ABB Relion 650 Series REB650 Technical Manual page 258

Section 10
Control
252
The interlocking module is connected to the surrounding functions within a bay as
shown in figure 108.
Interlocking
modules in
other bays
Interlocking
module
en04000526.vsd
IEC04000526 V1 EN
Figure 108: Interlocking module on bay level
Bays communicate via the station bus and can convey information regarding the
following:
• Unearthed busbars
• Busbars connected together
• Other bays connected to a busbar
• Received data from other bays is valid
Figure 109 illustrates the data exchange principle.
Bay 1
Disc QB1 and QB2 closed
WA1 not earthed
WA2 not earthed
WA1 and WA2 interconn
WA1
WA2
QB1
QB2
QA1
QB9
IEC05000494 V1 EN
Figure 109: Data exchange between interlocking modules
Apparatus control
modules
SCILO SCSWI
SXSWI
Apparatus control
modules
SCILO SCSWI SXCBR
Apparatus control
modules
SCILO SCSWI
SXSWI
Station bus
Bay n
Disc QB1 and QB2 closed
. . .
WA1 not earthed
WA2 not earthed
WA1 and WA2 interconn
. .
QB1
QB2
QA1
QB9
1MRK 505 288-UEN A
Bus coupler
WA1 unearthed
WA1 unearthed
WA1 and WA2 interconn
WA1 and WA2 interconn
in other bay
QB2
QB1 QC1
QA1
en05000494.vsd
Technical manual
QC2