ABB REC 561 User Manual page 399

1MRK 580 151-XEN
Page 6 - 114
Interlocking
These signals from each bus-section disconnector bay (A1A2_DC) are
also needed. For B1B2_DC, corresponding signals from busbar B are
used. The same type of module (A1A2_DC) is used for different busbars,
that is, for both bus-section disconnector A1A2_DC and B1B2_DC.
DCOPTR
Signal if the bus-section disconnector is open.
DCCLTR
Signal if the bus-section disconnector is closed.
VPDCTR
The switch status of A1A2_DC is valid.
EXDUP_DC
Signal if there is no transmission error from the bay that contains the
above information. This signal is taken from the data valid output on the
command function block.
If the busbar is divided by bus-section circuit breakers, the signals from
the bus-section coupler bay (A1A2_BS), rather than the bus-section dis-
connector bay (A1A2_DC) must be used. For B1B2_BS, corresponding
signals from busbar B are used. The same type of module (A1A2_BS) is
used for different busbars, that is, for both bus-section circuit breakers
A1A2_BS and B1B2_BS.
A1A2OPTR
Signal if there is no bus-section coupler connection between bus sections
A1 and A2.
A1A2CLTR
Signal if a bus-section coupler connection exists between bus sections A1
and A2.
VPA1A2TR
The switch status of A1A2_DC is valid.
EXDUP_BS
Signal if there is no transmission error from the bay that contains the
above information. This signal is taken from the data valid output on the
command function block.
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