Overview
The Allen-Bradley 42GRU-9203-QD1 is a Series 9000 PHOTOSWITCH photoelectric sensor designed for standard on/off detection in polarized retroreflective applications. This sensor combines a robust infrared light source with solid-state switching for dependable performance in industrial automation, packaging, material handling, and assembly-line environments.
Key Features
- Polarized retroreflective detection mode for reliable object sensing with reflective targets
- Long sensing range of 4.87 m (16 ft) reduces the need for multiple sensors
- Wide voltage range: 45–264 V DC / 40–264 V AC for flexible power supply integration
- Solid-state isolated N.O. (normally open) output with 1000 mA load capacity
- 4-pin AC Micro (M12) quick-disconnect connector for fast installation and field replacement
- Infrared light source minimizes false triggers from ambient lighting
Technical Specifications
- Detection Mode: Polarized Retroreflective
- Operating Voltage: 45–264 V DC / 40–264 V AC
- Light Source: Infrared (IR)
- Output: Solid State Isolated N.O. (Normally Open)
- Output Current: 1000 mA maximum
- Sensing Range: 4.87 m (16 ft)
- Connector Type: 4-pin AC Micro (M12) integral quick-disconnect
- Series: Series 9000 / PHOTOSWITCH
Typical Applications
The Allen-Bradley 42GRU-9203-QD1 is widely used in:
- Conveyor line object detection and sorting
- Packaging and labeling machinery
- Assembly line part presence verification
- Material handling and logistics automation
- Light curtain and interlock safety circuits
- Automated door and gate control systems
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix PLC systems with analog or digital input modules
- Any industrial control system accepting 1000 mA solid-state N.O. switch output
- Standard 24–240 V AC/DC industrial control networks
- EtherNet/IP and Modbus RTU ecosystems via compatible gateway modules
Replaces / Drop-In Replacement For
The 42GRU-9203-QD1 with M12 integral quick-disconnect is the direct successor to the 42GRU-9203-QD (mini quick-disconnect version). Verify connector type and voltage rating before substitution.
Works With
- Studio 5000 and RSLogix 5000 (configuration via analog/discrete input mapping)
- Control system safety interlocks and emergency stop circuits
- 24 VDC PLC discrete input modules with pull-up resistors
- Industrial relay circuits and electromechanical control systems
