Overview
The Allen-Bradley 42GRU-9202-QD is a polarized retroreflective photoelectric sensor from the PHOTOSWITCH Series 9000 family. This sensor detects objects by sensing the reflection of a light beam off a retroreflective target, operates in standard on/off mode, has a sensing range of 4.87 meters (16 feet), and is powered by 70-264V AC/DC. The combination of polarized optics, compact form factor, and 5-pin mini quick-disconnect connector makes this sensor a dependable choice for industrial automation applications requiring reliable object detection.
Key Features
- Polarized Retroreflective Detection: Polarized optics help avoid false detections from shiny surfaces, ensuring accuracy in challenging environments.
- Extended Sensing Range: Detects objects at distances ranging from 0.050 meters to 4.9 meters, translating to approximately 0.16 to 16 feet.
- Visible Red Light Source: The sensor operates at 660 nanometers for easy alignment and troubleshooting.
- SPDT Electromechanical Relay Output: Single-pole double-throw (SPDT) electromechanical relay output facilitates easy integration into control systems.
- Quick-Disconnect Connector: 5-pin mini quick-disconnect (QD) connector simplifies installation and maintenance.
- Fast Response Time: Field of view is 1.5 degrees with a quick response time of 0.5 milliseconds for dynamic applications.
Technical Specifications
- Operating Voltage: 70–264V AC/DC
- Current Draw: 30 mA
- Sensing Range: 0.050–4.87 m (0.16–16 ft)
- Light Source: Infrared (IR) 660 nm, visible red
- Output Type: SPDT electromechanical relay
- Circuit Type: Standard On/Off
- Response Time: 0.5 ms
- Field of View: 1.5 degrees
- Connection: 5-pin mini quick-disconnect (QD)
- Sensing Method: Polarized retroreflective
- Series: PHOTOSWITCH Series 9000
- Certifications: C-TICK, CCC, KC
Typical Applications
The sensor is commonly used in conveyor systems, material handling, and packaging lines. The polarized retroreflective design and extended sensing range make it suitable for applications requiring detection of retroreflective targets without false triggering from glossy or reflective backgrounds. Industries including automotive manufacturing, food and beverage processing, logistics, and general factory automation benefit from its reliable on/off switching capability and ease of installation.
Compatibility & Replacements
Compatible With
- Allen-Bradley ControlLogix and CompactLogix PLCs
- Standard industrial automation control systems with 70–264V AC/DC power supply
- Motor starters and relay logic circuits
- Digital input modules (via relay contact closure)
- Any control system accepting SPDT electromechanical relay output
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 42GRU-9202-QD is a Series 9000 PHOTOSWITCH model; earlier or later series variants may have different electrical characteristics or connector types.
Works With
- Allen-Bradley Studio 5000 and RSLogix design environments
- Any discrete digital input monitoring system
- Standard 70–264V AC/DC industrial power supplies
- Retroreflective target assemblies (corner cube or reflective tape recommended)
- Industrial control networks and PLCs with standard discrete I/O
