WAGO-I/O-SYSTEM 750
Process Image
63
750-494 3-Phase Power Measurement Module
Manual
Version 1.2.0
5.6
Examples of Calculating the Measured Values from
the process values
The format of the measured values with sign (Int16) is the two's complement.
Generally, use the following equation to calculate the measured values from the
process values:
Measured value = Process value x Scaling factor PI
The scaling factors are defined in section „Collections of Measured values“.
Following examples of calculating:
Voltage
1A-varints
5A-variants
Process value
0x000007D0 (2000)
0x00003D76 (15734)
Scaling factor PI
0.01V
0.01V
Equation
Measured value = Process value x Scaling factor PI
Measured value
20.00 V
157.34 V
Frequency
1A-varints
5A-variants
Process value
0x0000C3B8 (50104)
0x0000EB9C (60316)
Scaling factor PI
0.001Hz
0.001Hz
Equation
Measured value = Process value x Scaling factor PI
Measured value
50.10 Hz
60.32 Hz
phi
1A-varints
5A-variants
Process value
0x 00004E3 (1251)
0x0000226E (8814)
Scaling factor PI
0.01 °
0.01 °
Equation
Measured value = Process value x Scaling factor PI
Measured value
12.51 °
88.14 °
cos phi
1A-varints
5A-variants
Process value
0x FFFFFFB2 (-78)
0x00000059 (89)
Scaling factor PI
0.01
0.01
Equation
Measured value = Process value x Scaling factor PI
Measured value
-0.78
0.89