Overview
The Keyence PZ2-51T photoelectric sensor is a compact, self-contained transmitter unit designed for reliable object detection in industrial control systems. This model features built-in amplifier electronics, eliminating the need for separate amplification hardware. Operating on 12-24VDC input, the PZ2-51T delivers stable NPN switching output with a 7-meter detection range, making it suitable for inline part detection, packaging lines, and material handling systems.
Key Features
- Built-in amplifier—no separate amplifier module required
- NPN output configuration with 7-meter detection range
- Square transmissive cable-type housing design
- Red LED indicator for operational status
- Compact form factor for tight installation spaces
- Durable construction for industrial environments
Technical Specifications
Key operational parameters for system integration and troubleshooting:
- Input Voltage: 12–24 VDC
- Output Type: NPN
- Detection Range: 7 meters
- Sensor Type: Square Transmissive (opposed)
- Housing: Cable type
- Built-in Amplifier: Yes
- Status Indicator: Red LED power indicator
- Weight: 0.11 lbs
Typical Applications
- Inline object detection and presence sensing
- Part positioning and conveyor control
- Packaging machine fill-level detection
- Assembly line workpiece counting
- Automatic door and gate opening systems
- Industrial material sorting and routing
Compatibility & Replacements
Compatible With
- Standard 12–24VDC industrial control systems
- Rockwell Automation PLC inputs (with proper voltage conditioning)
- Siemens S7 series controllers
- Omron PLCs and logic controllers
- Mitsubishi FX series and Q series controllers
- Any system supporting NPN sensor inputs at 12–24VDC
Replaces / Drop-In Replacement For
- Keyence PZ2-51 models in equivalent configurations
- Legacy Keyence PZ2 series transmitters (verify pinout before installation)
Works With
- Standard industrial NPN input modules and signal conditioning
- Isolated safety relays and emergency stop circuits
- Fieldbus integration via third-party I/O adapters
- Current models such as PZ-G51N for modernization upgrades
