Beckhoff EL3632, Документация

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Commissioning
EL3632 130 Version: 2.8
Fig. 5: Data flow
Vendor calibration, index 0x80n0:0B [ } 132]
The vendor calibration is enabled via index 0x80n0:0B [ } 132] . Parameterization takes place via the indices
• 0x80nF:01 [
}
133] offset (manufacturer compensation)
• 0x80nF:02 [
}
133] gain (manufacturer compensation)
Y
H
= (X
ADC
- B
K
) * A
K
Measured value following manufacturer calibration (corresponds to X
ADC
if index
0x80n0:0B [
}
132] is inactive)
User calibration, index 0x80n0:0A [ } 132]
The user calibration is enabled via index 0x80n0:0A [
}
132] . Parameterization takes place via the indices
• 0x80n0:17 [
}
132] User calibration offset
• 0x80n0:18 [
}
132] User gain compensation
Y
A
= (Y
H
- B
W
) * A
W
Measured value following user calibration (corresponds to Y
H
if index 0x80n0:0A
[
}
132] is inactive)
Active offset adjustment
If the function "Active offset adjustment" is active the offset values are not used. Instead, a dynamically
calculated offset is subtracted.
Example interpretation
Sample: A sensor with a sensitivity S of 100 mV / g (10.2 mV/(m/s^2) ) is connected to a synchronized
EL3632/EP3632 (15-bit reso sign, +/- 5 V). In the process data an amplitude of 1507 is measured.
a = Y
A
* 5 V / ( 2^15 * S )
a = 1507 * 5 V / ( 2^15 * 0.1 V/ g )
a = 2.3 g
a = 2.3 g * 9.81 (m/s^2) / g
a = 22.5 m/s^2
Conversion of process data value Y
A
to acceleration a.
Y
A
= 2^15 / 5 V * S * a
Y
A
= 2^15 / 5 V * 0.1 V/g * 2.3 g
Y
A
= 1507
Conversion of acceleration g to process data value Y
A
.
Sensor connection
The supply current for the sensors is configurable. With 8 mA the vertical (standard) installation position of
the terminal must be ensured. The smallest possible supply current should be set, depending on the sensor
and cable length.