Overview
The Omron E3Z-R81-J0SRW-P2 is a compact photoelectric sensor with built-in amplifier designed for retro-reflective detection in industrial automation and motion control. This pre-wired model features a 2 meter cable for straightforward integration into packaging, conveyor, and positioning applications. The sensor uses a red LED light source (660 nm) and delivers 1 ms response time with PNP open-collector output suitable for PLCs and controllers.
Key Features
- Retro-reflective sensing method with multi-stage reflector (MSR) function for superior performance
- Built-in amplifier eliminates need for external electronics
- PNP open-collector output, 10–100 mA capacity at 12–26.4 VDC
- Fast 1 ms response time for high-speed applications
- Red LED light source (660 nm wavelength)
- IP67 protection rating for washdown and dusty environments
- Compact square profile (17 mm × 10.8 mm × 33.3 mm) fits tight spaces
- Pre-wired 2 m cable connection with connector model options available
Technical Specifications
Key performance ratings for the Omron E3Z-R81-J0SRW-P2 include a sensing distance of 100 mm to 4 m (when paired with the E39-R1S reflector), 1 ms response time, and 75 mm cut-off size diameter. Supply voltage range is 12–24/26.4 VDC with 10–100 mA output current capacity. Operating temperature range is −25°C to +55°C, with 35–85% relative humidity tolerance. The sensor is rated IP67 and weighs approximately 17 g.
Typical Applications
- Conveyor systems and material handling (package detection, jam prevention)
- Assembly line positioning and object counting
- Packaging machinery (fill-level detection, presence verification)
- Bottle and cap detection in beverage production
- Automotive production line quality checks
- Label and tag detection in document processing
Compatibility & Replacements
Compatible With
- Omron CP/CJ/CS series PLCs via I/O modules
- Allen-Bradley PLC input cards (24 VDC PNP sensors)
- Siemens S7-1200 and S7-1500 via digital input modules
- Mitsubishi FX and Q series controllers
- Any 24 VDC PNP-input capable industrial controller
- Standard industrial I/O terminals and relay modules
Replaces / Drop-In Replacement For
The E3Z-R81-J0SRW-P2 directly replaces other E3Z-R81 configurations with the same electrical and mounting footprint. Verify pin configuration and cable length when substituting alternative pre-wired models. Some prior Omron models (E3Z-R31, E3Z-R51) have similar form factors but require compatibility confirmation.
Works With
- Omron CX-Programmer and Sysmac Studio software for logic integration
- Standard 24 VDC DIN rail power supplies and I/O terminals
- Omron E39-R1S and E39-R1 reflectors (recommended for optimal range)
- Most industrial automation platforms supporting 24 VDC PNP input
- Omron sensor connector and cable extensions (XS Series available)
