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Rectangular plastic sensor housing with cable connector and potentiometer adjustment

Sick

Sick WTB27-3P3741 Photoelectric Proximity Sensor PNP

SKU CH-Z7BF-EMVB6

Photoelectric proximity sensor with background suppression, 100 mm to 1,100 mm sensing range, visible red LED, PNP complementary output, 350 Hz switching frequency, IP66/IP67 enclosure.

  • Background suppression enables reliable detection up to 1,100 mm
  • Visible red LED at 660 nm provides clear spot at 500 mm
  • PNP complementary output switches at 350 Hz with 1.5 ms response
  • IP66 and IP67 rated housing withstands –40 °C to +60 °C operation
  • 10–30 V DC supply with 35 mA consumption and 100 mA output current

SICK WTB27-3P3741 photoelectric sensor

The SICK WTB27-3P3741 is a photoelectric proximity sensor with background suppression for industrial detection tasks. It operates on 10 V DC to 30 V DC supply voltage and provides a PNP complementary switching output. The rectangular plastic housing measures 24.6 mm by 80.6 mm by 54 mm and weighs 120 g. It is rated IP66 and IP67 for harsh environments.

Potentiometer adjustment and Q7 cable connection

Sensitivity is set via a potentiometer on the housing for precise range definition. The sensor connects through a 150 mm PVC cable terminated with a 7-pin Q7 connector using DC coding. Circuit protection includes safeguards labelled A, B and C, plus protection class II insulation. Visible red LED light at 660 nm wavelength produces a 15 mm light spot at 500 mm distance.

100 mm to 1100 mm sensing range

The defined sensing range spans 100 mm to 1100 mm with a maximum reach of 30 mm to 1100 mm. Response time is 1.5 ms, yielding a 350 Hz switching frequency for fast automation cycles. Output current is limited to 100 mA with signal voltage approximately VS minus 2.5 V for HIGH and 0 V for LOW. Operating temperature covers minus 40 °C to plus 60 °C. Not suited for applications requiring longer range or analogue output.

Highlights

  • Background suppression enables reliable detection up to 1,100 mm
  • Visible red LED at 660 nm provides clear spot at 500 mm
  • PNP complementary output switches at 350 Hz with 1.5 ms response
  • IP66 and IP67 rated housing withstands –40 °C to +60 °C operation
  • 10–30 V DC supply with 35 mA consumption and 100 mA output current

Specifications

BrandSICK
ModelSICK WTB27-3P3741

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