System Description; Introduction; Structure And Measuring Principle - Roland Double Sheet Detector I100 Manual

B0003308 / 1.4 /
13.02.2013
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System description

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3.1

Introduction

When automatically feeding sheets from a stack to a processing machine, it can unintentionally
happen that more than one sheet is picked up and transported. This can result in disturbances of
the machine run, damage of tools, expensive repair measures and loss of production. The A100
double sheet detectors can reliably prevent from such incidents by measuring the thickness of
every sheet from both sides with a pair of sensors.
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3.2

Structure and measuring principle

A system mainly consists of the control unit, the sensor and the sensor cable.
For performing the measurement, the transporting facility of the machine must move the sheet
between the sensors. During the measurement the sensors do not contact the sheet.
The transmitter emits an alternating electrical field, the receiver on the other side of the sheet
electronically detects the signal attenuated by the sheet. The receiver signal is processed in the
control unit and made available to the machine control as switching signals.
The main influencing factors for the measurement are the material properties of sheets, the sensor
bracket (holder), the sensor distance and the neighbouring metal parts.
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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 R100 I100
Caution! The system is not suited for applications
of personal protection!
Manual
for pairs of sensors
System description
17