and AU_CLOSE, the operator place is not evaluated. If the operator place is set to
Off, the commands through the inputs AU_OPEN and AU_CLOSE are not accepted.
Interaction with synchrocheck and synchronizing functions
M13484-47 v5
The Switch controller (SCSWI) works in conjunction with the synchrocheck and
the synchronizing function (SESRSYN). It is assumed that the synchrocheck
function is continuously in operation and gives the result to SCSWI. The result
from the synchrocheck function is evaluated during the close execution. If the
operator performs an override of the synchrocheck, the evaluation of the
synchrocheck state is omitted. When there is a positive confirmation from the
synchrocheck function, SCSWI will send the close signal EXE_CL to the switch
function Circuit breaker (SXCBR).
When there is no positive confirmation from the synchrocheck function, SCSWI
will send a start signal START_SY to the synchronizing function, which will send
the closing command to SXCBR when the synchronizing conditions are fulfilled,
see Figure
197. If no synchronizing function is included, the timer for supervision
of the "synchronizing in progress signal" is set to 0, which means no start of the
synchronizing function. SCSWI will then set the attribute "blocked-by-
synchrocheck" in the "cause" signal. See also the time diagram in Figure 201.
IEC09000209-2-en.vsd
Synchro
check
OR
SCSWI
SXCBR
CLOSE
SYNC_OK
EXE_CL
Synchronizing
function
SY_INPRO
START_SY
CLOSECB
SESRSYN
CANC_SY
IEC09000209 V2 EN-US
Figure 197: Example of interaction between SCSWI, SESRSYN (synchrocheck
and synchronizing function) and SXCBR function
Time diagrams
M13484-51 v6
The Switch controller (SCSWI) function has timers for evaluating different time
supervision conditions. These timers are explained here.
1MRK 506 382-UEN A Section 11
Control
Line distance protection REL650 2.2 IEC 399
Technical manual
To Next Page
Loading...
