Overview
The Allen-Bradley 45LST-1LEA2-P4 is an industrial-grade photoelectric optical fork sensor engineered for reliable detection in automation applications. Part of the Bulletin 45LST series, this metal fork sensor excels at detecting small parts passing through the fork opening, making it ideal for packaging, material handling, and conveyor line integration. Its infrared LED light source and 15 mm sensing gap enable dependable target detection without requiring reflectors.
Key Features
- Infrared LED light source for consistent performance across varying ambient lighting
- 15 mm sensing gap (fork width) optimized for small-to-medium part detection
- NPN/PNP selectable output for flexible circuit integration
- IP65 metal enclosure for durability in industrial environments
- Side through-hole mounting configuration for compact installation
- 4-pin Pico M8 threaded quick-disconnect for fast wiring
Technical Specifications
- Input Voltage: 10–30 VDC
- Output Current: 40 mA maximum
- Circuit Type: NPN/PNP selectable
- Sensing Gap: 15 mm
- Response Time: 30 µs to 1 ms (switchable)
- Light Source: Infrared LED (non-pulsed or pulsed mode)
- Connector: 4-pin Pico M8 threaded, DC quick-disconnect
- Enclosure Rating: IP65 metal housing
- Mounting Type: Side through-hole, manually adjustable
- Operating Temperature: –4°F to 140°F (–20°C to 60°C)
- Certifications: CE, CUL, KC, UL
Typical Applications
The 45LST-1LEA2-P4 excels in industrial automation environments including:
- Conveyor line object detection and jam prevention
- Packaging machinery for part counting and positioning
- Assembly line part presence verification
- Small parts sorting and identification
- Motor-driven machine load detection
Compatibility & Replacements
Compatible With
- Allen-Bradley control systems and PLCs
- Rockwell Automation industrial controllers
- Any DC 10–30 V automation circuit with NPN or PNP input modules
- Standard M8 connector-based sensor networks
- Industrial conveyors and packaging equipment
Replaces / Drop-In Replacement For
- Direct replacement for OEM applications requiring 15 mm fork sensing gap
- Verify compatibility with your system integrator before ordering
Works With
- Allen-Bradley Studio 5000 and LogixPro programming environments
- Rockwell Automation INTEGRATED ARCHITECTUREâ„¢ strategy
- Standard 24 VDC industrial power supplies
- Any system supporting M8 DC micro-connectors and NPN/PNP discrete inputs
