R.V.R. Elettronica PJ1000M-C, Руководство пользователя

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PJ2000M-C, PJ2500M-C & PJ3000M-C
15 / 40 User Manual Rev. 1.5 - 09/01/09
5.3.7 Version Menu
This screenful shows the hardware version (H.V.) and the software version (S.V.)
of the equipment.
5.4 Protection System
The protection system implemented inside the amplifier is based on two types of
intervention.
The first reaction is called “Foldback” and consists in decreasing the voltage in
the power amplifier when the forward or reflected power exceeds the proportional
limit voltage value. As such, the amplifier’s gain is reduced and the overall result is
an action that opposes the increase of the forward or reflected power. The yellow
LED on the front panel indicates the tripping of the foldback circuit.
The second type of reaction consists in turning OFF the equipment’s amplifying
section when a specific variable exceeds a set value.
Depending on the type of event occurred, and after the amplifier has been turned
OFF, it will be reactivated after a set length of time or only after the sharing,
which caused the locking, has been cleared. In the alarm menu the first type of
configuration is indicated by X - (Y) , whereas the second one is indicated by Wait .
The third possibility is that the system does not trigger the protection conforming
to a specific parameter: this is indicated by Dis . (Disabled).
While the amplifier is OFF temporarily owing to an alarm, the yellow WAIT LED
lights up and the reason the protection was triggered is shown on the display.
When the protection system trips due to a “cyclic” type parameter, a counter
begins counting up (the X value in the alarm menu). If the counter reaches the max
admissible cycle value (Y), the amplifier turns OFF definitely and the red “FAULT”
LED lights up on the front panel.
The user may press the ALARMS RESET key to interact with the protection system.
The effect differs depending on the machine’s status when the key is pressed:
• If the equipment is off, waiting for the cycle time to be reached, or if it is
definitively off in FAULT state, press the ALARMS RESET button to immediately
turn the amplifier ON and reset the alarm counters.
• SIf the system is transmitting but alarms were triggered earlier causing certain
counters not to be at “0”, pressing the key will have no effect unless it is pressed
while inside the alarm menu. As such, the system will be sure that the user
takes note of the alarms that were triggered before resetting them.