Due to the design of the plant, some apparatus might need reservation of the own bay as
well as reservations from other bays. Received reservation from other bays are handled by
a logical OR together with own bay reservation from the SELGGIO function block that
checks whether the own bay is currently reserved.
SELGGIO
SELECT1
SELECT2
SELECT3
SELECT4
SELECT5
SELECT6
SELECT7
SELECT8
SELECT9
SELECT10
SELECT11
SELECT12
SELECT13
SELECT14
SELECT15
SELECT16
RESERVED
BAY 1
BAY 2
BAY 3
RESERVED
OR
ANSI11000169_1_en.vsd
ANSI11000169 V1 EN
Figure 82: Reservations from own and other bays
The reservation can also be realized with external wiring according to the application
example in figure 83. This solution is realized with external auxiliary relays and extra
binary inputs and outputs in each IED.
SCSWI
SELECTED
RES_EXT
+
IED
BI
BO
IED
BI
BO
OR
Other SCSWI in the bay
ANSI09000259-1-en.vsd
ANSI09000259 V1 EN
Figure 83: Application principles for reservation with external wiring
Section 10 1MRK 511 286-UUS A
Control
218
Application manual
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