Beckhoff EL3632 Documentation page 130

Commissioning
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 = (X - B ) * A
H ADC K K
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 = (Y - B ) * A
A H W W
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 resolution + sign, +/- 5 V). In the process data an amplitude of 1507 is measured.
a = Y * 5 V / ( 2^15 * S )
A
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
Y = 2^15 / 5 V * S * a
A
Y = 2^15 / 5 V * 0.1 V/g * 2.3 g
A
Y = 1507
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.
130
Measured value following manufacturer calibration (corresponds to X
0x80n0:0B [} 132] is inactive)
Measured value following user calibration (corresponds to Y
[} 132] is inactive)
Conversion of process data value Y
Conversion of acceleration g to process data value Y
Version: 2.8
ADC
if index 0x80n0:0A
H
to acceleration a.
A
.
A
if index
EL3632