Overview
The Banner SM312FQD is a MINI-BEAM infrared 880 nm glass fiber optic sensor with 10-30 V dc input and bipolar 1 NPN; 1 PNP output. The sensor features reinforced PBT thermoplastic polyester housing, totally encapsulated with o-ring sealing, acrylic lenses and stainless steel screw construction. The QD option includes a quick disconnect 4-conductor DC connector for straightforward field installation and removal.
Key Features
- Usable in opposed, retro reflective and diffuse fiber optic modes with Banner glass fiber optic assemblies
- Switch-selectable for light operate or dark operate
- Response time of 1ms with pulsing LED signal strength indicator
- NEMA 4X and IEC IP67 enclosure ratings for wet and corrosive environments
- Interchangeable with 18-mm barrel type photoelectrics
- Both sourcing and sinking outputs with 1mSec response
Technical Specifications
The SM312FQD offers compact, threaded-nose construction ideal for machine vision and material handling applications:
Typical Applications
- Registration mark detection, carton on conveyor, clear film web break, and baggage handling
- Clear plastic film and web detection in opposed mode
- Color and contrast detection in convergent and diffuse modes
- Fluid level monitoring in transparent containers
- Package presence and orientation sensing
Compatibility & Replacements
Compatible With
- Banner glass fiber optic cable assemblies (IT23S, BT23S and others)
- Standard M12 4-pin micro DC connector systems
- Light and dark operate configurations
- All fiber optic sensing modes: opposed, retro-reflective, convergent, diffuse
Replaces / Drop-In Replacement For
- Banner SM312 series sensors with different connection types
- 18 mm barrel type photoelectric sensors with equivalent sensing requirements
Works With
- Banner fiber optic cable assemblies and accessories
- Standard M12 quick disconnect cordsets (sold separately)
- Light operate and dark operate modes via switch selection
- PLC and controller inputs compatible with NPN/PNP sourcing and sinking outputs




