Overview
The Allen-Bradley 40BY1-4000 is a Photoswitch LED light source module designed as a core component of the Series 4000 photoelectric sensor family. This two-wire light source works in conjunction with the 47BU1-4000 receiver module to form a complete 2-piece photoelectric beam-break detection system. When the continuous LED beam is interrupted by an object or material, the system triggers an immediate state change to execute user-programmed operations, making it ideal for machine automation, process control, and material handling applications.
Key Features
- Continuous LED beam emission for reliable object detection
- Compatible with Type 22DJ9 Model 4000 and Model 500 photoswitch controllers
- Works with 47BU1-4000 receiver module for complete 2-piece detection system
- Simple 2-wire installation design for quick integration
- Suitable for industrial and commercial automation environments
- Series B module with proven Allen-Bradley quality and reliability
Technical Specifications
Specifications for the Allen-Bradley 40BY1-4000 are as follows:
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Model: 40BY1-4000
- Series: 4000 (Series B)
- Function: LED Light Source (Photoswitch)
- Beam Type: Continuous LED
- Paired Receiver: 47BU1-4000
- Installation: 2-conductor wiring
- UPC: 662073854425
- Weight: 0.165 lb
Typical Applications
The Allen-Bradley 40BY1-4000 light source is used in a variety of industrial automation scenarios, including:
- Object presence and absence detection on conveyor belts
- Positional accuracy verification in manufacturing processes
- Process monitoring and control in production lines
- Material alignment and registration systems
- Automated part counting and sorting applications
- High-speed beam-interrupt sensing in machine tool environments
Compatibility & Replacements
Compatible With
- Type 22DJ9 Model 4000 Photoswitch controllers
- Type 22DJ9 Model 500 Photoswitch controllers
- Series 4000 LED timing and control modules
- 47BU1-4000 receiver module
- Allen-Bradley Series 4000 photoelectric sensor family
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or Rockwell Automation technical support before ordering replacement units. The 40BY1-4000 is a light source component; check your existing receiver model for exact compatibility.
Works With
- 22DJ3-4000 photoelectric on/off control modules
- 22DJ9-4000 time-delay LED control modules
- 22DJ9-4001 time-delay modules with dark/light energized modes
- Standard industrial 2-conductor wiring and control cabinets
- Allen-Bradley ControlLogix and CompactLogix systems (via external sensor inputs)












