Hitachi Relion 670 Series Applications Manual page 237

1MRK506375-UEN Rev. N
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IEC05000118 V2 EN-US
Figure 88:
The solution in Figure
example in Figure 89. The solutions in Figure
compared to the solution in Figure 87, but instead have a higher availability, since no
acknowledgment is required.
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. . .
IEC05000178 V3 EN-US
Figure 89:
12.3.8 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 earthing switch for
the apparatus control function.
• The Bay control (QCBAY) fulfils the bay-level functions for the apparatuses, such as operator
place selection and blockings for the complete bay.
• The Reservation (QCRSV) deals with the reservation function.
• The Protection trip logic (SMPPTRC) connects the "trip" outputs of one or more protection
functions to a common "trip" to be transmitted to SXCBR.
Railway application RER670
Application manual
BI
BO
Application principles for reservation with external wiring
88 can also be realized over the station bus according to the application
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IntlReceive
RESGRANT
IntlReceive
RESGRANT
Application principle for an alternative reservation solution
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SCSWI
RES_EXT
SELECTED
Other SCSWI in the bay
BI
88 and Figure 89
SCSWI
RES_EXT
SELECTED
Other SCWI in
the bay
Station bus
OR
BO
+
en05000118.vsd
do not have the same high security
SPGAPC
OR
IN
IEC05000178-3-en.vsd
Section 12
Control
M16626-3 v12
231