92 SENSICK CATALOGUE
WLL 160 T Photoelectric fibre-optic switches, teach-in
WLL 160 T TEACH-IN functions
■BUZZER
For acoustic support. Short tone
after TEACH-IN = O.K.
Long tone after TEACH-IN = error
or application not suitable.
Indicator for correct
fibre-optic cable
mounting.
■Off-delay TOFF
For switching output Q. Optional
connection, 40 ms fixed. To ensure
that your control can also detect
shorter events.
■Response time/
switching speed
NORM: 830 Hz; max. system scanning
distance.
HI: 1660 Hz, system scanning distance
70 %. Select before TEACH-IN!
■TEACH-IN button
Sensitivity setting at the push of a
button. No special knowledge of
phototelectric switches required.
Only active if MODE selector switch
is set to SET pos. (manipulation
protection).
■Selector switch
switching output Q
L.ON: light-switching
D.ON: dark-switching optionally
in PNP or NPN.
■Connection technique
Optionally M 8 plug,
4-pin (no alarm output) or 5-wire
connecting cable.
■Alarm output
■TEACH-IN mode: signals
TEACH-IN error.
■Sensor mode (RUN): signals
insufficient signal reserve, e.g., due
to contamination or misalignment
(not with plug version M8 – 4-pin).
■WLL 160T
Assembly technology
Assembly and disassembly on
top hat profile rail mounting by
pulling the locking device.
■TEACH-IN
mode selector switch
Separate from operating mode
functions, and consequently simple
and comprehensible handling;
no dual functions.
■MAX: Maximum scanning range
set permanently. Caution: switching
speed independent of operating
mode selection; switching speed
always 830 Hz.
■SET: WLL 160T in manual TEACH-
IN mode. Optimum switching point
setting at the simple push of a
button (1 or 2 times).
■RUN: optionally
– TEACH-IN manual: The taught-in
switching threshold and hysteresis
are stored in EEPROM.
The WLL 160 T operates in sensor
mode after 2 s.
– External TEACH-IN (ET):
Optimum system adjustment using
external control signal. Ideal if the
WLL 160T is not accessible or
part changes are often aligned
automatically.
■Fibre-optic cable lock
Press down bracket: fibre-optic
cables are locked. Press the lug:
fibre-optic cables are released.
■Fibre-optic cable
attachment
n
Transmitter fibre-optic cable
mReceiver fibre-optic cable
Suitable fibre-optic cable: plastic
fibre-optic cables of the LL 3
series (see the description of the
LL 3 variants).
■LED display red, green
■TEACH-IN mode:
Signalization TEACH-IN process.
Permanently blinking: TEACH-IN error.
Permanently lit: TEACH-IN o.K.
■Sensor operation:
LED red: switching threshold exceeded
LED
green: received signal > 1.1 or < 0.9
External TEACH-IN signal ET
■Mounting technique
Simple snap-on on top hat profile
rails. Mounting bracket supplied
with equipment.
■µ-processor technique
with EEPROM
Permanent storage of taught-in
switching threshold and hysteresis,
even when there are longer inter-
ruptions of voltage.