SICK VL18-4P3940 6013659 Retro-reflective Photoelectric Sensor PNP IP67

SICK VL18-4P3940 photoelectric retro-reflective sensor detects objects reliably over a 0.05 m to 3.7 m sensing range. Cylindrical M18 threaded housing (PBT/PC) with radial beam exit. Polarizing filter and visible red LED for stable detection of highly reflective objects. Adjustable sensitivity via 270° potentiometer. PNP output with selectable light/dark switching. Rated IP67 for dust-tight and water-resistant operation in demanding industrial environments.

Applications:

• Conveyor object presence and positioning in material handling

• Automated assembly line monitoring and part counting

• Packaging machinery for container and product detection

• Logistics and warehouse automation applications

Core Specifications:

• Part number: 6013659

• Functional principle: Photoelectric retro-reflective sensor

• Sensing range max.: 0.05 m … 3.7 m (0.05 m … 3 m typical)

• Light source: LED, visible red light

• Polarising filter: ✔

• Supply voltage: 10 V DC … 30 V DC

• Residual ripple: ≤ ± 10 %

• No‑load current consumption: ≤ 30 mA

• Switching output: PNP

• Switching mode: Light/dark switching (selectable)

• Output current: ≤ 100 mA

• Response time: ≤ 2 ms

• Switching frequency: 250 Hz

• Connection type: Male connector M12, 4‑pin

• Adjustment: Potentiometer, 270° (sensitivity)

• Enclosure rating: IP67

• Housing material: Plastic (PBT/PC)

• Optical material: Plastic (PMMA)

• Dimensions (W × H × D): 18 mm × 18 mm × 75 mm

• Housing thread diameter: M18 × 1

• Weight: approx. 100 g

Advanced Specifications:

• Beam exit: Radial (light beam emitted perpendicular to housing axis)

• Light spot size: Ø 150 mm at 3 m

• Beam dispersion angle: approx. 2.8°

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

• Protection class: III

• Ambient operating temperature: –25 °C … +70 °C

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

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

• UL File No.: NMFT2.E175606

System Integration:

• Belongs to SICK VL18/V18 series of cylindrical photoelectric sensors. Mounts via M18 threaded nut (provided).

• For reflective objects or challenging surfaces with mirror-like reflections, use the integrated polarizing filter.

• Wiring details and sensitivity adjustment procedure available in the product data sheet.

Standards & Compliance:
Refer to manufacturer official documentation for detailed certification and compliance information (IP67, CE, UL, RoHS).

Related Products:

• P250 – 47×47 mm standard reflector for up to 3 m sensing range

• PL80A – fine triple reflector for maximum 3.7 m sensing range

• STE-1204-G – pre‑assembled M12 connection cable

• BEF-WN-M18 – mounting bracket for flexible sensor positioning