Overview
The Allen-Bradley 42SRU-6002 is a Series 6000 compact photoswitch photoelectric sensor engineered for retroreflective sensing applications in industrial automation. This sensor detects retroreflective targets and materials, making it ideal for packaging, material handling, and assembly line automation where accurate object presence verification is critical. The 42SRU-6002 operates in Light Operate mode, activating output when the infrared beam reflects back from a retroreflective target.
Key Features
- Retroreflective sensing mode for reliable target detection
- Dual output configuration: both NPN (sink) and PNP (source) support
- Extended 9-meter (30-foot) maximum sensing distance
- Fast 1 millisecond response time for high-speed production lines
- Compact design with 3-meter cable and 4-pin DC Micro QD connector
- Light Operate mode for standard detection workflows
Technical Specifications
- Operating Voltage: 10–30V DC
- Output Current: 200mA maximum (NPN/PNP)
- Sensing Mode: Retroreflective
- Maximum Sensing Distance: 9 meters (30 feet)
- Response Time: 1 millisecond
- Leakage Current: 1 microampere (µA)
- Operating Mode: Light Operate
- Sensing Beam: Infrared (IR)
- Connection Type: 3-meter cable with 4-pin DC Micro QD connector
- Output Type: Configurable NPN and PNP
Typical Applications
- Automated packaging and carton detection
- Assembly line presence verification
- Conveyor system part counting and position sensing
- Bottle and container detection in beverage and food processing
- Material handling equipment control and positioning
- Robot gripper or actuator triggering in manufacturing cells
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix PLCs
- Siemens S7-1200 and S7-1500 systems (via standard 10-30V DC input modules)
- Omron NX and NJ series controllers
- Mitsubishi MELSEC iQ-F and iQ-R PLCs
- Schneider Electric Modicon M241 and M251 controllers
- Any industrial controller with 10-30V DC discrete input capacity
Replaces / Drop-In Replacement For
- Allen-Bradley 42SRU-6002 Series B (backward compatible)
- Allen-Bradley 42AF-series photoelectric sensors (with wiring reconfiguration)
- Generic retroreflective photoswitch sensors in the 10-30V DC range
Works With
- Studio 5000 / RSLogix 5000 (discrete I/O configuration)
- TIA Portal (Siemens)
- Sysmac Studio (Omron)
- GX Works / GX Developer (Mitsubishi)
- EcoStruxure Machine Expert (Schneider Electric)
- EtherNet/IP and standard Ethernet-based discrete I/O modules
