ABB RELION 670 Series Applications Manual page 292

Section 12
Control
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ANSI05000118 V2 EN-US
Figure 125: Application principles for reservation with external wiring
The solution in Figure
example in Figure 126. The solutions in Figure
security compared to the solution in Figure 124, but instead have a higher availability, since no
acknowledgment is required.
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. . .
IEC05000178 V3 EN-US
Figure 126: Application principle for an alternative reservation solution
12.3.2 Interaction between modules
A typical bay with apparatus control function consists of a combination of logical nodes or
functions that are described here:
• The Switch controller (SCSWI) initializes all operations for one apparatus. It is the command
interface of the apparatus. It includes the position reporting as well as the control of the
position
• The Circuit breaker (SXCBR) is the process interface to the circuit breaker for the apparatus
control function.
• The Circuit switch (SXSWI) is the process interface to the disconnector or the grounding
switch for the apparatus control function.
286
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BI
BO
125 can also be realized over the station bus according to the application
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IntlReceive
RESGRANT
IntlReceive
RESGRANT
SCSWI
RES_ EXT
SELECTED
OR
Other SCSWI in the bay
BI
125 and Figure
SCSWI
RES_EXT
SELECTED
Other SCWI in
the bay
Station bus
1MRK 505 337-UUS A
BO
+
en 05000118_ ansi. vsd
126 do not have the same high
SPGAPC
OR
IN
IEC05000178-3-en.vsd
Application manual
M16626-3 v7