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Application example

Reliably measuring stack heights of sheets, load carriers and components

Titelbild

The Task

In production and assembly processes, the correct stacking height of components must be checked reliably. The aim is to ensure that a defined number of sheets, load carriers or components with a known individual height are stacked correctly before the next process step is enabled.

The Challenge

The height differences to be detected are very small – often only a few millimeters per layer. At the same time, the surfaces of the parts vary (metallic, matt, coated), the installation space is limited and the sensor must provide reliable measured values at a defined working distance. This combination makes classic switching or position sensing inadequate and a genuine, high-precision distance measurement is required.

Our Solution

An optical distance sensor, such as the DTECT® Distance FT 55-RLAM, measures the exact distance to the component and uses this to determine the stack height. Thanks to the high resolution and repeatability, even the smallest changes in height can be reliably distinguished – for example, whether a sheet is missing or there are too many. Depending on the system concept, variants with an analogue output signal or IO-Link measured value transmission are available. This means that the measured height value can be transferred directly to the control system, evaluated and documented.

Your Advantages 

  • Reliable detection of the smallest height differences (≈ 1 mm) for maximum process reliability
  • High reproducibility, almost independent of the material and surface finish
  • Simple parameter configuration and integration into existing systems
  • Reduced commissioning times 

Recommended products for this application

FT 25-RLAP

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