Overview
The Balluff BOS 18KF-PA-1RE-S4-C is a retroreflective photoelectric sensor from the proven 18KF series, engineered for precise object and target detection in demanding industrial environments. Manufactured by Balluff in Germany, this sensor uses retroreflective optical technology to detect objects within its sensing range, making it ideal for conveyor systems, positioning applications, and automated assembly lines where reliable detection is critical to uptime.
Key Features
- Retroreflective sensing method – Uses reflective targets for extended detection range
- PNP output configuration – Supports both normally open (NO) and normally closed (NC) switching logic
- Compact cylindrical housing – 18 mm diameter × 71.5 mm length fits tight installation spaces
- M12x1 male connector – Standard industrial connector for quick disconnect and replacement
- LED red light source – Visible light for easier setup and troubleshooting
- Operating voltage 10–30 VDC – Compatible with most industrial 24 VDC control systems
- IP67 rated – Sealed against dust and water ingress for harsh environments
Technical Specifications
- Series: 18KF
- Principle of operation: Photoelectric sensor (retroreflective)
- Light type: LED red light
- Output type: PNP NO/NC
- Operating voltage: 10–30 VDC
- Output current: 100 mA (typical)
- Connector type: M12x1 male, 4-pin
- Housing material: PBT (polybutylene terephthalate)
- Sensing surface material: PMMA
- Dimensions: Ø 18 × 71.5 mm
- IP rating: IP67
- Operating temperature: −25 to +55 °C
- Approvals: CE, cULus, EAC, WEEE
Typical Applications
- Conveyor system object detection and positioning
- Automated packaging and labeling systems
- Assembly line presence verification
- Material handling and sorting operations
- Web-guiding and edge-detection applications
- Machine tool workpiece detection
Compatibility & Replacements
Compatible With
- Standard PLC and industrial controller systems accepting 24 VDC PNP input
- EtherNet/IP and PROFIBUS via gateway adapters
- Most industrial 24 VDC power supplies
- M12 connector-based automation networks
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering to ensure the exact sensing range and output configuration match your application requirements. The 18KF series includes multiple variants with different optical specifications.
Works With
- Rockwell Automation CompactLogix and ControlLogix controllers (via digital input modules)
- Siemens S7-1200, S7-1500, and legacy S7-300 PLCs
- Mitsubishi FX and Q-series controllers
- Omron CP/CJ-series PLCs
- Any PLC or motion control system with 24 VDC digital input capability
