ABB REC 561 User Manual page 328

ABB Network Partner AB
Version 1.0-00
Apparatus control
For the external synchro-check relay, the close command is handled out-
side REC 561. At the close command from the operator, SWICONB acti-
vates the SEL_CLOS and EXE_CLOS outputs. SWICONB now has two
inputs SY_RUN and SY_FAIL, which must have information on the state
of the synchro-check relay. The SY_RUN signal is connected from the
synchro-check relay, so it is activated when the synchro-check is in
progress and waiting for its close command. This signal stops the com-
mand supervision, so that the EXE_CLOS can be activated until the syn-
chro-check relay gives its command to close the breaker.
COMCON
CLOSE
EXECUTE
SWICONB
CLOSE
EXECUTE
SEL_CLOS
EXE_CLOS
&
SY_RUN
SY_FAIL
Timer
&
INPUT
Fig. 29 Connections between external synchro-check equipment and
the apparatus control modules, alternative 1
BI/BO
&
U1
U2
ON
1MRK 580 150-XEN
Page 6 - 43
External synchro-check
or synchronising equipment
SYNCH
CLOSE
CB
close
coil
-
+
+
(X80150-29)