R.V.R. Elettronica PJ5KPS, User'S & Technical Manual

Page: 29 / 168

PJ5KPS
23 / 80 User & Technical Manual Rev. 1.5 - 08/02/06
When the apparatus is set to EXT INT or AUX INT, the mute RF signals of the exciters
are activated and therefore both exciters are inhibited. When the external interlocks
are released, the system re-evaluates both exciters as during the phase from OFF to
ON (see 5.4.4).
5.4.4 Phase from ON to OFF
When the apparatus is set to OFF status and you press the ON button, the power
supply of the exciters is activated and the logic starts to evaluate the exciters. During
the evaluation phase, the WAIT LED stays ON.
When the apparatus is turned OFF, it memorizes the exciter on air. Consequently
when the machine restarts it can attempt to restore the previous conditions. On the
machine restarting, if the exciter that is to be aired does not attain the preset power
level whereas the spare one is operational, the apparatus performs the changeover
when the evaluation time (120 s.) expires.
On the machine restarting, if both exciters do not attain the preset power level, the
apparatus airs the one that had been present when the machine was turned off, after
the evaluation time has expired.
5.4.5 Start-up with exciters in automatic mode
The sequence run by the PJ5KPS, when the power supply is activated while it is
already in ON status and the exciters are in automatic mode, is identical to the one
run for switching from OFF to ON. The only difference is that a screenful displays the
countdown for determining the fault of the exciters. During this phase the manual/
automatic button is inhibited and in order to set the exciters to manual mode you
must press the OFF button of the apparatus.
5.4.6 Audio alarm
The control unit of the PJ5KPS can manage a fault signal, for each exciter, which
normally has an "Audio Alarm" meaning. The control software of the PJ5KPS does
not intervene in triggering these signals since they must be checked by the exciters
(or by any other connected devices).
The Audio Alarm signals are made up of two inputs for the logical signals on the
parallel interface and on the "mute RF" command connector of the exciters.
The control unit manages these signals just like it manages the power good signals:
• Each "Audio alarm" signal is associated with its own exciter
• If the audio signal, associated with the exciter that is currently on air, enters an
alarm status, the PJ5KPS waits for the time configured in the exciter menu before
it attempts the restoring operation