SICK WL12G-3V2572 1053537 Retro-reflective Photoelectric Sensor PNP 4m IP67

SICK WL12G-3V2572 is a compact retro-reflective photoelectric sensor designed to reliably detect transparent objects (glass, plastic bottles, films) and standard opaque targets. The autocollimation optical system with integrated polarising filter ensures stable detection on shiny, mirrored, or highly reflective surfaces. Featuring a visible red PinPoint LED (660 nm wave length) which creates a bright Ø 25 mm light spot at 1.5 m to simplify alignment. Single teach‑in button adjusts sensitivity, and the rugged zinc‑diecast metal housing (IP66/IP67) withstands harsh industrial environments.

Applications:

• Glass and plastic bottle detection on beverage filling lines

• Transparent film, blister pack, and foil monitoring in packaging machinery

• Object presence and positioning on high‑speed conveyor systems (up to 1,500 Hz switching frequency)

• Pharmaceutical and food industry quality inspection of see‑through containers

Core Specifications:

• Sensor/detection principle: Photoelectric retro‑reflective sensor, autocollimation (no minimum reflector distance)

• Polarising filter: Integrated

• Sensing range max.: 0 m … 4 m (with reflector PL80A)

• Type of light: Visible red light

• Light source: PinPoint LED

• Wave length: 660 nm

• Light spot size (distance): Ø 25 mm at 1.5 m

• Supply voltage: 10 V DC … 30 V DC

• Ripple: < 5 Vpp

• No‑load current consumption: 40 mA

• Switching output: PNP

• Switching mode: Light/dark switching (selectable)

• Signal voltage PNP HIGH/LOW: approx. VS – 2.5 V / 0 V

• Output current I_max.: ≤ 100 mA

• Response time: ≤ 333 µs

• Switching frequency: 1,500 Hz

• Connection type: Male connector M12, 5‑pin

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

• Protection class: III

Advanced Specifications:

• Adjustment: Single teach‑in button (pulsed or static)

• Operating modes: Mode I (6 % attenuation), Mode II (12 % attenuation), Mode III (40 % attenuation)

• Special applications: Detecting transparent objects

• AutoAdapt: ✔ (automatically optimises switching threshold for 40 % attenuation in mode III)

• Plausibility output (stable detection): approx. 0 V

• Plausibility output (unstable detection): VS – 2.5 V

• Enclosure rating: IP66 (IEC 60529), IP67 (IEC 60529)

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

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

• Housing material: Metal, zinc diecast

• Front screen material: Plastic, PMMA

• Dimensions (W × H × D): 15.5 mm × 48.5 mm × 42 mm

• Weight: 120 g

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

• MTTF D: 1,099 years

• RoHS compliant

System Integration:

• Belongs to SICK W12G series of compact photoelectric sensors.

• Operates in autocollimation mode, requiring no minimum distance to the reflector, which allows installation directly adjacent to the sensing target.

• The integrated polarising filter and three adjustable attenuation modes (6 %, 12 %, 40 %) allow reliable detection of transparent objects with varying light transmission.

• Sensitivity is adjusted via a single teach‑in button; pulsed teach‑in can be performed externally via the control input.

• The rugged zinc‑diecast metal housing withstands harsh industrial environments, including exposure to oils, coolants, and cleaning agents.

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

Related Products:

• PL80A (1003865) – Fine triple reflector for max. 4 m sensing range (required for operation)

• P250 (5304812) – 47×47 mm rectangular reflector for standard applications

• YF2A14‑xxxVB3XLEAX – M12 straight female connector cable, 5‑pin, various lengths (2 m, 5 m, 10 m), PVC

• YG2A14‑xxxVB3XLEAX – M12 angled female connector cable, 5‑pin, various lengths

• BEF‑W12 – Mounting bracket for flexible sensor positioning