SICK WLA16P, Operating Instructions Manual

Page: 25 / 162

Table 12: Alarm / Health
Alarm ( ≤ 100 mA) Health ( ≤ 100 mA)
+ (L+)
Alarm
‒ (M)
+ (L+)
Health
‒ (M)
+ (L+)
Alarm
‒ (M)
+ (L+)
Health
‒ (M)
Test input
Test input: The sensors WLA16 feature a test input (“TI” or “Test” on the connection
diagram [
table 2 ], which can be used to switch the sender off and, therefore, check that
the sensor is functioning correctly: If female cable connectors with LED indicators are
used, you have to ensure that the TI is assigned accordingly.
It is important that there is no object between the sensor and reflector; activate the test
input (see the connection diagram [
table 2 ].
The send LED is shut down or the detection of an object is simulated. Refer to table 6
to check the function. If the switching output fails to behave in accordance with the
graphic, check the application conditions.
see „Troubleshooting“, page 30 .
Table 13: Test
Test → M Test → L+
+ (L+)
Test
– (M)
+ (L+)
Test
– (M)
+ (L+)
Test
– (M)
+ (L+)
Test
– (M)
7 Commissioning
7.1 Alignment
Align the sensor with a suitable reflector. Select the position so that the red emitted
light beam hits the center of the reflector. The sensor must have a clear view of the
reflector, with no object in the path of the beam [
see figure 14 ]. You must ensure that
the optical openings of the sensor and reflector are completely clear.
ADDITIONAL FUNCTIONS
6
8020348.1DS6/2021-11-24 | SICK O P E R A T I N G I N S T R U C T I O N S | WLA16 25
Subject to change without notice
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