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9 Operation at Use of a PC
9.3 Configuration of the Device
231
SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A6, Edition 06.2019
The default values of thresholds are defined and assigned to the measured values as shown in Table 2-3. You
can change the assignment in the mapping file, see Figure 9-67.
The threshold processing uses a combination of the following methods:
•
Fixed
If the difference percentage is larger than the configured threshold (in positive direction or negative
direction), a measured value is immediately transmitted.
The difference percentage = (Current value - last transmitted value)/last transmitted value
•
Integrated
If the rolling difference percentage exceeds the configured threshold, a measured value is transmitted.
The configured integration interval (5 s or its multiplies) decides when the measured value is
transmitted. The following list shows examples.
If the percentage of the measured-value change is in the configured threshold, a change of the
measured value is transmitted after 5 s.
If the percentage of the measured-value change is twice the configured threshold, a change of the
measured value is transmitted after 10 s.
Table 9-28
Default Values of Thresholds for Operation Values and Harmonics
Group
Descriptions
Threshold
AC voltage
Threshold value for voltages (Vx, Vxy)
5 % (of the last transmitted value)
AC current
Threshold value for currents (Ix, Ixy)
5 % (of the last transmitted value)
Power
Threshold value for power values (P, Q, S)
5 % (of the last transmitted value)
Power factor
Threshold value for power-factor values
5 % (of the last transmitted value)
Frequency
Threshold value for frequencies
0.05 % (of the last transmitted value)
Percentage value
Threshold value for percentage values
(Neg. seq. comp., Zero seq. comp., THDR)
5 % (of the last transmitted value)
Voltage harmonics
Threshold value for voltage harmonics
5 % (of the last transmitted value)
Current harmonics
Threshold value for current harmonics
5 % (of the last transmitted value)
Harmonics power
Threshold value for harmonics power
5 % (of the last transmitted value)
MAN_SICAM_Q100_US.book Page 231 Wednesday, June 5, 2019 9:31 AM