Overview
The Sick WL12-2P430 is a retro-reflective photoelectric sensor designed for reliable object and material detection in industrial environments. Featuring DC 10-30V supply compatibility and a 7-meter maximum sensing range, this sensor delivers consistent performance in manufacturing, logistics, and packaging automation. The unit operates via visible red LED light with potentiometer adjustment for precise threshold tuning.
Key Features
- Retro-reflective detection: Senses objects via reflected light using mirrors or reflective tape—ideal for long-distance detection
- PNP switching output: Direct integration with standard industrial control circuits and PLCs
- 7-meter sensing range: Maximum range up to 7m; adjustable operating range 0-5m standard
- LED light source: Visible red light (approximately 660 nm wavelength) for reliable ambient-light compensation
- IP67 enclosure: Sealed against dust, moisture, and splash—suitable for harsh factory floors
- M12 4-pin connector: Industry-standard quick-connect interface for rapid field installation
- Potentiometer adjustment: Fine-tuning of light/dark switching threshold without special tools
Technical Specifications
- Supply Voltage: 10-30 V DC
- Power Consumption: 30 mA
- Switching Output: PNP (light/dark switchable)
- Output Current Rating: 100 mA maximum
- Response Time: ≤ 330 µs
- Sensing Range (max): 0-7 m
- Light Type: Visible red LED
- Ripple Voltage: ≤ 5 Vpp
- Connector Type: Male M12, 4-pin
- Housing Material: Metal, zinc die-cast
- Optics Material: Plastic (PMMA)
- Dimensions (W × H × D): 15 mm × 49 mm × 41.5 mm
- Enclosure Rating: IP67
- Operating Temperature: −40 °C to +60 °C
- Storage Temperature: −40 °C to +75 °C
- Weight: 0.24 lbs (approx. 110 g)
- Certifications: UL (File No. NRKH E181493 & NRKH7 E181493)
Typical Applications
- Conveyor line object detection and counting
- Box/pallet positioning on packaging machinery
- Assembly line presence sensing with reflective targets
- Material handling and logistics automation
- Long-distance target detection in warehouse or plant environments
- Label and edge detection on moving products
Compatibility & Replacements
Compatible With
- Siemens S7-1200, S7-1500, and S7-200 Smart PLCs
- Allen-Bradley CompactLogix, ControlLogix via PNP input modules
- Mitsubishi FX and Q-series PLCs
- Omron CP/CJ-series controllers
- Standard 24 V PLC input modules with sinking/sourcing capability
- EtherCAT, PROFIBUS, and PROFINET fieldbus systems (via industrial gateways)
- Most industrial automation control systems supporting PNP proximity sensors
Replaces / Drop-In Replacement For
- Sick WL12-2P430 (all revisions)
- Previous versions of the WL12 retro-reflective family with 7m range
- Other retro-reflective photoelectric sensors requiring M12 quick-connect and 10-30 V DC operation
Works With
- Siemens TIA Portal (Studio 5000 indirect via I/O modules)
- Allen-Bradley Studio 5000 Logix Designer (via analog/digital input cards)
- Mitsubishi GX Developer and GX Works
- Omron CX-Programmer and Sysmac Studio
- Standard industrial retro-reflective mirrors and reflective tape (3M, Sick brand)
- IP67-rated M12 cable assemblies (4-pin, 5m–50m standard lengths)
