Subaru impreza 2017, Owner'S Manual

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9.4.8.5 Operation principle
M16494-3 v7
The users of the Circuit switch (SXSWI) are other functions such as for example,
switch controller, protection functions, autorecloser function, or a 61850 client
residing in another IED or the operator place. SXSWI executes commands,
evaluates block conditions and evaluates different time supervision conditions.
Only if all conditions indicate a switch operation to be allowed, SXSWI performs
the execution command. In case of erroneous conditions, the function indicates an
appropriate "cause" value, see Table
154 .
SXSWI has an operation counter for closing and opening commands. The counter
value can be read remotely from the operator place. The value is reset from a
binary input or remotely from the operator place by configuring a signal from the
Single Point Generic Control 8 signals (SPC8GAPC), for example.
Also, the health of the external equipment, the switch, can be monitored according
to IEC 61850-8-1.
Local/Remote switch
M16494-6 v4
One binary input signal LR_SWI is included in SXSWI to indicate the local/remote
switch position from switchyard provided via the I/O board. If this signal is set to
TRUE it means that change of position is allowed only from switchyard level. If
the signal is set to FALSE it means that command from IED or higher level is
permitted. When the signal is set to TRUE all commands (for change of position)
from internal IED clients are rejected, even trip commands from protection
functions are rejected. The functionality of the local/remote switch is described in
Figure
141 .
From I/O switchLR
TRU
E
FALS
E
Local= Operation at
switch yard level
Remote= Operation at
IED or higher level
en05000096.vsd
IEC05000096 V1 EN-US
Figure 141: Local/Remote switch
Blocking principles
M16494-11 v6
SXSWI includes several blocking principles. The basic principle for all blocking
signals is that they will affect commands from all other clients for example, switch
controller, protection functions and autorecloser.
The blocking possibilities are:
1MRK 505 384-UEN A
Section 9
Control
Breaker protection REQ650 2.2 IEC 299
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