ABB RER620

1MAC309294-MB F Section 7
Measurement functions
RER620 411
Technical Manual
7.1.11.2 Function block
Figure 217: Function block
7.1.11.3 Signals
Table 373: FMMXU Input signals
7.1.11.4 Settings
Table 374: FMMXU Non group settings
7.1.11.5 Monitored data
Table 375: FMMXU Monitored data
7.1.11.6 Technical data
Table 376: FMMXU Technical data
Name Type Default Description
F SIGNAL — Measured system frequency
Parameter Values (Range) Unit Step Default Description
Operation 1=on
5=off
1=on Operation Off / On
F high high limit 35.00...75.00 Hz 60.00 High alarm frequency limit
F high limit 35.00...75.00 Hz 55.00 High warning frequency limit
F low limit 35.00...75.00 Hz 45.00 Low warning frequency limit
F low low limit 35.00...75.00 Hz 40.00 Low alarm frequency limit
F deadband 100...100000 1000 Deadband configuration value for integral calculation (percentage of difference
between min and max as 0,001% s)
Name Type Values (Range) Unit Description
f-Hz FLOAT32 35.00...75.00 Hz Measured frequency
F_INST FLOAT32 35.00...75.00 Hz Frequency, instantaneous value
F_DB FLOAT32 35.00...75.00 Hz Frequency, reported value
F_RANGE Enum 0=normal
1=high
2=low
3=high-high
4=low-low
Measured frequency range
Characteristic Value
Operation accuracy ±10 mHz
(in measurement range 35 - 75 Hz)