ABB Relion 630 Series Engineering Manual page 81

1MRS756800 F
630 series
Engineering Manual
overrides the synchrocheck, the evaluation of the synchrocheck state is omitted. When
there is a positive confirmation from the synchrocheck function, the switch controller
sends a close signal EXE_CL to the switch breaker function DAXCBR.
When there is no positive confirmation from the synchrocheck function, the switch
controller sends a start signal START_SYN to the synchronizing function. The
function sends a closing command to the switch function when the synchronizing
conditions are fulfilled, as shown in
included, SYNC_OK input should be connected to TRUE and SYN_INPRO to
FALSE.
GNRLCSWI
SYNC_OK
START_SYN
SYN_INPRO
SYNCRSYN
Synchro
Check
IEC09000602 V1 EN
Figure 53: Example of interaction between GNRLCSWI, SYNCRSYN
(synchrocheck and synchronizing function) and DAXCBR functions
RES_EXT input deals with the reservation functionality. The purpose of the
reservation functionality is primarily to transfer interlocking information between
IED's in a safe way and to prevent double operation in a bay, switchyard part, or
complete substation. Reservation can be done from the bay in which IED is located or
may be from another bay. It is only possible to reserve the function if it is not currently
reserved. When RES_EXT is activated for a particular apparatus the apparatus is
reserved and it cannot be operated from the IED. If RES_EXT is activated and a
simultaneous attempt is made to open/close the apparatus from the LHMI, the
message that will be displayed on the display is as shown in
Protection and control engineering
Figure 53. If no synchronizing function is
EXE_CL
CLOSE
OR
.
CLOSE CB
Synchronizing
function
IEC09000602-1-en.vsd
Section 5
DAXCBR
Figure 54.
75