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The SICK WLL260 is a stand-alone fiber-optic amplifier designed for reliable proximity and through-beam sensing applications. It utilizes visible red light emitted by an LED to detect objects within defined ranges, offering high sensitivity and fast response times. The device operates in both proximity and through-beam configurations, enabling flexible integration into various industrial environments. With a compact rectangular housing and robust construction, the WLL260 delivers consistent performance across diverse conditions. Its PNP switching output supports direct connection to control systems, while its selectable light/dark mode allows users to configure detection logic based on application needs. The amplifier is engineered for long-term reliability with an average service life of 100,000 hours at +25°C, making it ideal for continuous operation in demanding industrial settings.
The WLL260 leverages a fiber-optic amplification technology using a visible red LED light source to detect objects. It operates in either proximity or through-beam mode, depending on installation requirements. The device features light/dark switching capability, selectable via a built-in selector, enabling detection of object presence or absence as needed. With a response time of ≤0.7 ms and a maximum switching frequency of 700 Hz, it ensures fast and accurate signal transitions. The use of visible red light provides excellent contrast for detecting reflective surfaces, particularly with objects having 90% remission (based on standard white, DIN 5033). This technology ensures stable performance even in challenging lighting environments. Designed for durability and long-term operation, the WLL260 maintains consistent output over time, supported by a service life of up to 100,000 hours at +25°C.
The SICK WLL260 has dimensions of 25 mm (W) × 77.8 mm (H) × 63 mm (D), with a weight of 120 g. It operates within a supply voltage range of 10 V DC to 30 V DC, with ripple ≤5 V pp. The device consumes 35 mA of current and features a PNP switching output for compatibility with standard industrial control systems. Sensing ranges vary by configuration: up to 65 mm (proximity), up to 110 mm (proximity), or up to 800 mm (through-beam). The proximity sensing range is specified as 0 mm to 50 mm and 0 mm to 90 mm, depending on object reflectivity. Through-beam operation extends the sensing range to a maximum of 700 mm. All values are based on standard white objects with 90% remission (DIN 5033).
The WLL260 is configured using a simple light/dark switching mode selector, allowing users to choose whether detection occurs when an object blocks the beam or when no object is present. It connects via a male M12, 4-pin connector, enabling straightforward integration into existing automation systems. The device supports direct mounting and pairing with corresponding receiver units in proximity or through-beam setups. Its PNP output ensures compatibility with most industrial logic controllers and PLCs without additional interface components. Circuit protection is provided at levels A, B, C, and D, enhancing safety and system reliability. No external power regulation is required due to its wide input voltage range (10–30 V DC), simplifying installation in diverse electrical environments.
The WLL260 is designed for operation within industrial environments with ambient temperatures ranging from -25°C to +70°C. It meets protection class II standards, ensuring user safety against electric shock. The device is suitable for use in humid or dusty conditions due to its robust housing design and internal circuit protection. Operation under standard white object reflectivity (90% remission, DIN 5033) ensures consistent performance across different materials. While not explicitly rated for explosive atmospheres, it is built to withstand typical industrial contaminants. The device performs reliably within the specified voltage range and current consumption, making it suitable for continuous operation in demanding production lines.
The SICK WLL260 is ideal for a wide range of industrial applications requiring precise object detection. It can be used in packaging machines to detect product presence or absence, in assembly lines for part positioning, and in material handling systems where proximity or through-beam sensing is required. Its extended sensing range up to 800 mm (through-beam) makes it suitable for large-scale monitoring tasks. The device’s fast response time of ≤0.7 ms ensures real-time feedback in dynamic processes. Applications include conveyor monitoring, edge detection, and safety interlocks where reliable and rapid switching is essential. Its compact size and ease of integration make it a practical solution for retrofitting or new installations across manufacturing and processing environments.
| Specification | Value |
|---|---|
| Sensing range | max. |
| Light source | LED 4) |
| Current consumption | 35 mA 3) |
| Switching output | PNP |
| Response time | ≤ 0.7 ms 4) |
| Switching frequency | 700 Hz 5) |
| Connection type | Male connector M12, 4-pin |
| Protection class | II 10) |
| Weight | 120 g |
| Housing material | Plastic, ABS |
| Dimensions | (W x H x D) |
| Supply voltage | U B |
| connector | M12, 4-pin |
| Ambient temperature | , storage |
| Dimensions (W x H x D) | 25 mm x 77.8 mm x 63 mm |
| value | IP66 |
| Sensing range max. | 0 mm ... 65 mm (Proximity system) 1) 2) 0 mm ... 110 mm (Proximity system) 1) 3) 0 mm ... 800 mm (Through-beam system) 2) |
| Supply voltage U B | 10 V DC ... 30 V DC 1) |
| Ripple | ≤ 5 V pp 2) |
| Circuit protection | A 6) B 7) C 8) D 9) |
| Enclosure rating | IP66 |
| Ambient operating temperature | –25 °C ... +55 °C |
| Ambient temperature, storage | –40 °C ... +70 °C |
| Unit weight | 0.239 Kilograms |
| Net unit weight | 0.239 Kilograms |
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