Connections To Other Functions; Reservation Function - ABB REC 561 User Manual

1MRK 580 150-XEN
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4.2 Connections to other
functions

4.2.1 Reservation function

Apparatus control
Fig. 13 shows an overview of a disconnector/earthing switch module.
COMCON
Operator
command
Interlocking
Fig. 13 Overview of a disconnector/earthing switch configuration
The reservation function is primarily a method to transfer interlocking
information from other bays in a safe way.
To reserve other bays, the BAYCON bay control module needs interac-
tion with the bays that must be reserved. Note that only bays that must be
reserved or need to reserve other bays must have these connections.
The question of which bays that should be reserved by this bay is delivery
specific. In general there are three ways:
• Only the bays that influence the interlocking conditions must be
reserved.
• The whole voltage level must be reserved. All other bays on this bus-
bar voltage level must be blocked.
• The whole station must be reserved. All other bays in the station
must be blocked.
The connections to reserve the apparatuses within the own bay are shown
in Fig. 14. The timing diagram is shown in Fig. 15. The reservation func-
tion follows the steps below:
1. The op_SEL_O selection signal or op_SEL_C selection signal
(op=operator place R/S/L) in COMCON is activated when an apparatus
is selected for operation. COMCON sets the RQ_SEL output.
2. The signal RQ_SEL activates the RE_BAYS output via RQ_SELx in
BAYCON for reserving other bays. After successful acknowledgement
from other bays, the select output (SELx) is set to inform other ele-
ments that it has reached a reserved state. In this state, it will not accept
other requests, which ensures that no other operations are possible in
this bay.
ABB Network Partner AB
BI/BO
SWICONC
INT_LOCK
Version 1.0-00
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(X80150-13)