Overview
The Allen-Bradley 42BC-B1LBAN-T4 is a long-range background suppression (BGS) sensor designed for reliable object detection in industrial automation environments. This infrared photoswitch features manually adjustable sensitivity and operates across the 12-24V DC range, making it suitable for most PLC and control systems. The side through-hole mounting design provides flexible installation in compact spaces.
Key Features
- Background Suppression Technology: Eliminates false triggers from reflective surfaces behind the target object
- Dual Output Modes: NPN & PNP with SCP, configurable to match sink or source control logic
- Light/Dark Selectable: Choose whether object presence triggers ON or OFF state
- Extended Sensing Range: 2 M (6.6FT) range for detection at distance
- Infrared Light Source: Infrared Light (IR) sensor technology for consistent performance across ambient lighting conditions
- Compact Form Factor: Slim housing for integration into tight mounting spaces
Technical Specifications
- Input Voltage: 12-24 VDC
- Output Current: 100 mA
- Sensing Range: 2 M (6.6FT)
- Output Type: NPN & PNP W/ SCP
- Mounting Style: Side through hole
- Connection: 4 screw terminal
- Light Source: Infrared
- Conductor Size: 16 AWG
- Enclosure Material: Plastic
- Weight: 0.40 lbs
- Certifications: CCC, CE, CUL, KC, UL
Typical Applications
The Allen-Bradley 42BC-B1LBAN-T4 is widely used in manufacturing and assembly automation for:
- Part presence detection on conveyor systems
- Object counting in production workflows
- Position verification in packaging lines
- Proximity sensing where background reflections must be eliminated
- Machine safety interlocks and presence confirmation
- General-purpose industrial object detection at extended ranges
Compatibility & Replacements
Compatible With
- Allen-Bradley PLCs (CompactLogix, MicroLogix, ControlLogix)
- Siemens S7 systems with appropriate signal conditioning
- Mitsubishi and Omron controllers supporting 12-24V DC discrete inputs
- Any industrial control system with NPN or PNP input modules
- Standard 24V DC power supplies and industrial control architectures
Replaces / Drop-In Replacement For
- Allen-Bradley 42BC-B1LBAL-T4 (1m range variant)
- Other Allen-Bradley 42BC-series long-range background suppression sensors
- Standard infrared proximity sensors requiring 2-meter detection capability
Works With
- Studio 5000 Logix Designer programming environment
- Allen-Bradley CompactLogix and MicroLogix input modules
- 24V DC industrial relay logic and control circuits
- Discrete I/O cards from Rockwell Automation and compatible OEMs
- PROFINET, EtherNet/IP, and standard hardwired control schemas
