Image: G
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Additional functions
Alarm output: The sensor (HSE18L) 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
is contaminated, sensor is out of alignment. In the good state: LOW (U
V
< V); if excessi‐
vely contaminated: HIGH (>+U
V
- V). The LED indicator flashes in this case.
Health output: The sensor (HSE18L) 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.
Time types: HSE18L with optional On-delay or Off-Delay adjustment: t0 = no time delay,
t1 = time delay when object is detected, t2 = time delay when no object is detected.
The time setting can be selected using the potentiometer according to A.
dark switching
light switching
2
1
t = 1
1
2
t = 2
Timer stages can be set from 0 to 2 seconds.
Light/dark switch: The sensor is in light switching mode when optional light/dark poten‐
tiometer is rotated to the “L” position. The sensor is in dark switching mode when optio‐
nal light/dark potentiometer is rotated to the “D” position. The green power supply LED
will flash once when the mode is changed.
Test input: The HSE18L sensor features a test input ("TE" or "Test" on the connection
diagram [B]), which can be used to check that the sensor is functioning correctly: If fe‐
male cable connectors with LED indicators are used, you must ensure that the TE is as‐
signed accordingly.
There must be no object between the sender and receiver; activate the test input (see
the connection diagram [B], TE at 0 V). The send LED is shut down or the detection of
an object is simulated. 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.
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8017857.YMH6 | SICK
Subject to change without notice
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