ABB REB670 Applications Manual page 336

Section 12
Control
330
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
The ZONESTEP input is used when coordination between local auto reclosers and
down 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 ZONESTEP input. This functionality is controlled by the setting
ZoneSeqCoord.
Recommendations for output signals
Please see Figure 128, Figure
examples.
1PT1 and 2PT1
Indicates that single-pole or two-pole auto reclosing is in progress. It is used to
temporarily block an ground-fault and/or pole disagreement function during the single-
pole or two-pole open interval.
3PT1, 3PT2, 3PT3, 3PT4 and 3PT5
Indicates that three-pole auto reclosing shots one to five are in progress. The signals
can be used as an indication of progress or for own logic.
ABORTED
The ABORTED output indicates that the auto recloser is inhibited while it is in one of
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
129 and Figure 130 and default factory configuration for
1MRK 505 370-UUS A
M12399-46 v9
Busbar protection REB670 2.2 ANSI
Application manual