ABB Relion 620 Series - Page 60

Section 3 1MAC308145-MB E
RER620 application
54 RER620
Application Manual
Figure 38: Power measurement
The FMMXU block measures the frequency of the analog inputs to the RER620. The value
measured is displayed in Hertz.
Figure 39: Frequency measurement
APEMMXU1(P,SP,E
RSTACM
FMMXU1(f;f)