Siemens SIRIUS 3RW55 Equipment Manual page 204

Functions
8.13 Outputs
Factors for calculating the output measured value
Measured value
• Phase current I L1 (%)
• Phase current I L2 (%)
• Phase current I L3 (%)
• Phase current average (%)
• Motor temperature rise
• Switching element heating
• Line voltage U L1-L2 (rms)
• Line voltage U L2-L3 (rms)
• Line voltage U L3-L1 (rms)
• Phase current I L1 (rms)
• Phase current I L2 (rms)
• Phase current I L3 (rms)
• Phase current average (rms)
• Power factor L1...3
• Active power
• Active energy import (total)
Example of calculating the parameters for the range start value and range end value
In this example, a pointer instrument indicates the measured value "Phase current I L1 (rms)"
50 A (start value) at the left stop and 150 A (end value) at the right stop. You can divide the scale
of the pointer instrument between the left stop and the right stop, depending on the desired
resolution.
The following measured values and parameters are given as examples at this point:
• Output signal type: 4 ... 20 mA
• Measured value: Phase current I L1 (rms)
• Range start value = desired start value (e.g. 50 A) / factor of the measured value in question
• Range end value = desired end value (e.g. 150 A) / factor of the measured value in question
Procedure
1. Parameterize the output signal type, e.g. 4 ... 20 mA.
2. Select a measured value, e.g.: Phase current I L1 (rms)
3. Parameterize the range start value and the range end value taking the relevant factor into
account:
– Range start value (e.g. 50 A / 0.01 A) → 5 000
– Range end value (e.g. 150 A / 0.01 A) → 15 000
204
Factor Unit
3.125 %
1 %
1 %
0.1 V
0.01 A
0.01 -
0.0001 kW
1 Wh
Range of values
0 ... 796.9%
0 ... 1 000%
0 ... 250%
0 ... 1 500 V
0 ... 20 000 A
0 ... 1
0 ... 2 147.483 kW
0 ... 3.4 x 10 38 Wh
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006
Coding
0 ... 255
0 ... 1 000
0 ... 250
0 ... 15 000
0 ... 2 000 000
0 ... 100
0 ... 21 474 830
0 ... 3.4 x 10 38