SICK WL9-3N2230 Photoelectric Sensor – 4m Detection

SICK WL9-3N2230 Photoelectric Sensor – Precision Detection in Compact Design

The SICK WL9-3N2230 Photoelectric Sensor is a compact retro-reflective sensor developed for accurate and stable detection of objects in industrial automation. It operates with a visible red PinPoint LED light and a coaxial optical system, allowing precise sensing even when working near reflective surfaces or confined spaces. Designed for durability with a VISTAL® plastic housing and protection rated up to IP69K, this sensor performs reliably in challenging environments. With a sensing distance up to 4 meters and high optical clarity, it provides dependable performance for production lines, robotic cells, and automated packaging systems.

The WL9-3N2230 is built to deliver rapid and consistent object detection in fast-moving processes. Its NPN complementary output supports both light-on and dark-on modes, offering flexibility for integration with various control systems. The high-speed response of under 0.5 ms ensures accurate detection, even for small or fast-passing items. A clearly visible red LED spot makes setup easy, while the long service life reduces maintenance downtime. This sensor is especially suited for conveyor tracking, robotic alignment, and automated assembly, where reliability, compact size, and precision are critical to maintaining smooth and efficient operations.

Why SICK WL9-3N2230?

Because it blends precision, toughness, and simplicity in one compact sensor. The WL9-3N2230 turns demanding industrial detection into effortless performance. Its red PinPoint LED creates a sharp, focused beam that maintains accuracy even in reflective or dusty settings. Compact yet powerful, it fits where others can’t—offering clean installation, clear visibility, and unwavering reliability for continuous production flow.

What Problem Does It Solve?

The WL9-3N2230 eliminates detection errors caused by background reflection, vibration, or fast-moving parts. It ensures consistent sensing accuracy in complex automation lines where space is tight and precision is vital. By delivering fast, stable detection without constant recalibration, it removes downtime frustrations and boosts productivity in every industrial setting.

Key Features & Specifications – SICK WL9-3N2230: Article Number 1049071

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Commercial Information – SICK WL9-3N2230: Article Number 1049071

The Applications of SICK WL9-3N2230

1.Transparent Bottle Detection in Beverage Lines
Production lines handling transparent bottles often face false readings due to reflections and label glare. The SICK WL9-3N2230 uses its sharp red PinPoint LED and coaxial optics to accurately detect clear PET bottles even under fluctuating lighting conditions. Its rapid 0.5 ms response ensures each passing bottle is counted precisely, while the rugged IP69K housing resists washdowns and moisture. Compact and lightweight, it fits easily between conveyors and guard rails, providing continuous operation and improving overall line efficiency in beverage and packaging plants.

2.Carton Verification in Automated Packing Stations
Automated e-commerce lines require reliable sensors that can confirm carton presence before labeling or sealing. The WL9-3N2230 handles boxes of different materials—matte, glossy, or taped—without interference from reflective backgrounds. Its built-in polarizing filter eliminates false triggers, ensuring labels are only applied when a carton is positioned correctly. With a compact design and plug-in M8 connector, installation is fast even in narrow enclosures. This sensor minimizes errors, reduces downtime, and keeps high-speed packaging lines operating smoothly during peak production.

3.Label Roll Monitoring on Printing and Rewinding Machines
During label printing, any missed detection of the label web can cause misalignment or waste. The WL9-3N2230 maintains a stable optical signal on reflective liners and glossy paper surfaces. Its 1 kHz switching frequency allows precise tracking of fast-moving label rolls. The sensor’s bright red LED spot simplifies alignment for maintenance staff, while the robust VISTAL® housing resists dust and adhesive buildup. Perfect for label production, printing, or rewinder applications, it ensures flawless registration and prevents unplanned stoppages.

4.Precision Part Detection for Robotic Workcells
In robotic pick-and-place systems, shiny fixtures and tight mounting spaces can disrupt traditional sensors. The WL9-3N2230’s coaxial beam design and polarizing filter eliminate reflections from metal tooling, ensuring accurate part presence confirmation before robotic pickup. Its ultra-fast switching response synchronizes perfectly with robotic motion sequences, minimizing cycle time delays. Built to withstand oil mist, coolant spray, and vibration, this sensor guarantees consistent part detection and seamless integration into modern industrial automation cells.

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