SICK WLD26, Operating Instructions Manual

Page: 7 / 101

Table 3: Push / pull
Q
Push-pull
( ≤ 100 mA)
+ (L+)
Q
‒ (M)
+ (L+)
Q
‒ (M)
Q
Push-pull
( ≤ 100 mA)
+ (L+)
Q
‒ (M)
+ (L+)
Q
‒ (M)
6 Additional functions
Alarm
Alarm output: The sensor (WLD26) features a pre-failure notification output (“Alarm” in
connection diagram [
table 4 ]), which issues a notification if the sensor is only ready for
operation to a limited extent. The LED indicator flashes in this case. Possible causes:
Sensor or reflector is contaminated, sensor is out of alignment. In the good state: LOW
(0), if excessively contaminated HIGH (1).
Health
Health output: The sensor (WLD26) features a pre-failure notification output (“Health”
in connection diagram [
table 4 ]), 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 damaged. In
the good state: HIGH (1), if excessively contaminated or in the event of cable interrup‐
tion LOW (0). The yellow LED indicator flashes in this case.
6
ADDITIONAL FUNCTIONS
6
8020356.14CS | SICK
Subject to change without notice