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210
Apparatus control
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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 interaction 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 busbar voltage lev-
el 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 figure 93.
The timing diagram is shown in figure 94. The reservation function 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 elements 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.
3. After acknowledgement from all bays, the select output (SELx) from BAYCON ac-
tivates the SELECT in COMCON and allows the execute command to pass
through.
4. When SELECT in SWICON is activated, SWICON with the signals OPEN/
CLOSE/EXECUTE from COMCON gives an execution signal (open/close) using
the output signals SEL_OPEN/CLOS and EXE_OPEN/CLOS.
5. The signal SEL_RES resets the selection request (RQ_SEL) after successful oper-
ation (that is, new position reached) or command error. SEL_RES is active until SE-
LECT is reset.
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