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5.1
Notes on UL approval
8027380.1N1Y/2024-03-11 | SICK
Subject to change without notice
Table 2: Electrical connection
WLF4Fx-
x4
1 = BN
4
3
2 = WH
3 = BU
4 = BK
1
2
Table 3: DC
WLF4Fx-
1 = BN
2 = WH
3 = BU
4 = BK
Table 4: DC
WLF4Fx-
1 = BN
3 = BU
4 = BK
Table 5: Push-pull, PNP, NPN
PNP
Push-pull
NPN
PNP
Push-pull
NPN
The device shall be supplied from an isolating transformer having a secondary overcur‐
rent protective device that complies with UL 248 to be installed in the field rated either:
x2
xH
3
1
0.14 mm
2
4
2
AWG26
xx112xA0Zxx
Q
Q
xx312xA0Zxx
Q
+ (L+)
Q ≤ 100 mA
Push-pull
‒ (M)
+ (L+)
Q ≤ 100 mA
Push-pull
‒ (M)
O P E R A T I N G I N S T R U C T I O N S | WLF4F
OPERATING INSTRUCTIONS
x1
-xG
3
1
0.14 mm
AWG26
4
xx111xA0Zxx
+ (L+)
Q
- (M)
Q
xx311xA0Zxx
+ (L+)
- (M)
Q
+ (L+)
PNP
Q ≤ 100 mA
NPN
‒ (M)
+ (L+)
PNP
Q ≤ 100 mA
NPN
‒ (M)
2
en
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