ABB RELION REX640 Technical Manual page 1416

Section 9
Control functions
1410
ASGCSYN
CLOSE_CB
SYNC_OK
GUID-D27D2EC1-A690-4D7E-A32F-F80434153070 V1 EN
Figure 756: Simplified configuration block diagram of ASGCSYN in auto
synchronization mode operation
Alarms generation
In the synchro check command and auto synchronization control mode operation,
there are alarms for failed closing attempt (CL_FAIL_AL) and for a command signal
that remains active too long (CMD_FAIL_AL).
In the auto synchronization control mode, the closing command generation is
activated either by the command input CL_COMMAND or by the command parameter
Synchronize CB.
From the closing command activation, if the conditions for closing CB are not fulfilled
within the set time of Maximum Syn time, a failed closing attempt alarm is given. The
CL_FAIL_AL alarm output signal is pulse-shaped and the pulse length is 500 ms.
CL_COMMAND or
Synchronize CB
CLOSE_CB
CL_FAIL_AL
GUID-26B52E7B-CEFE-4948-BABC-76CEDCF68FAC V2 EN
Figure 757: Determination of checking time for closing
CB closing is permitted during Maximum Syn time, starting from the moment the close
command is activated. The close command must be active while the closing
conditions are fulfilled, otherwise the procedure is cancelled. If the closing conditions
are fulfilled during Maximum Syn time, a closing pulse output is delivered to the
CBXCBR
AU_CLOSE
EXE _ CL
SYNC_OK
t = Maximum Syn time
1MRS759142 C
I
t = 500 ms
REX640
Technical Manual