11.9.1 Identification
11.9.1.1 Identification
GUID-F3FB7B33-B189-4819-A1F0-8AC7762E9B7E v2
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Limit counter L4UFCNT -
11.9.2 Functionality
GUID-13157EAB-1686-4D2E-85DF-EC89768F3572 v6
The Limit counter (L4UFCNT) provides a settable counter with four independent
limits where the number of positive and/or negative flanks on the input signal are
counted against the setting values for limits. The output for each limit is activated
when the counted value reaches that limit.
Overflow indication is included for each up-counter.
11.9.3 Operation principle
GUID-4D58423F-329C-4553-9FAF-E55A368849A5 v2
Limit counter (L4UFCNT) counts the number of positive and/or negative flanks on
the binary input signal depending on the function settings. L4UFCNT also checks
if the accumulated value is equal or greater than any of its four settable limits. The
four limit outputs will be activated relatively on reach of each limit and remain
activated until the reset of the function. Moreover, the content of L4UFCNT is
stored in flash memory and will not be lost at an auxiliary power interruption.
11.9.3.1 Design
GUID-B643C994-D0BA-4BE9-BACB-ADEA0197CAE4 v1
Figure
230 illustrates the general logic diagram of the function.
1MRK 505 384-UEN A Section 11
Monitoring
Breaker protection REQ650 2.2 IEC 483
Technical manual
To Next Page
Loading...
