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SICK WTB27-3F2641 Overview

Photoelectric proximity switch WTB27-3F2641 red light, PNP, rectangular plug, 6 pins, time delay

SICK WTB27-3F2641 Description

  • Precise background suppression with no scanning distance drift
  • PinPoint technology: light-intensive red emitter LED with homogenous light spot
  • Reliable operation in industrial environments - with ambient light, optical reflections and when devices are mounted opposite one another
  • Scanning distance setting with potentiometer or easy teach-in
  • Operating temperature: -40 C +60 C
  • UL approval
  • Your benefits

  • Very precise detection with no scanning distance drift in case of vibrations
  • PinPoint technology can replace laser photoelectric proximity sensors in some applications, eliminating the need for laser safety measures, and the service life of the PinPoint LED is double that of conventional laser diodes
  • Less downtime due to ASIC chip technology by SICK
  • Reliable in operation with ambient light, optical reflections, and when devices are mounted opposite one another
  • Reduces setup costs e.g. in case of format adjustment by IO-Link sensor communication interface
  • Highly stable housing due to offset fixing holes
  • For use at temperatures as low as 40 C

Dimensions (W x H x D)::24.6 mm x 80.6 mm x 54 mm
Sensing range max.: 30 mm ... 1,100 mm
Sensing range: 100 mm ... 1,100 mm
Light source:LED 2)
Type of light:visible red light
Wave length:660 nm
Light spot diameter (distance):15 mm (500 mm)
Delay time:adjustable via time delay selector switch: 0.02 ... 0.5 s
0.5 ... 10 s
Adjustment of operating distance:Potentiometer
Time type:Switch on delay
time delay off
switch on delay and time delay off
1) Object with 90 % reflectance (referred to standard white DIN 5033) 2) Average service life 100,000 h at Ta = +25 C
Enclosure rating:IP 65
Supply voltage:10 V DC ... 30 V DC 1)
Residual ripple:≤ 5 Vpp 2)
Power consumption:≤ 35 mA 3)
Switching output:PNP, light/dark-switching, Complementary
Output current Imax.:≤ 100 mA
Response time:≤ 1.5 ms 4)
Switching frequency:350 Hz with light/dark ratio 1:1
Connection type:connector Q6, 6-pin, DC-coding
Number of cores:6
Protection class:


Circuit protection:A
C 6) 7) 8)
Weight:100 g
Housing material:ABS
Optics material:PMMA
Ambient temperature, operation:-40 C ... 60 C
Ambient temperature, storage:-40 C ... 75 C
Test input sender off:TE to 0 V
Signal voltage PNP HIGH / LOW:approx. VS - 2.5 V / 0 V
1) Limit values, operation in short-circuit protected network max. 8 A 2) May not exceed or fall short of VS 3) Without load 4) Signal transit time with resistive load 5) Reference voltage 50 V DC 6) A = VS connections reverse-polarity protected 7) B = inputs and output reverse-polarity protected 8) C = interference suppression

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