SICK WTB11-2P2461 W11-2 Photoelectric Proximity Sensor PNP 1.1m

SICK WTB11‑2P2461 is a compact photoelectric proximity sensor from the W11‑2 series with background suppression for reliable detection independent of background colour. Its PinPoint LED technology creates a bright, small and precise light spot for easy sensor alignment. Advanced detection algorithms combined with IP66, IP67 and IP69K enclosure rating ensure reliable object detection in harsh industrial environments such as material handling and packaging systems.

Applications:

• High‑speed conveyor object presence and positioning

• Packaging machinery for product counting and sorting

• Material handling and logistics automation

• Automated assembly line part detection

• General factory automation in demanding environments

Core Specifications:

• Functional principle: Photoelectric proximity sensor, background suppression

• Sensing range max.: 30 mm … 1,100 mm (90% reflectance)

• Sensing range: 30 mm … 800 mm (90% reflectance)

• Light source: PinPoint LED, visible red light (λ = 660 nm)

• Light spot size: Ø 6 mm at 200 mm

• Supply voltage: 10 V DC … 30 V DC

• Switching output: PNP complementary (light/dark switching selectable)

• Output current: ≤ 100 mA

• No‑load current consumption: ≤ 30 mA

• Response time: ≤ 2.5 ms

• Switching frequency: 200 Hz

• Adjustment: Potentiometer, 5 turns

• Connection type: M12 male connector, 4‑pin

• Enclosure rating: IP66 / IP67 / IP69K

• Housing material: ABS plastic

• Optics material: PMMA

• Housing design: Rectangular, square beam outlet

• Dimensions (W × H × D): 15.6 mm × 48.5 mm × 42 mm

• Weight: approx. 55 g

• Circuit protection: A (VS reverse‑polarity), B (inputs/output reverse‑polarity), C (interference suppression), D (output overcurrent and short‑circuit)

• Protection class: III

• Ambient operating temperature: –30 °C … +60 °C

• Storage temperature: –40 °C … +75 °C

• UL File No.: NRKH.E181493 & NRKH7.E181493

• RoHS compliant

Accessory Compatibility:

• BEF‑AP‑W12 – Mounting bracket for W11‑2 / W12‑3 series, dovetail mount, anodised aluminium

• YF2A14‑020VB3XLEAX – M12 straight female connector cable, 4‑pin, 2 m, PVC, A‑coded

• YG2A14‑020VB3XLEAX – M12 angled female connector cable, 4‑pin, 2 m, PVC, A‑coded

• STE‑1204‑G – M12 straight male connector cable, 4‑pin, 2 m, PVC

System Integration:

• Belongs to SICK W11‑2 series of compact photoelectric sensors.

• Mounts via three through‑holes reinforced with metal sleeves or dovetail slot, compatible with a wide range of SICK bracket systems.

• M12 4‑pin male connector mates with standard industrial M12 female cables; wiring details available in product manual.

• Select light‑on or dark‑on mode via L/D selector; adjust sensing threshold by turning the 5‑turn potentiometer.

• Yellow output LED indicates switching status; green power LED indicates ready.

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information.

Related Products:

• WTB11‑2P2431 – 350 mm max range variant (lower range)

• WTB11‑2N2461 – NPN output version

• WTB12‑3P2431 – W12‑3 series sensor, background suppression, 20‑350 mm range

• WT12‑3P2431 – Through‑beam sensor pair for longer range