Overview
The Allen-Bradley 42GNU-9220-QD1 is a SmartSight 9000 series photoelectric sensor designed for DeviceNet industrial automation networks. This polarized retroreflective sensor integrates self-teach operation and dual diagnostic outputs for reliable object detection in production and material handling applications. The unit features a mini 5-pin quick-disconnect connector for quick-change installation and operates within the 11–25V DC range over DeviceNet protocol.
Key Features
- Self-teach operation — automatically adjusts sensitivity to distinguish target from background, eliminating manual potentiometer adjustment
- Dual diagnostic outputs — independent margin and motion-detect indicators for unstable sensing conditions; static or dynamic mode selectable
- Polarized retroreflective detection — 4.8 m (16 ft) maximum sensing distance with 1.5° field of view for clean target discrimination
- Mini 5-pin quick-disconnect — quick-change connector enables rapid installation and replacement without rewiring
- DeviceNet communication — native protocol support for direct integration into DeviceNet control networks
Technical Specifications
- Product Type: Photoelectric Sensor, Polarized Retroreflective
- Operating Voltage: 11–25V DC DeviceNet
- Current Output: 75 mA (max)
- Sensing Distance (Max): 4.8 m (16 ft) with reflector
- Field of View: 1.5°
- Light Source: Visible Red (660 nm LED)
- Connector Type: 5-pin mini quick-disconnect
- Communication Protocol: DeviceNet
- Certifications: UL, CUL, CE, CSA, CCC, C-TICK, KC
- Series: SmartSight 9000 (PHOTOSWITCH®)
Typical Applications
The 42GNU-9220-QD1 is commonly deployed in:
- Automated assembly lines and conveyor systems requiring precise object detection
- Packaging and labeling machinery with DeviceNet-enabled controllers
- Material handling and sorting applications where retroreflective sensing reduces false triggers
- Light-curtain and safety-monitored equipment relying on networked sensor feedback
- Industrial automation retrofits maintaining legacy DeviceNet infrastructure
Compatibility & Replacements
Compatible With
- Allen-Bradley ControlLogix and CompactLogix controllers with DeviceNet scanner modules
- Any DeviceNet master or gateway supporting standard photoelectric sensor protocols
- Studio 5000 (Logix Designer) and RSLogix 5000 for DeviceNet configuration and diagnostics
Replaces / Drop-In Replacement For
- 42GNU-9220-QD (micro quick-disconnect variant; connector type differs — verify mechanical fit)
- Earlier PHOTOSWITCH DeviceNet sensors in the Series 9000 family requiring manual sensitivity adjustment
Works With
- DeviceNet: native EDS file support for CANopen-based communication
- Allen-Bradley TwinCAT and RSLogix platforms: full diagnostic integration and parameter tuning via Studio 5000
- Third-party DeviceNet gateways: compatible with any certified DeviceNet master (ODVA certified)
