Fork sensors

Precise detection for optimum label detection

Your Benefits

  • Flexible and simple mounting directly on the edge of a label dispenser ensures a high level of accuracy in the process
  • Small housing allows simple installation even where space is limited
  • User-friendly adjustment allows easy and quick commissioning
  • Fast response times enable precise detection – even at very high track speeds
  • Thanks to IO-Link or external teach-in, the switching threshold can be adapted while the process is running, increasing process reliability
  • Easy to access data from the PLC via IO-Link


Precise detection for optimum label detection

The slim, forked shape of the WFS has been specially developed for the requirements of the labeling process. The design allows the sensor to be mounted directly on the edge of a label dispenser. Difficulty in detecting the label gap is finally eliminated – the sensor's switching threshold can be taught-in while the label strip is running. This sophisticated operating concept means the sensor can be adjusted to different labels quickly, easily, and reliably. The fast response time guarantees exceptional repeat accuracy.

At a glance
  • Housing with slim forked shape
  • Simple and precise setting of the switching threshold via IO-Link, teach-in button, or plus/minus buttons
  • Light/dark switching function
  • Fast response time: 50 μs
  • PNP or NPN switching output
  • Plastic housing with IP 65 enclosure rating
  • Smart sensor with integrated IO-Link interface


Technical overview

  • Technical data overview

    Technical data overview

    Functional principleOptical detection principle
    Fork width3 mm
    Fork depth42 mm
    MDOGap between Labels / Size of labels: 2 mm 1)
    Light sourceLED, infrared, Infrared light
    Switching frequency

    10 kHz 2)

    15 kHz 3)

    Response time

    50 µs 4)

    46 µs 4)

    Connection type

    Male connector M8, 4-pin

    Cable, 4-wire 2 m

    IO-Link functions– / ✔,

    Advanced functions

    Time measurement + decentralized debouncing

    High speed counter + decentralized debouncing

    • 1) Depends on the label thickness.
    • 2) With light/dark ratio 1:1.
    • 3) With light/dark ratio 1:1, typical, during teach-in 6 kHz.
    • 4) Signal transit time with resistive load.
All technical data can be found accompanying the individual product