Overview
The Allen-Bradley 871T-H8K18 inductive proximity sensor is a standard tubular sensor from Rockwell Automation’s proven 871 series family. This Series B model provides robust, contact-free detection of ferrous and nonferrous metals, making it suitable for assembly lines, material handling systems, and motion control applications where accuracy and reliability are critical.
Key Features
- Tubular cylindrical design for compact installation in tight spaces
- Non-contact inductive sensing eliminates mechanical wear and extends service life
- Consistent performance across temperature and humidity variations
- Standard connector interface for straightforward integration into automation systems
- Proven reliability in harsh industrial environments
Technical Specifications
While exact nameplate specs for this specific Series B variant should be verified with Rockwell Automation technical documentation, typical 871T tubular sensors operate at 10–30 VDC with switching outputs rated for industrial PLC and relay applications.
- Sensing Technology: Inductive (electromagnetic)
- Body Style: Tubular/cylindrical
- Housing Material: Metal or plastic (verify specific model)
- Operating Voltage: 10–30 VDC (typical for 871T DC models)
- Output Type: NPN or PNP switching (verify connector type)
- Certifications: UL/CSA listed (standard for 871 series)
- Series: B
Typical Applications
- Conveyor belt position detection and control
- Parts counting and sorting in assembly lines
- Servo motor positioning feedback and limit sensing
- Robot gripper and actuator position verification
- Machine tool workpiece clamping and verification
- Automated storage and retrieval systems (ASRS)
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix platforms
- Rockwell Automation Studio 5000 / RSLogix environments
- Generic 24 VDC industrial control systems
- Standard PLC input modules (10–30 VDC rated)
- Industrial relay logic and hardwired control circuits
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 871T-H8K18 is part of Allen-Bradley’s 871T tubular series; other Series B models may share pinout and electrical characteristics. Always cross-reference connector type and voltage rating with legacy equipment specifications.
Works With
- Studio 5000 (Logix Designer)
- RSLogix 5000 and RSLogix 500 platforms
- EtherNet/IP industrial networks (with appropriate gateway)
- Discrete 24 VDC hardwired input circuits
- Allen-Bradley Micro800 and CompactLogix controllers
