ABB REC670 Applications Manual page 322

Section 14
Control
316
needs to be connected only if the trip function block has been selected to give
1ph/2ph/3ph trip and an auto reclosing cycle with two phase reclosing is foreseen.
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 117, Figure
for 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
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
118 and Figure 119 and default factory configuration
1MRK 511 401-UEN A
M12399-46 v9
Bay control REC670 2.2 IEC
Application manual