SICK VL18-4P3640 6013605 Retro-reflective Photoelectric Sensor

SICK VL18-4P3640 is a cylindrical retro-reflective photoelectric sensor for standard industrial object detection. PNP switching output with selectable light/dark-switching mode. 18 mm diameter plastic housing, M18 × 1 thread, axial beam exit. 0.05 … 3.7 m max sensing range (0.05 … 3 m typical with C110A reflector). Visible red light source with polarising filter. Rated IP67.

Applications:

• Object presence detection on conveyor and material handling systems

• Part positioning in automated assembly and production lines

• Packaging machinery for container and product detection

• Logistics and warehouse automation

Core Specifications:

• Functional principle: Photoelectric retro-reflective sensor

• Sensing range max.: 0.05 m … 3.7 m

• Sensing range typical: 0.05 m … 3 m

• Light source: LED, visible red light

• Polarising filter: Yes

• Supply voltage: 10 … 30 V DC

• 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: Male connector M12, 4‑pin

• Enclosure rating: IP67

• Housing material: Plastic (PBT/PC)

• Optics material: Plastic (PMMA)

• Dimensions (W × H × D): 18 mm × 18 mm × 78 mm

• Housing length: 78 mm

• Thread diameter: M18 × 1

• Weight: 100 g

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

Advanced Specifications:

• Light spot size: Ø 150 mm at 3 m

• Beam dispersion angle: approx. 2.8°

• Focal length: approx. 2.8°

• Adjustment: None (fixed sensitivity)

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

• Protection class: III

• MTTF D: 68 years

• UL File No.: NMFT2.E175606

System Integration:

• Belongs to SICK V18 series of cylindrical photoelectric sensors. Mounts via M18 × 1 thread using supplied nuts.

• Reflector required for operation (e.g., C110A, P250, PL80A; order separately).

• Wire the M12 4‑pin male connector (pin 1: V+, pin 3: V‑, pin 4: output) to a PNP PLC input.

• Select light‑on or dark‑on switching mode via control input C.

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

Related Products:

• C110A – Standard reflector for up to 3 m sensing range

• P250 – 47×47 mm rectangular reflector

• PL80A – Fine triple reflector for enhanced range

• YF2A14‑020VB3XLEAX – M12 straight female connector cable, 4‑pin, 2 m, PVC