Roland R1000 Series Manual page 21

B0046191 / Rev. 1.12
Double Sheet thresholds above 120% reduce the performance of the system with regard to air
gaps between the sheets and increase the systems reaction time according to the diagram.
Air gaps influence the performance negatively because air has - in contrast to steel - a high
resistance to the magnetic flux. Therefore, air gaps reduce the performance of the system
considerably (see chapter "3.1 Measuring principle").
For reliable double sheet monitoring there should be no air gap between sheet and sensor and also
between the sheets. The most reliable double sheet recognition results, if no air gap exists. These
aspects should be specifically observed when mounting the sensors.
The influence of air gaps are described in the following diagrams.
Max. air gap between sensor and first sheet (1st air gap)
3,0
2,8
2,6
2,4
P75VGS
2,2
2,0
1,8
1,6
1,4
1,2
P42AGS
1,0
0,8
0,6
0,4
P30GS
0,2
Max. air gap between first and second sheet (2nd air gap)
11
P75VGS
10
9
8
7
6
P42AGS
5
4
3
2
P30GS
1
The data apply for a set upper limit of 120%.
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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 E20
with integrated fieldbus interface
Attention The performance data of both diagrams cannot be combined.
P128GPPS
2 3 4 5
P128GPPS
2 3 4 5
Manual
6 7 8 9
6 7 8 9
Technical data
1.
10 11 12 Sheet thickness
[mm]
2.
10 11 12 Sheet thickness
[mm]
21