Functional Sequence - Roland Double Sheet Detector I100 Manual

System description
3.3

Functional sequence

The transport facility places the sheet between the sensors. The receiving sensor will process the
transmitted sensor signal. According to the preset limits, the respective signal output
(0-sheet, 1-sheet, 2-sheet) will be set activated.
If the output signal for 2-sheet is active, the PLC stops the material transport for removal of the
double sheet.
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Double Sheet Detector R100 I100
"Active"means, that the signalling output will switch. In case that the
Note!
supply voltage fails, all signalling outputs (0-, 1-, 2-sheet) will become
inactive.
Then the PLC must stop the material transport.
Usually, the signalling outputs of the control unit will be used for
Caution!
stopping the material transport facilities and / or machines in case of
double sheet.
As soon as the double sheet is removed from the sensor(s), the
signalling outputs instantly switch back to normal condition (0-sheet /
1-sheet).
Suitable control measures must ensure that the previously stopped
material transport facilities and / or machines cannot automatically
restart and thus create hazardous situations.
Manual
for pairs of sensors
B0003308 / 1.4 / 13.02.2013