SICK WLA16P, Operating Instructions Manual

Page: 24 / 162

Table 11: Push-pull, PNP, NPN
Push-pull
PNP
NPN
+ (L+)
Q ≤ 100 mA
‒ (M)
Push-pull
PNP
NPN
+ (L+)
Q ≤ 100 mA
‒ (M)
Push-pull
PNP
NPN
+ (L+)
Q
≤ 100 mA
‒ (M)
Push-pull
PNP
NPN
+ (L+)
Q
≤ 100 mA
‒ (M)
6 Additional functions
Alarm
Alarm output: The sensor (WLA16) features a pre-failure notification output (“Alarm” in
connection diagram [
see table 2 ]), which issues a notification if the sensor is only ready
for operation to a limited extent. The LED flashes in this case. Possible causes: Sensor
is contaminated, sensor is out of alignment. In the good state: LOW (0), if excessively
contaminated HIGH (1).
Health output: The sensor (WLA16) features a pre-failure notification output (“Health”
in connection diagram [
see table 2 ]), which issues a notification if the sensor is only
ready for operation to a limited extent or the cable has been interrupted. Possible
causes: Sensor or reflector is contaminated, sensor is out of alignment, cable is dam‐
aged. In the good state: HIGH (1), if excessively contaminated or in the event of cable
interruption LOW (0). The yellow LED indicator flashes in this case.
6
ADDITIONAL FUNCTIONS
24 O P E R A T I N G I N S T R U C T I O N S | WLA16 8020348.1DS6/2021-11-24 | SICK
Subject to change without notice
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