ABB Relion 670 series - Fixed Signal Function Block FXDSIGN

IEC09000310-2-en.vsd
IEC09000310 V2 EN
Figure 388: Example designation, serial execution number and cycle time for logic
function that also propagates timestamp and quality of input signals
The execution of different function blocks within the same cycle is determined by the
order of their serial execution numbers. Always remember this when connecting two or
more logical function blocks in series.
Always be careful when connecting function blocks with a fast cycle time
to function blocks with a slow cycle time.
Remember to design the logic circuits carefully and always check the
execution sequence for different functions. In other cases, additional time
delays must be introduced into the logic schemes to prevent errors, for
example, race between functions.
17.7 Fixed signal function block FXDSIGN
17.7.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Fixed signals FXDSIGN - -
17.7.2 Application
The Fixed signals function (FXDSIGN) has nine pre-set (fixed) signals that can be used
in the configuration of an IED, either for forcing the unused inputs in other function blocks
to a certain level/value, or for creating certain logic. Boolean, integer, floating point, string
types of signals are available.
Section 17 1MRK 506 369-UUS -
Logic
802 Line distance protection REL670 2.2 ANSI
Application manual