ABB REL650 series, Applications Manual

Page: 428 / 516

which will suppress one cycle pulse if the function has been put in the
wrong execution order.
13.5 Fixed signals FXDSIGN
13.5.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Fixed signals FXDSIGN - -
13.5.2 Application
The Fixed signals function FXDSIGN generates 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.
Example for use of GRP_OFF signal in FXDSIGN
The Restricted earth fault function REFPDIF (87N) can be used both for auto-
transformers and normal transformers.
When used for auto-transformers, information from both windings parts, together with the
neutral point current, needs to be available to the function. This means that three inputs are
needed.
I3PW1CT1
I3PW2CT1
I3P
REFPDIF (87N)
ANSI11000083_1_en.vsd
ANSI11000083 V1 EN
Figure 206: REFPDIF (87N) function inputs for autotransformer application
Section 13
1MRK 506 334-UUS A
Logic
422
Application manual