ABB REC650 Technical Manual page 255

1MRK 511 287-UEN A
Technical manual
Evaluation of position
The position output from switch (SXCBR or SXSWI) is connected to SCSWI. With
the group signal connection the SCSWI obtains the position, time stamps and quality
attributes of the position which is used for further evaluation.
In the supervision phase, the switch controller function evaluates the "cause" values
from the switch modules Circuit breaker (SXCBR)/ Circuit switch (SXSWI). At error
the "cause" value with highest priority is shown.
Blocking principles
The blocking signals are normally coming from the bay control function (QCBAY)
and via the IEC 61850 communication from the operator place.
The IEC 61850 communication has always priority over binary
inputs, e.g. a block command on binary inputs will not prevent
commands over IEC 61850.
The different blocking possibilities are:
• Block/deblock of command. It is used to block command for operation of
position.
• Blocking of function, BLOCK, signal from DO (Data Object) Behavior (IEC
61850). If DO Behavior is set to "blocked" it means that the function is active, but
no outputs are generated, no reporting, control commands are rejected and
functional and configuration data is visible.
The different block conditions will only affect the operation of this
function, that is, no blocking signals will be "forwarded" to other
functions. The above blocking outputs are stored in a non-volatile
memory.
Interaction with synchrocheck and synchronizing functions
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 116. 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
Section 10
Control
249