Overview
The Allen-Bradley 42GRF-9002-QD is a photoelectric fiber optic sensor from the 9000 Series lineup. This large aperture fiber optic unit delivers infrared detection with SPDT electromagnetic relay output, making it suitable for a wide range of industrial automation and motion control applications where reliable object and level detection is critical.
Key Features
- Large aperture fiber optic sensing with infrared technology
- SPDT (Single Pole Double Throw) electromagnetic relay output
- Wide voltage range: 70-264V AC/DC input
- Standard on/off switching logic
- Mini Quick-Disconnect (QD) connector interface
- 2-meter integrated cable assembly
- 9000 Series design for durability and repeatability
Technical Specifications
- Input Voltage: 70-264V AC/DC
- Output: SPDT electromagnetic relay, 2A @ 132VAC, 1A @ 264VAC, 1A @ 150VDC
- Sensing Type: Large Aperture Fiber Optic (Infrared)
- Connector: 4-Pin DC Mini Quick-Disconnect (QD)
- Cable Length: 2 meters
- Switching Logic: Standard (On/Off)
- Series: 9000 Photoelectric Sensor
- Power Consumption: 4VA
Typical Applications
The 42GRF-9002-QD is widely used in manufacturing, packaging, and material handling systems. Common applications include:
- Part presence detection and counting
- Object alignment and positioning verification
- Level sensing in bins and containers
- Conveyor line monitoring
- Machine tool and automation control
- Quality assurance and inspection systems
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix controllers
- Siemens S7-1200 and S7-1500 PLC systems via relay output
- Mitsubishi, Omron, and other industrial PLCs with AC/DC relay inputs
- Standard industrial control systems with 70-264V AC/DC power supply
- EtherNet/IP enabled automation networks (when paired with appropriate gateway modules)
Replaces / Drop-In Replacement For
- Previous versions of Allen-Bradley 42GRF fiber optic sensors
- Similar large aperture photoelectric sensors from competitive manufacturers (verify pinout and cable length before substitution)
Works With
- Rockwell Automation Studio 5000 and RSLogix 5000 programming platforms
- Siemens TIA Portal (when integrated via standard AC/DC inputs)
- Standard industrial relay control circuits and logic
- Mini Quick-Disconnect (QD) mating connectors and cable assemblies










