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Section 12
Control
TRSOTF
This is the signal "Trip by Switch Onto Fault". It is usually connected to the "switch onto fault"
output of line protection if multi-shot auto reclosing attempts are used. The input will start
the shots two to five.
WAIT
Used to hold back reclosing of the "low priority unit" during sequential auto reclosing. See
"Recommendation for multi-breaker arrangement" below. The signal is activated from output
WFMASTER on the second breaker auto recloser in multi-breaker arrangements.
ZONESTEP
ZONESTEP input is used when coordination between local auto reclosers and down
The
stream auto reclosers is needed. When this input is activated the auto recloser increases its
actual shot number by one and enters "reclaim time" status. If a start is received during this
reclaim time the auto recloser is proceeding as usual but with the dead time for the increased
shot number. Every new increase of the shot number needs a new activation of the
input. This functionality is controlled by the setting
Recommendations for output signals
Please see Figure 134, Figure
examples.
1PT1 and 2PT1
Indicates that single-phase or two-phase auto reclosing is in progress. It is used to temporarily
block an earth-fault and/or pole disagreement function during the single-phase or two-phase
open interval.
3PT1, 3PT2, 3PT3, 3PT4 and 3PT5
Indicates that three-phase auto reclosing shots one to five are in progress. The signals can be
used as an indication of progress or for own logic.
ABORTED
ABORTED output indicates that the auto recloser is inhibited while it is in one of the
The
following internal states:
•
inProgress: auto recloser is started and dead time is in progress
•
reclaimTimeStarted: the circuit breaker closing command has started the reclaim timer
•
wait: an auto recloser, acting as slave, is waiting for a release from the master to proceed
with its own reclosing sequence
ACTIVE
Indicates that the auto recloser is active, from start until end of reclaim time.
BLOCKED
Indicates that auto recloser is temporarily or permanently blocked.
CLOSECB
Connect to a binary output for circuit breaker closing command.
COUNT1P, COUNT2P, COUNT3P1, COUNT3P2, COUNT3P3, COUNT3P4 and
COUNT3P5
Indicates the number of auto reclosing shots made for respective shot.
276
ZoneSeqCoord .
135
and Figure
136
and default factory configuration for
1MRK 505 370-UEN D
ZONESTEP
M12399-46 v9
Busbar protection REB670
Application manual
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