Allen Bradley 871C-DH2M12-A2 Sensing Distance Sensor Inductive Proximity

Description:

The Allen‑Bradley 871C‑DH2M12‑A2 inductive proximity sensor is used in industrial automation systems to detect the presence of metal targets without physical contact and provide dependable switching signals. Commonly installed in conveyor systems, packaging machinery, robotic cells, and assembly lines for position sensing and object detection. Maintenance teams and system integrators use this sensor for system upgrades, diagnostics, and replacement of worn or failed proximity switches.

Applications:

The Allen Bradley 871C‑DH2M12‑A2 sensor is widely used in automation environments requiring reliable non‑contact metal detection. It is commonly found in material handling systems, pick‑and‑place machinery, CNC equipment, packaging lines, and safety interlock systems where accurate and repeatable sensing of metallic targets supports process control, sequencing, and operational reliability.

Technical Specifications:

• Sensor type: Inductive proximity sensor
• Model: 871C‑DH2M12‑A2
• Sensing distance: ~2–5 mm (approximate medium‑range detection)
• Supply voltage: 10–30 VDC
• Output type: NPN normally open (NO)
• Output current: Up to ~200 mA
• Response frequency: ~500 Hz
• Housing: M12 threaded cylindrical
• Protection rating: IP67 (industrial dust/water resistant)
• Connection: M12 4‑pin connector
• Indicator: Built‑in LED for sensing status
• Operating temperature: –25 °C to +70 °C
• Mounting: Threaded cylindrical design for secure installation

Common Replacements:

• Allen‑Bradley 871TM‑R4EP11A
• Omron E2E‑X5ME1
• Pepperl+Fuchs NJ5‑18GK‑WS