Overview
The Allen-Bradley 871P-DC29NB140-N4 is a can-type inductive proximity sensor engineered for dependable object detection in harsh industrial environments. This DC-powered, 4-wire motion-detection sensor delivers long-range sensing capability in a compact cylindrical form factor, making it ideal for machinery integration, conveyor line monitoring, and automated assembly systems where space is limited and reliability is critical.
Key Features
- Long-range detection capability in cylindrical can form factor
- 4-wire DC powered operation for simple relay and PLC integration
- Motion-detection logic for dynamic switching applications
- Durable industrial-grade construction resistant to vibration and impacts
- Easy flush or non-flush mounting options for flexible installation
- Ferrous metal detection optimized for manufacturing and material handling
Technical Specifications
- Part Number: 871P-DC29NB140-N4
- Manufacturer: Allen-Bradley / Rockwell Automation
- Sensor Type: Inductive Proximity
- Housing Style: Can (Cylindrical)
- Power Supply: DC (Direct Current)
- Wire Configuration: 4-Wire
- Detection Mode: Motion Detection
- Detection Range: Long-range (approximately 29 mm)
- Output Type: Normally Open / Normally Closed switching logic
- Operating Environment: Industrial indoor / outdoor rated
- Connection: Pin or connector-based terminal
- Condition: New in Box
Typical Applications
- Conveyor belt object detection and material tracking
- Automated assembly line presence verification
- Machinery safety gates and access control
- Production line counting and sorting systems
- Packaging equipment part detection
- Material handling and warehouse automation
Compatibility & Replacements
The 871P-DC29NB140-N4 is part of Allen-Bradley’s Bulletin 871P can sensor family. Related models in the same series include the 871P-DC19NB76-N4 (shorter range variant) and 871P-DD29NB140-N4 (AC-powered alternative). Cross-family alternatives from Rockwell Automation include tubular and rectangular inductive proximity sensors. Consult your control system documentation or contact technical support for verified drop-in replacement options. Always verify voltage, wire configuration, and mounting before substitution.
