9328900990 Rev L BE1-951 Application 8-27
Table 8-16. FDR-W-IL Virtual Output Logic
State Labels
Output Purpose Description Label
True False
VOA
(OUTA)
Alarm Output Contact.
Alarm contact closes/opens
(refer to style number)
automatically when relay
trouble alarm occurs.
ALARM ACTIVE NORMAL
BESTlogic Expression: VOA=0
VO1
(OUT1)
Breaker Trip Contact.
Trip breaker when protective
trip expression is TRUE or
when breaker is initiated or
when virtual breaker control
switch is operated to trip.
BKR_TRIP TRIP NORMAL
BESTlogic Expression: VO1=VO11+101T+BFPU
VO2
(OUT2)
Breaker Close Contact.
Close breaker when recloser
close output is TRUE or when
virtual breaker control switch is
operated to close.
BKR_CLOSE CLOSE NORMAL
BESTlogic Expression: VO2=79C+101C
VO3
(OUT3)
Relay Backup Enable.
Output is held closed when
relay is in service but is in Test
mode or in Relay Failure mode.
IN_SERVICE NORMAL BACKUP
BESTlogic Expression: VO3=/VO15
VO4
(OUT4)
Block Upstream
Instantaneous Elements.
Upstream instantaneous
elements are blocked when
relay is picked up for high-
speed bus overcurrent
protection. Blocks upstream
instantaneous elements when
the protective pickup
expression is TRUE, the relay
is not in Test mode, and the
breaker has not failed.
BLK_UPSTRM BLOCKED NORMAL
BESTlogic Expression: VO4=VO12+/VO5*/VO15
VO5
(OUT5)
Breaker Failure Trip.
Trip backup if breaker
protection times out.
BKR_FAIL TRIP NORMAL
BESTlogic Expression: VO5=BFT
VO6 N/A N/A VO6 TRUE FALSE
BESTlogic Expression: VO6=0
VO7 N/A N/A VO7 TRUE FALSE
BESTlogic Expression: VO7=0
VO8 Reclose Initiate.
TRUE when any protective
element trips.
RCL_INI INI NORMAL
BESTlogic Expression: VO8=VO11
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