SICK WTB12-3P2431 1041411 Photoelectric Proximity Sensor PNP Background Suppression

SICK WTB12-3P2431 (1041411) is a compact photoelectric proximity sensor from the reliable W12‑3 series, designed for precise object detection. Featuring advanced background suppression technology, this sensor effectively differentiates a target object from its background, minimizing false triggers due to external interference. The rugged zinc‑die‑cast housing ensures resilience in demanding industrial environments, making it ideal for packaging machinery, material handling, automotive assembly, and logistics systems.

Applications:

• Packaging machinery – bottle filling control, carton seal alignment, film‑wrapped object detection

• Material handling and conveyor systems – object presence and position monitoring

• Automotive manufacturing – part detection in welding and assembly

• Logistics and warehousing – pallet positioning, package sorting

• Food and beverage industry – packaging integrity checks (e.g., bottle cap seal verification)

Core Specifications:

• Part number: 1041411

• Series: W12-3

• Sensor/detection principle: Photoelectric proximity sensor, background suppression

• Sensing range: 20 mm … 350 mm (on 90 % reflectance white object)

• Light source: PinPoint LED, visible red light (λ = 640 nm)

• Light spot size: Ø 6 mm (at 200 mm distance)

• Supply voltage: 10 V DC … 30 V DC

• Switching output: PNP (complementary output)

• Switching mode: Light‑on / Dark‑on (selectable)

• Output current Imax.: ≤ 100 mA

• Response time: ≤ 330 µs

• Switching frequency: 1,500 Hz

• Adjustment: Potentiometer, 5 turns

• Connection type: Male connector M12, 4‑pin

• Enclosure rating: IP66 / IP67 / IP69K

• Housing material: Metal (zinc die‑cast)

• Optics material: Plastic (PMMA)

• Weight: approx. 120 g

Advanced Specifications:

• Ambient operating temperature: –40 °C … +60 °C

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

• Protection circuits: A (VS reverse‑polarity protected), C (interference suppression), D (output overcurrent and short‑circuit protected)

• Protection class: III

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

• Average LED service life: 100,000 h at T = +25 °C

• Factory calibration ensures direct out‑of‑box use

System Integration:

• Part of the SICK W12‑3 family of compact photoelectric sensors.

• Mounts via two through‑holes (centre‑to‑centre spacing 25.4 mm) using the enclosed BEF‑KH‑W12 mounting clamps.

• Wire the M12 4‑pin male connector (pin 1: V+, pin 2: output, pin 3: V‑) to a PNP PLC input. Select light‑on or dark‑on mode as required.

• Sensitivity can be fine‑tuned via the 5‑turn potentiometer for optimal detection of varying target surfaces.

Standards & Compliance:
IP66 / IP67 / IP69K (EN 60529), CE. For detailed certification and compliance information, refer to manufacturer official documentation.

Related Products (W12-3 series):

• WTB12-3N2431 – NPN output version, otherwise identical

• WL12-3P2431 – retro‑reflective sensor (requires separate reflector)

• WSE12-3P2431 – through‑beam sensor pair (emitter + receiver)

• YF2A14‑xxxVB3XLEAX – pre‑assembled connection cable (M12 straight socket to open end, available in various lengths)

• PL80A – fine triple reflector (for retro‑reflective variants)