System Description; Measurement Principle - Roland udk20 Manual

B0048991 / Rev. 1.3
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System description

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Flexible manufacturing systems in sheet metal processing require automated and reliable double
sheet control systems in order to safeguard presses and other processing machinery against
damage due to multiple sheets. This applies not only to steel but also to aluminium and other non-
ferrous metals as well as non-magnetic stainless-steel (austenite), materials as they are
increasingly being used in automotive applications. In addition, the production of so-called
"Tailor Welded Blanks" (TWB) has created complex manufacturing systems with special
requirements regarding automated double sheet control systems.
The Double Sheet Detector UDK20 was specifically developed for this technical environment. The
special feature of the system is the ability to monitor ferrous and non-ferrous materials with one
sensor only - the PW42AGS.
A system for one measuring point consists of the following three components:
•
Control unit
•
Sensor PW42AGS for ferrous and non-ferrous materials
•
Sensor cable
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3.1

Measurement principle

The Double Sheet Detector UDK20 combines the electromagnetic and eddy current measurement
principles. It monitors the sheet thickness from one side only and in the case of steel does exert
forces only during measurement. A change of the sheet thickness causes a change of the
inductance. The control unit calculates the sheet thickness resulting from this change. Based on
the predetermined thresholds 0-sheet, 1-sheet, or 2-sheets of output signals are generated.
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ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone +49 (0)7236-9392-0 · Fax +49 (0)7236-9392-33
Double Sheet Detector R1000 series UDK20
Manual
System description
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