Siemens SICAM Q100 7KG95 Series - Page 231

9 Operation at Use of a PC
9.3 Configuration of the Device
231SICAM 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