Overview
The Allen-Bradley 872C-D5NP18-N4 is a shielded cylindrical inductive proximity sensor from the 872C Bulletin series, engineered for reliable non-contact metallic object detection in industrial automation and motion control applications. This 18mm barrel sensor provides a 5mm sensing distance with PNP (normally open) output and operates on 3-wire DC 10-30VDC. The sensor’s shielded construction minimizes false triggers from nearby metallic interference, making it suitable for demanding factory floor environments.
Key Features
- 18mm standard barrel diameter with plug-in connection type
- Normally open sourcing output with 200mA maximum load current
- Micro Quick-Disconnect 4-pin plug with nickel-plated brass body and IP67 rating
- Operating frequency of 1500 Hz for fast response detection
- Shielded sensing face for installation in confined spaces without cross-talk
- DC PNP configuration compatible with most industrial controllers
Technical Specifications
The following specifications define the performance and installation requirements of the 872C-D5NP18-N4:
Typical Applications
This sensor is ideal for applications such as presence detection on conveyors or machine tools. Additional uses include:
- Automated assembly line object detection and positioning
- Conveyor belt presence and jam detection
- Part counting and accumulation on production lines
- Machine tool spindle load sensing
- Press/punch cycle verification
- Storage and retrieval system (ASRS) position confirmation
Compatibility & Replacements
Compatible With
- Allen-Bradley PLCs (CompactLogix, ControlLogix, SLC 500)
- Rockwell Automation control systems and motion controllers
- Third-party industrial controllers with 10-30VDC discrete inputs (PNP/sourcing)
- Standard 24VDC automation power supplies
- Any system supporting PNP normally open proximity input signals
Replaces / Drop-In Replacement For
- 872C-D5NP18-D4 (identical core specifications, alternate connector variant)
- Other shielded 18mm inductive sensors with 5mm sensing distance and PNP output
Works With
- Studio 5000 Logix Designer (tag-based I/O programming)
- Allen-Bradley CompactLogix and ControlLogix digital input modules
- Micro Quick-Disconnect M12 4-pin connector systems
- EtherNet/IP networks when used with appropriate gateway modules
- Standard 24VDC discrete automation wiring practices
