Basler Electric BE1-851 - Manual (Page 211)

Table 8-28. BACKUP Virtual Outputs
Output Purpose Description Label
State Labels
True False
VOA
(OUTA)
Alarm Output Contact.
Change state of alarm contact
when relay failure or major
programmable alarm is TRUE.
(Style dependent.)
ALARM ACTIVE NORMAL
BESTlogic Expression: VOA=ALMMAJ
VO1
(OUT1)
Bus breaker trip.
Trip breaker for virtual control
switch trip OR for 51 trip or
when breaker failure is picked
up. Close OUT1 for any trip
when in test mode.
BKR_TRIP TRIP NORMAL
BESTlogic Expression: VO1=101T+VO8+BFPU+VO11*VO15
VO2
(OUT2)
Bus breaker close.
Close breaker when virtual
breaker control switch is
operated to close.
BKR_CLOSE CLOSE NORMAL
BESTlogic Expression: VO2=101C
VO3
(OUT3)
Signal relay on bus
source that is using BUS
logic that feeder relay is
out of service.
Feeder relay is out of service
as indicated by contact open
from the feeder relays.
BACKUPMODE BACKUP NORMAL
BESTlogic Expression: VO3=/IN2
VO4
(OUT4)
Bus fault trip (86B).
Trip bus breaker via lockout for
bus faults (50T with 18-20
cycles delay) when not in test
mode.
BUS_TRIP TRIP NORMAL
BESTlogic Expression: VO4=VO9*/VO15
VO5
(OUT5)
Breaker failure trip
contact.
Trip backup if breaker failure
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 Time overcurrent trip.
TRUE if any of the time
overcurrent elements trip.
51_TRIP TRIP NORMAL
BESTlogic Expression: VO8=51PT+51NT+51QT
VO9
Instantaneous
overcurrent trip.
TRUE if any of the
instantaneous overcurrent
elements trip.
50_TRIP TRIP NORMAL
BESTlogic Expression: VO9=50TPT+50TNT+50TQT
VO10
Breaker failure initiate
expression.
Initiate breaker failure timing
when protective trip expression
is TRUE or when external
initiate contact is sensed and
any of the fault detectors is
picked up.
VO10 INI NORMAL
BESTlogic Expression: VO10=0
9289900990 Rev R BE1-851 Application 8-55