6
ADDITIONAL FUNCTIONS
en
6
Additional functions
18
O P E R A T I N G I N S T R U C T I O N S | WLD26
Table 8: DC
WLD
26x-
Push-
111
112
113
pull
PNP
811
812
813
BN
WH
Q
Alarm
Q
BU
BK
Q
Q
GY
-
-
Table 9: Push-pull, PNP, NPN
PNP
Push-pull
NPN
PNP
Push-pull
NPN
Alarm
Alarm output: The sensor (WLD26) features a pre-failure notification output ("Alarm" in
the connection diagram
[see table
ready for operation to a limited extent. The LED 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
xxXXXxxxZZZ
114
115
116
814
815
816
+ (L+)
Health
Alarm
Health
- (M)
Q
Q
Q
Q
-
-
-
-
+ (L+)
Q ≤ 100 mA
Push-pull
‒ (M)
+ (L+)
Q ≤ 100 mA
Push-pull
‒ (M)
2]), which issues a notification if the sensor is only
421
422
721
722
B21
B22
-
-
Q
Q
Q
Q
Q
Q
Q
Q
Test →
Test →
Test →
Test →
L+
L+
M
M
+ (L+)
PNP
Q ≤ 100 mA
NPN
‒ (M)
+ (L+)
PNP
Q ≤ 100 mA
NPN
‒ (M)
8020356.1DS8/2021-11-24 | SICK
Subject to change without notice