Technical data

Manual
Double Sheet Detector R1000 series E20
B0046991 / Rev. 1.6
Technical data
ROLAND ELECTRONIC GmbH · Otto-Maurer-Str. 17 · DE 75210 Keltern · Phone [phone] · Fax [phone]
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2.4 Sensor performance data (Measuring time)
In the following diagram the response time of the control unit for measurement is shown depending
in sensor type and number of sensors activated by the program. In addition the response time
depends on the selected system parameter “measure”, the actual sheet thickness, the nominal
sheet thickness and the upper limit (up).
System parameter „measure“
• „fast“
The actual response time depends on the measured sheet thickness, the nominal thickness
and the upper limit (up).
The maximum response time is limited by the nominal thickness and the upper limit (see
diagram and example).
Advantage: maximum response time is low.
Disadvantage: In case of measuring results larger than the double sheet threshold, the text
“2-sheet” is issued instead of the actual measurement value.
• „normal“
The actual response time depends on the measured sheet thickness.
The maximum response time corresponds to the maximum sheet thickness.
Example 1:
• System parameter “Measure: fast”
• P75VGS sensor
• Measurement with one sensor
• Nominal thickness 1.0 mm = 100%
• upper limit (UP) 120% (=1.2 mm)
Actual sheet thickness = 1 mm actual response time = 120 ms
Actual sheet thickness = 2 x 1 mm actual response time = 130 ms
Actual sheet thickness = 7 x 1 mm (sensor on stack) actual response time = 130 ms
The maximum response time is 130 ms (with “up“ = 120%). This means that after the signal "measurement start" was issued
(max. 30ms), it will take 130 ms until the result of the measurement is available as output signal (with “up“ =120%).
Example 2:
• System parameter “Measure: normal”
• P75VGS sensor
• Measurement with one sensor
• Nominal thickness 1.0 mm = 100%
• upper limit (UP) 120% (=1.2 mm)
Actual sheet thickness = 1 mm actual response time = 120 ms
Actual sheet thickness = 2 x 1 mm actual response time = 160 ms
Actual sheet thickness = 7 x 1 mm (sensor on stack) actual response time = 400 ms
The maximum response time is 400 ms (with “up“ = 120%). This means that after the signal "measurement start" was issued
(max. 30ms), it will take 400 ms until the result of the measurement is available as output signal (with “up“ =120%).
Note The advantage in measuring time is significant, if the thickness of material
is considerably lower than the measuring range of the sensor.