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Additional functions
Alarm output: WTF18-3Vxxx sensors feature a pre-failure notification output (“Alarm” in
connection diagram [B]), which issues a notification if the sensor is only ready for ope‐
ration to a limited extent. Possible causes: Sensor is contaminated, sensor is out of
alignment. In the good state: LOW (U
V
< V); if excessively contaminated: HIGH (>+U
V
- V).
The LED indicator flashes in this case.
Health output: WT18-3P420S22, WT18-3P420S32 sensors feature a pre-failure notifi‐
cation output ("Health" in connection diagram [B]), which issues a notification if the
sensor is only ready for operation to a limited extent or the cable has been interrupted.
Possible causes: Sensors are contaminated, sensors are out of alignment, cable is da‐
maged. In the good state: HIGH (>+U
V
- V); if excessively contaminated or in the event of
cable interruption: LOW (U
V
< V). The LED indicator flashes in this case.
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Devices with special features
WT18-3A600S02: sensing range is preset: see data sheet, switching frequency:
1000Hz , pin assignment: pin 1 = L+, pin 2 = M, Pin 3 = not connected, Pin 4 = not
connected, Pin 5 = push-pull-output (PNP: Q, NPN: Q/), Pin 6 = not connected
WT18-3N110S03: Connection of 1,200 mm cable and AMP male connector (brown: L+,
blue: M, black: Q, white: Q/), potentiometer for setting is sealed, sensing range is pre‐
set: see data sheet
WT18-3P120S06: sensing range: 850 mm / 90%, switching frequency: 400 Hz
WT18-3P411S07, WT18-3P430S40: Sensing range is preset, see data sheet
WT18-3P420S09 / WT18-3P420S12: sensing range: 50 to 700 mm / 90%
WT18-3P420S10: switching frequency: 1,500 Hz
WT18-3P420S05 / WT18-3P421S36: sensing range: 50 to 850 mm / 6%, switching
frequency: 400 Hz
WT18-3P430S19: sensing range: 50 to 500 mm / 6%, switching frequency: 350 Hz
WT18-3P120S20, WT18-3P420S25: Sensing range 50 … 850 mm / 6%, switching fre‐
quency 200 Hz
WT18-3P420S21: Sensing range 50 … 400 mm / 90%, switching frequency 1,500 Hz
WT18-3P420S22: pin assignment: pin 1 = L+, pin 2 = Health, pin 3 = M, pin 4 = Q
(light switching)
WT18-3P430S29, WT18-3P610S30: For extreme shock loads
WT18-3P420S31: Sensing range is preset, see data sheet. Detection of objects has be‐
come very restricted in the range 0 ... 20 mm
WT18-3P420S32: sensing range is pre-set: 1,000 mm / 90%, without potentiometer,
pin assignment: pin 1 = L+, pin 2 = Health, pin 3 = M, pin 4 = Q (light switching)
WT18-3P930S34: Sensing range 50 … 60 mm / 90%, switching frequency 300 Hz
WT18-3P020S35: 2,000 mm cable with M8 male connector, 4-pin, pin 1: L+, pin 2: Q/,
pin 3: M, pin 4: Q
WT18-3P421S36: Sensing range 50 … 850 mm / 6%, switching frequency 400 Hz
WT18-3P010S37: 100 mm cable with M12 male connector, 4-pin, pin 1: L+, pin 2: Q/,
pin 3: M, pin 4: Q
ADDITIONAL FUNCTIONS
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8010586.YM42 | SICK
Subject to change without notice
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