Fault Diagnosis - SICK SureSense HSE18 Manual De Operación

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Fault diagnosis

7 Table Fault diagnosis
8017854 | SICK
Subject to change without notice
dark switching
1
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 HSE18 sensor features a test input ("TE" or "Test" on the connection dia‐
gram [B]), which can be used to check that the sensor is functioning correctly: If female
cable connectors with LED indicators are used, you must ensure that the TE is assigned
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.
Table indicates which measures are to be taken if the sensor stops working.
LED indicator/fault pattern /
LED indicator/fault pattern
Green LED does not light up /
Green LED does not light up
Green LED does not light up /
Green LED does not light up
Green LED does not light up /
Green LED does not light up
Green LED lights up, no output
signal when object is detec‐
ted /
Green LED lights up, no output
signal when object is detected
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 /
light switching
2
Cause /
Cause
No voltage or voltage below
the limit values /
No voltage or voltage below
the limit values
Voltage interruptions /
Voltage interruptions
Sensor is faulty /
Sensor is faulty
Test input (TI) is not connec‐
ted properly /
Test input (TI) is not connec‐
ted properly
Sensor is still ready for opera‐
tion, but the operating conditi‐
ons are not ideal/additionally
with health output: power sup‐
ply interrupted /
FAULT DIAGNOSIS
t = 2
Measures /
Measures
Check the power supply,
check all electrical connecti‐
ons (cables and plug connecti‐
ons) /
Check the power supply,
check all electrical connecti‐
ons (cables and plug connecti‐
ons)
Ensure there is a stable power
supply without interruptions /
Ensure there is a stable power
supply without interruptions
If the power supply is OK, re‐
place the sensor /
If the power supply is OK, re‐
place the sensor
See the note on connecting
the TI /
See the note on connecting
the TI
Check the operating conditi‐
ons: Fully align the beam of
light (light spot) with the recei‐
ver. / Clean the optical surfa‐
ces . / Readjust the sensitivity
(potentiometer) / If the poten‐
tiometer is set to the max.
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