessively contaminated: HIGH (>+U
Health output: The sensor (HL18L) 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
- V). The LED indicator flashes in this case.
V
< V);
V
8017856.YMH6 | SICK Subject
to change without notice

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