WTF12-3P2431 Photoelectric Proximity Sensor 30-175mm PNP | SICK

The Original New SICK WTF12-3P2431 (Part No. 1041404) is a photoelectric proximity sensor from the W12-3 series, utilizing foreground suppression technology to reliably detect flat objects while ignoring background interference. Featuring a visible red LED light source with a precise Ø 2 mm light spot at 60 mm, it offers a sensing range of 30 mm to 175 mm, adjustable via a 5-turn potentiometer. Its rugged metal rectangular housing (15.6 × 48.5 × 42 mm) is rated IP66, IP67, and IP69K, making it suitable for demanding industrial environments including washdown applications. The sensor provides a complementary PNP output with light/dark switching and connects via an M12 4-pin connector.

Core Engineering Highlights:
Foreground suppression photoelectric proximity sensor | 30–175 mm sensing range | PNP complementary output, light/dark switching | LED visible red light (640 nm) | ≤ 330 µs response time / 1,500 Hz switching frequency | 10–30 V DC supply voltage | IP66 / IP67 / IP69K enclosure rating | M12 4-pin connector | 15.6 × 48.5 × 42 mm metal housing | –40°C to +60°C operating temperature

Key Features:

• Original New SICK WTF12-3P2431 sensor (Part No. 1041404)

• Photoelectric proximity sensor with foreground suppression for reliable detection of flat objects

• Visible red LED light source (640 nm) with Ø 2 mm light spot at 60 mm

• 5-turn potentiometer for precise sensing range adjustment

• PNP complementary output with selectable light/dark switching

• Rugged metal rectangular housing for industrial durability

• IP66, IP67, and IP69K protection for harsh environments and washdown

• Green LED (power) and yellow LED (received light status) indicators

• Circuit protection: reverse polarity (A), interference suppression (C), overcurrent and short-circuit protection (D)

• ECOLAB certified for resistance to cleaning agents

• cULus certified

Applications:

• Detection of flat objects in packaging and material handling

• Presence and position monitoring where background suppression is required

• Washdown environments in food and beverage processing

• Industrial automation requiring high protection ratings

• General factory automation and OEM equipment

Technical Specifications:

Footnotes:
¹ Object with 90% remission (based on standard white, DIN 5033).
² Average service life: 100,000 h at TA = +25°C.
³ Limit values when operated in short-circuit protected network: max. 8 A.
⁴ Without load.
⁵ Signal transit time with resistive load.
⁶ With light/dark ratio 1:1.
⁷ A = VS connections reverse-polarity protected.
⁸ C = interference suppression.
⁹ D = outputs overcurrent and short-circuit protected.

System Compatibility:

• Compatible with standard industrial controllers accepting PNP discrete inputs.

• M12 4-pin connector mates with standard M12 female cordsets.

• Suitable for systems requiring IP66/IP67/IP69K-rated photoelectric sensing.

• Configuration is performed via the on-device 5-turn potentiometer; no software required.

Related Products:

• WTB12-3P2431 (1041411) – Background suppression variant, same housing

• WL12-3P2431 (1041436) – Retro-reflective sensor, W12-3 series

• WSE12-3P2431 (1041459) – Through-beam sensor pair, W12-3 series

• BEF-KH-W12 – Mounting clamp (included with sensor)

• YF2A14-020VB3XLEAX – M12 straight female cordset, 4-pin, 2 m, PVC

PLC ERA is an independent industrial automation distributor supplying genuine Original New products through established global supply channels. All products are factory sealed when applicable and undergo quality inspection prior to shipment. SICK and W12-3 are trademarks of SICK AG.