ABB REC 561 User Manual page 307

1MRK 580 150-XEN
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Apparatus control
The other version (SWICONB) is used for an external synchro-check or
synchronising relay. The close command from this relay is handled out-
side REC 561, see Fig. 29 and Fig. 30. At the close command from the
operator, SWICON activates the SEL_CLOS and EXE_CLOS outputs.
SWICON now has two inputs SY_RUN and SY_FAIL that must have
information on the state of the synchronising relay. The SY_RUN signal
is connected to the synchronising relay, so it is activated when the syn-
chronising is in progress and waiting for its close command. This signal
stops the command supervision given by the T_START time, so that the
EXE_CLOS can be activated until the synchronising relay gives its com-
mand to close the breaker. Also other timers in SWICONB are stopped
when SY_RUN is activated. If not, the SY_RUN input is used; it sets to
FIXD-OFF.
The SY_FAIL must be activated if the synchro-check does not reach syn-
chronism within a certain time. SY_FAIL resets the complete operation
sequence.
The auto reclose function closes the breaker via an OR logic (OR with the
same cyclicity as the autoreclose function) with the normal close order
from SWICON. For fast autoreclose function used with external selection
relays, the AR_SEL input is used to select the apparatus without any
checks of the selection conditions. To block the autoreclose function at
the moment the apparatus is under operation, SWICON gives a BLK_AR
output.
Parameters
T_POSERR
Allowed time for middle position.
T_POL
Time parameter for pole discordance. Allowed time to have discrepancy
between the poles.
T_SEL
Allowed time from selection to feedback select.
T_START
Allowed time from execute to position indication change.
T_PULSE
Time parameter for command output pulse length. T_PULSE = 0 gives a
steady command output signal.
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