8.1.8.3 Functionality
The frequency measurement range is 35...75 Hz. The measured frequencies outside the
measurement range are considered to be out of range and the minimum and maximum
values are then shown in parentheses.
When Frequency adaptivity is enabled, the measurement range is extended to 10...75 Hz
in a 50 Hz network and 12...90 Hz in a 60 Hz network. The measured frequencies outside
35...75 Hz are shown in parentheses.
When the frequencies cannot be measured, for example, due to too low voltage amplitude,
the default value for frequency measurement can be selected with the Def frequency Sel
setting parameter. In the “Nominal” mode the frequency is set to 50 Hz (or 60 Hz) and in
“Zero” mode the frequency is set to zero and shown in parentheses.
8.1.8.4 Signals
Table 822: f Input signals
Name Type Default Description
F SIGNAL - Measured system frequency
8.1.8.5 Settings
Table 823: f Non group settings (Basic)
Parameter
Values (Range) Unit Step Default Description
Operation 1=enable
5=disable
1=enable Operation Disable / Enable
F Hi high limit 35.00...75.00 Hz 1 60.00 High alarm frequency limit
F high limit 35.00...75.00 Hz 1 55.00 High warning frequency limit
F low limit 35.00...75.00 Hz 1 45.00 Low warning frequency limit
F Lo low limit 35.00...75.00 Hz 1 40.00 Low alarm frequency limit
F deadband 100...100000 1 1000 Deadband configuration value for integral
calculation. (percentage of difference between
min and max as 0,001 % s)
Table 824: f Non group settings (Advanced)
Parameter
Values (Range) Unit Step Default Description
Def frequency Sel 1=Nominal
2=Zero
1=Nominal Default frequency selection
1MAC059074-MB A Section 8
Measurement functions
615 series ANSI 919
Technical Manual
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