Overview
The Allen-Bradley 42GRU-9002 is a Series 9000 general-purpose photoelectric sensor engineered for retroreflective object detection in industrial automation applications. This sensor represents a standard, reliable choice for motion control, material handling, and safety-critical detection tasks across manufacturing, packaging, and logistics environments.
Key Features
- Retroreflective Sensing: Detects objects and materials reliably up to 9.14 meters (30 feet) with a standard 76 mm (3 inch) reflector
- Wide Voltage Range: Compatible with 70–264V AC/DC power supplies, reducing voltage inventory and simplifying integration
- SPDT Relay Output: Electromechanical relay contact output ensures simple, dependable on/off switching without additional interface modules
- Visible Red Light Source: 660 nm visible red LED allows straightforward alignment and troubleshooting in the field
- Durable Construction: Industrial-grade design rated for harsh plant floors, dust, and moisture-prone environments
- Standard 2-Meter Cable: 6.5 ft (2 m) 300V cable pre-attached for immediate installation or integration into existing harnesses
Technical Specifications
- Sensing Mode: Retroreflective (requires reflector)
- Sensing Distance: 9.14 m (30 ft) maximum with 76 mm (3 in) reflector
- Operating Voltage: 70–264V AC/DC
- Light Source: Visible red LED (660 nm)
- Output Type: SPDT (Single-Pole, Double-Throw) electromagnetic relay
- Response Time: Standard (On/Off)
- Cable Type: 2 m (6.5 ft) 300V rated
- Weight: 0.44 lbs
- Connector Options: Standard cable or Mini QD (quick-disconnect) connector variants available
- Standards: CCC, KC certified
- Product Family: Series 9000 Photoelectric Sensors
Typical Applications
The 42GRU-9002 is widely deployed in:
- Conveyor line material detection and sorting
- Box and carton presence verification in packaging lines
- Machine guarding and safety interlock circuits
- Part count and production monitoring
- Automated material handling systems
- Factory automation control loops where SPDT relay output is preferred over digital I/O
Compatibility & Replacements
Compatible With
- Allen-Bradley Series 9000 sensor ecosystem
- Any control system accepting 70–264V AC/DC powered SPDT electromechanical relay inputs
- Rockwell Automation PLCs (CompactLogix, ControlLogix, MicroLogix) via standard digital input modules
- Industrial control panels with relay-based logic or discrete input cards
- EtherNet/IP networks when integrated through appropriate I/O interface modules
Replaces / Drop-In Replacement For
- Older Series 9000 retroreflective sensors requiring equivalent 30 ft sensing range and 70–264V AC/DC operation
- Manual mechanical limit switches in object-detection applications
- Verify specific legacy model compatibility with your system integrator before ordering
Works With
- Allen-Bradley CompactLogix and ControlLogix discrete input modules
- Siemens S7-1200/1500 and logo! controllers via standard relay input cards
- Rockwell Studio 5000 (formerly RSLogix 5000) ladder logic programming
- Mitsubishi MELSEC Q-series PLC input modules
- Any relay-input automation control platform
