Overview
The Allen-Bradley 872C-N8NP12-D4 is a WorldProxâ„¢ inductive proximity sensor from Rockwell Automation’s 872C Series of general-purpose sensors. This 12mm diameter tubular sensor features nickel-plated brass construction, an unshielded sensing head with 8mm sensing distance, normally open (PNP) output, and Micro QD (DC) connection. The device supports 3-wire DC operation with a normally open output, making it ideal for presence, position, or motion detection tasks.
Key Features
- Extended sensing range of 8mm with nickel-plated brass housing for high performance and longevity in demanding environments
- Operates at up to 30 VDC and handles load currents up to 200 mA
- Enclosure rating IP67 for industrial environments with operating temperature range -25°C to +70°C
- Compact 12 mm barrel diameter for installation in tight spaces
- Quick-Disconnect (DC) connector for easy installation and maintenance
- Non-contact metallic object detection with consistent repeatability
Technical Specifications
- Sensing Distance: 8 mm (unshielded)
- Operating Voltage: 10–30 V DC
- Load Current: 200 mA maximum
- Leakage Current: ≤10 µA
- Output Type: Normally Open (PNP/Source)
- Connector: 4-pin Micro QD (M12)
- Barrel Diameter: 12 mm
- Housing Material: Nickel-plated brass
- IP Rating: IP67
- Operating Temperature: -25°C to +70°C
- Switching Frequency: 1300 Hz
Typical Applications
This DC-operated sensor is commonly used in material handling, assembly lines, and industrial machinery. The 872C-N8NP12-D4 is well-suited for:
- Presence and proximity detection on production lines
- Part positioning and motion control in automated systems
- Object counting and sorting applications
- Position feedback in conveyor systems
- Metal target detection in confined mounting areas
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix, ControlLogix, and MicroLogix controllers
- Rockwell Automation Studio 5000 Logix Designer software
- EtherNet/IP and PROFINET industrial networks
- PLC and motion control systems accepting 3-wire DC sensors
- Analog and discrete I/O modules with 10–30 VDC input
Replaces / Drop-In Replacement For
- Prior versions of the 872C-N8NP12 family (same form factor and pinout)
- Comparable third-party 12 mm inductive proximity sensors with M12 M12 connectors and 8 mm sensing range
Works With
- Micro QD DC quick-disconnect connectors and cabling
- DC-rated terminal blocks and input modules
- Industrial control logic and PLC ladder diagrams
- Motion control systems and variable frequency drives (via discrete input)
