Sensors for factory automation hero

FX-311 photoelectric sensor

FX-311 - advanced manual setting fibre sensor based on FX-301.

FX-311 - advanced manual setting fibre sensor based on FX-301

The original SUNX optical technology developed for the FX-301 digital fibre sensor, including its benefits of simple maintenance, reduced wiring and easy installation, is taken a step further with FX-311. FX-311 incorporates technology to handle every major concern and deliver superior performance for a variety of on-site requirements.


  • Long-range sensing made possible with built-in optical lens
  • Response times 0.25/2ms selectable
  • OFF-delay timer
  • 12-turn potentiometer with visible indicator
  • Close mounting is possible for up to four fibre heads
  • Supply voltage via only one cable for up to 16 amplifiers
  • Reduced intensity mode for transparent objects
  • Wide range of fibre optical cables are available
  • Optional: Up to 16 I/O devices can be connected at once using MIL connectors (SC)


  • PLC connection system SC
  • Main and sub cables (1 / 2 / 5m)

Product Finder

Use the Product Finder to find the best product for you

product finder

Find the optimal product for your project by selecting attributes and filter criteria

Go to Product Finder

Typical applications

FX-311 applications
  • Detecting transparent PET bottles: The green LED type is ideal for stably sensing objects such as transparent bottles which yield only small amounts of light fluctuation.
  • Register mark detection: The blue LED type can accurately sense yellow marks on white backgrounds that are difficult to sense using the red LED type.