Selection And Reservation - ABB REC 561 User Manual

1MRK 580 150-XEN
Page 6 - 4
2.3 Selection and
reservation
Apparatus control
• Block/deblock operation (per apparatus or bay)
• Override of reservation, interlocking and/or synchro-check
• Selection of operator place, station and/or remote
• Block/deblock updating of the position indications (per apparatus or
bay)
• Setting of the position indication, open/close
Local
These commands are supported from the local MMI (back-up panel):
• Select, open/close
• Execute, open/close
• Override, reservation and/or interlocking
• Set operator place to local (switch on the back-up panel)
Automatic functions
An automatic program (placed in REC 561 or in external equipment) can
be connected to the apparatus control. These signals can be connected to
the apparatus control:
• Signals for select (open/close)
• Signals for execute (open/close)
• Cancel the selection
• Signal to reserve the apparatus for automatic functions. Used when
the apparatus is included in a sequence
The purpose of the reservation and selection is to prevent double opera-
tion, either in the bay itself or in the complete station. For an operation in
the bay, the reservation part always reserves the own bay. The engineer
can include or exclude the part that reserves other bays.
The selection and reservation function consists of four parts:
1. Reservation of the own bay
2. Requesting reservation of other bays and handling of the acknowledge-
ment signals
3. Replying to reservation requests
4. Permitting selection of apparatuses, depending on reservations
The selection and reservation function has two ways of starting. It starts
when a request select signal is set in the own bay or when it receives a
request for reservation from another bay.
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