SICK WTB9‑3P2461 1049049 Photoelectric Proximity Sensor PNP 500mm

SICK WTB9‑3P2461 is a miniature photoelectric proximity sensor with background suppression from the W9‑3 series. PinPoint LED light source with visible red light (635 nm wavelength) provides a precise, small light spot for reliable object detection. 5‑turn mechanical spindle for sensitivity adjustment. PNP complementary output with selectable light/dark switching. M8‑4 male connector. IP66, IP67, IP69K enclosure rating. Suitable for high‑speed positioning, material handling, packaging and factory automation requiring accurate detection of small parts or differently coloured objects.

Applications:

• High‑speed conveyor object detection (switching frequency up to 1,500 Hz)

• Small part positioning in automated assembly and pick‑and‑place systems

• Packaging machinery for product sorting and quality control

• Material handling and logistics automation

• Challenging environments requiring IP69K protection

Core Specifications:

• Functional principle: Photoelectric proximity sensor, background suppression

• Sensing range max.: 20 mm … 500 mm (90% reflectance)

• Sensing range: 20 mm … 340 mm (18% reflectance), 20 mm … 200 mm (6% reflectance)

• Light source: PinPoint LED, visible red light (λ = 635 nm)

• Light spot size (distance): 4.5 mm at 75 mm, 12 mm at 250 mm

• Supply voltage: 10 … 30 V DC

• Residual ripple: < 5 Vpp

• Switching output: PNP complementary

• Output current I_max.: ≤ 100 mA (at U_v = 10 … 30 V, ambient < 50 °C)

• Response time: < 333 µs

• Switching frequency: 1,500 Hz

• Connection: Male connector M8, 4‑pin

• Adjustment: Potentiometer, 5 turns

• Enclosure rating: IP66 / IP67 / IP69K

• Ambient operating temperature: –40 °C … +60 °C (at U_v ≤ 24 V, I_A ≤ 50 mA)

• Ambient storage temperature: –40 °C … +75 °C

Advanced Specifications:

• No‑load current consumption: ≤ 30 mA

• Voltage drop: ≤ 2 V (at I_A = 100 mA)

• Circuit protection: Reverse polarity, short‑circuit, interference pulse suppression

• Protection class: III

• Housing material: Plastic, VISTAL®

• Optics material: Plastic, PMMA

• Dimensions (W × H × D): 12.2 mm × 49.8 mm × 23.6 mm

• Weight: approx. 13 g

• UL File No.: NRKH.E181493

• MTTF D: 999 years

• RoHS compliant

System Integration:

• Belongs to SICK W9‑3 series of miniature photoelectric sensors.

• Mounts via two reinforced metal‑lined through‑holes (standard 1‑inch spacing).

• Wire the M8 4‑pin male connector (pin 1: V+, pin 3: V‑, pin 4: output) to a PNP PLC input and select light‑on or dark‑on mode using the L/D selector.

• Adjust the sensing threshold by turning the 5‑turn mechanical spindle.

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

Related Products:

• WTB9‑3N2461 (1049048) – NPN output version

• WTB9‑3P2461S01 – Variant with M12 4‑pin male connector

• BEF‑W9A – Mounting bracket for flexible sensor positioning

• YF8U14‑xxxVA3XLEAX – M8 straight female connector cable, 4‑pin, various lengths, PVC