Energie E
SP
Signalwechsel1
SP
Signalwechsel2
HIGH
LOW
LOW
HIGH
Zeit
Hysterese
(positiv)
HIGH Signal
bei Objekt anwesend
LOW Signal
bei Objekt anwesend
1
2
Figure 19: Through-beam detection mode
1 Through-beam
Output signal not inverted (“dark switching”)
2 Through-beam
Output signal inverted (“light switching”)
NOTE
If “Detection mode = Through-beam” is selected, an object moving into the beam triggers a switching signal
change at SP
SignalChangel2
and an object moving out of the beam triggers a switching signal change at SP
Signalchange1
.
8.12.4 Analog channel QA
The following teach-in procedures are available for assigning the received light values to the current or voltage
range:
•
Analog 2-point teach-in
•
Analog dynamic teach-in
NOTE
WLL80 is a fiber optic amplifier that can be used both as a through-beam photoelectric sensor and as a photoelec‐
tric proximity sensor (depending on the principle of operation of the fibers used). When performing a teach-in,
different procedures may be required depending on the principle of operation.
NOTE
Briefly pressing the TEACH pushbutton cancels the teach-in procedure (Escape).
8 OPERATION
60
O P E R A T I N G I N S T R U C T I O N S | WLL80 Analog 8027947 /2022-12-14 | SICK
Subject to change without notice
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