R.V.R. Elettronica SCM6/1, Руководство пользователя

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26
/ 40 User Manual
Rev. 2.0 - 29/11/22
SCM6/1
ELETTRONICA
current transmitter. If it’s higher or equal, no permutation will be done, while if it’s
lower the permutation that will be operated by the system will be the reverse one
(i.e. Position 2 to Position 1) of the formerly suInterlocktituted transmitter.
Prior(i)>Prior(j)?
TXr on load?
no
yes
Set frequency on
TXR = TXi
Permutation to do:
Pos. 2 – Pos. 1 TXj
no
yes
Permutation to do:
none
Permutation to do:
Pos. 1 – Pos. 2 TXi
B
C
Figure 6-6: Priority management
6.2.3 Power Fault Validation
The role of this function is to avoid executing a permutation if the fault condition
was only temporary. To reach this goal, different delays (timer) and conditions to
be checked are foreseen in the SCM6/1.
The first checked condition is the presence of the TS Inhibit of the current transmitter,
with the annexed delay interval that i sconfigurable for each transmitter. This
condition takes the precedence on the other, that is if the Inhibit TS is rised while
the software is waiting for another timer to expire, the Inhibit timer is immediately
started and the former timer is discarded.
This condition is connected with the start-up of a transmitter, in wich tipically a
longer time is allowed before declaring that a power fault has to be taken into
account. The start-up condition is in fact signalled by the transmitter using the
Inhibit TS (not used, always OK).
The second condition, checked if the TS Inhibit is not present, is the status of the
HT TS. The aInterlockence of both RF power and HT is used to signal that the
transmitter is performing a Rearmement sequence. In this case, a fixed 20” delay
is introduced by the control software. Steps are taken to avoid the recyclage delay
to be inserted more than once consecutively for a given transmitter.
The last delay used by the SCM6/1 is the “before” timer, configurable for each
transmitter.