PJ2000M-C, PJ2500M-C & PJ3000M-C
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User Manual
Rev. 1.5 - 09/10/09
The system resets the alarm counters automatically after thirty minutes of operation,
i.e. the user need not do anything, if the amplifier does not trigger any alarms or
after the machine the machine has been turned OFF and then back ON.
5.4.1 RF module auxiliary protection
The amplifier’s RF module contains a second microcontroller that manages local
measurements and carries out auxiliary protection functions of the machine
together with the main protection system. This microcontroller card indicates its
interventions via the LEDs of the RF module.
A delivered power automatic back-off mechanism is envisaged for excess
temperature, SWR or current absorbed by a MOSFET module. The yellow
FOLDBACK LED indicates this case.
A FAULT signal is triggered (red LED) when a fault occurs that stops the power
amplifier. This situation is signaled to the machine’s main microcontroller as well
and triggers a lock situation (FAULT).
The LED FUSE BLOWN indicates that one of the fuses that protects the power
supply of the MOSFET modules has blown. In this case the machine keeps running
as usual (obviously without the contribution of the module) even if it is advisable
to single out and clear the cause for the malfunction and replace the fuse as soon
as possible to fully restore the machine’s working efficiency.
Note:
Il pulsante RESET sul modulo PS resetta anche le protezioni ausiliarie del
modulo RF.
5.4.2 Power Supply Units
Three power supply units, which work in parallel mode, power the machine. Should
one of the power supply units malfunction, the machine automatically reduces the
delivered power down to a value compatible with the current deliverable from the
surviving power supply. This situation is indicated by the “P.S. ALARMS” LEDs on
the front panel of the PS module.
