Siemens SIRIUS 3RW55 - Page 204

Factors for calculating the output measured value
Measured value Factor Unit Range of values Coding
• Phase current I L1 (%)
• Phase current I L2 (%)
• Phase current I L3 (%)
• Phase current average (%)
3.125 % 0 … 796.9% 0 ... 255
• Motor temperature rise
1 % 0 … 1 000% 0 ... 1 000
• Switching element heating
1 % 0 … 250% 0 ... 250
• Line voltage U L1-L2 (rms)
• Line voltage U L2-L3 (rms)
• Line voltage U L3-L1 (rms)
0.1 V 0 … 1 500 V 0 ... 15 000
• Phase current I L1 (rms)
• Phase current I L2 (rms)
• Phase current I L3 (rms)
• Phase current average (rms)
0.01 A 0 … 20 000 A 0 ... 2 000 000
• Power factor L1...3
0.01 - 0 … 1 0 ... 100
• Active power
0.0001 kW 0 … 2 147.483 kW 0 ... 21 474 830
• Active energy import (total)
1 Wh 0 ... 3.4 x 10
38
Wh 0 ... 3.4 x 10
38
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
Functions
8.13 Outputs
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
204 Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006