Fork sensors

The specialist for high-speed applications

Your Benefits

  • Fast response time and fine resolution ensure reliable detection even at very high object speeds
  • Infrared light source provides excellent ambient light immunity
  • User-friendly setting via IO-Link, teach-in button, or plus/minus buttons
  • A wide range of different fork sizes enables flexible installation
  • Stable aluminum housing for use in harsh industrial environments
  • 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


The specialist for high-speed applications

WFnext fork sensors are at work in the detection of labels, marks, double sheets, holes, edges, and various objects. Thanks to the design principle that sees both the sender and receiver integrated in a single housing, no adjustment is necessary. This easy-to-use sensor line includes fork widths between 2 mm and 120 mm with fork depths of 40 mm, 60 mm, and 95 mm. Extremely fast response times and fine resolution means that WFnext fork sensors from SICK can even detect small and flat objects, as well as those traveling at high speeds.

At a glance
  • Infrared light source
  • Simple and precise setting of the switching threshold via IO-Link, teach-in button, or plus/minus buttons
  • Fast response time: 100 μs
  • PNP and NPN switching output
  • Light/dark switching function
  • Stable aluminum 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 width2 mm ... 225 mm
    Fork depth40 mm ... 95 mm
    MDO0.2 mm / 2 mm
    Light source

    LED, infrared, Infrared light

    LED, infrared, Infrared light 1)

    LED, infrared, Infrared light 2)

    Switching frequency

    10 kHz 3)

    15 kHz 3)

    10 kHz 4)

    0.5 kHz 4)

    Response time

    100 µs

    46 µs 5)

    50 µs 5)

    30 µs 5)

    1 ms 5)

    Output functionLight/darkswitching, selectable via button / Light/darkswitching, adjustable via reverse polarity
    Connection type

    Male connector M8, 4-pin

    Cable, 4-wire 0.2 m

    Cable open end 300 mm

    Cable, 4-wire 2 m

    IO-Link functions– / ✔,

    Advanced functions

    High speed counter + decentralized debouncing

    Time measurement + decentralized debouncing

    • 1) Continuous.
    • 2) Pulsating.
    • 3) With light/dark ratio 1:1.
    • 4) With light/dark ratio 1:1, without timer stage.
    • 5) Signal transit time with resistive load.
All technical data can be found accompanying the individual product