VL18-4N3240 | SICK Photoelectric Retroreflective Sensor M18 3.7 m

SICK · Sensors & Instrumentation

Description  The SICK VL18-4N3240 is a photoelectric retroreflective sensor engineered for reliable medium-range object detection in industrial automation. Featuring visible red LED light and polarized optics, it delivers consistent switching performance over distances up to 3.7 m. Its robust M18 cylindrical housing supports dependable operation in demanding environments.     Technical Specifications  Condition New/Never Used Surplus Brand SICK Category Industrial Sensors Part Number VL18-4N3240 Subcategory Photoelectric Sensors Sensor Type Photoelectric retroreflective sensor Functional Principle Retroreflective, polarized Housing Design Cylindrical Thread Size M18 × 1 Housing Length 78 mm Optical Axis Axial Sensing Range 0.05–3.0 m Maximum Sensing Range Up to 3.7 m Light Type Visible red light Light Source LED Adjustment Method Potentiometer, 270° Supply Voltage 10–30 V DC Current Consumption Approx. 30 mA Switching Output NPN Switching Mode Light/Dark switching Response Time ≤ 2 ms Switching Frequency 250 Hz Connection Type M12 male connector, 4-pin Housing Material Metal, nickel-plated brass Optics Material Plastic, PMMA Enclosure Rating IP67 Operating Temperature -25 °C to +70 °C Weight 120 g     Information About VL18-4N3240 The VL18-4N3240 is part of SICK’s VL18 series of photoelectric sensors, designed for precise retroreflective detection with high resistance to ambient light and reflective backgrounds. It operates with a dedicated reflector and includes a polarizing filter to prevent false switching from shiny surfaces. Sensitivity is adjustable via a 270° potentiometer, enabling fine tuning for different applications. The sensor’s metal housing, IP67 rating, and comprehensive circuit protections make it suitable for continuous industrial use. Key Features: Retroreflective Photoelectric Principle: Detects objects using reflected light from a dedicated reflector. Polarized Optics: Minimizes false detection from reflective or glossy surfaces. Extended Detection Range: Supports sensing distances from 0.05 m up to 3.7 m. Visible Red LED Light Source: Allows easy alignment and stable optical performance. Adjustable Sensitivity: 270° potentiometer enables precise detection tuning. Light/Dark Switching Selectable: Configurable logic for flexible control integration. NPN Switching Output: Compatible with standard PLC and industrial control inputs. Robust M18 Cylindrical Housing: Metal construction for durability in harsh environments. High Environmental Protection: IP67 enclosure rating for dust and moisture resistance. Integrated Circuit Protection: Includes reverse polarity and overload protection. The VL18-4N3240 delivers the reliability and precision required for industrial retroreflective photoelectric sensing applications.

Brand: SICK · Category: Sensors & Instrumentation

Key features

• Retroreflective Photoelectric Principle: Detects objects using reflected light from a dedicated reflector.
• Polarized Optics: Minimizes false detection from reflective or glossy surfaces.
• Extended Detection Range: Supports sensing distances from 0.05 m up to 3.7 m.
• Visible Red LED Light Source: Allows easy alignment and stable optical performance.
• Adjustable Sensitivity: 270° potentiometer enables precise detection tuning.
• Light/Dark Switching Selectable: Configurable logic for flexible control integration.
• NPN Switching Output: Compatible with standard PLC and industrial control inputs.
• Robust M18 Cylindrical Housing: Metal construction for durability in harsh environments.
• High Environmental Protection: IP67 enclosure rating for dust and moisture resistance.
• Integrated Circuit Protection: Includes reverse polarity and overload protection.

Specifications

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