User’s manual
EXPERT 1K-FA
Pag. 70 of 76
18.23 Diagnostics.
During normal working, the system performs a continuous monitoring of some
measurements directly acquired from certain internal test-points; among the most
important there are the ones related to the power-supply unit behaviour.
When a dangerous situation is going to happen, a “serious” alarm message is raised
and the working mode is switched from
OPERATE
to
STANDBY
.
The user can either immediately restore the
Main Display Page
by pressing the
[
DISPLAY
] key or wait for the visual alarm time-out expiration (about 10 seconds).
In the following picture is shown, as an example, the case of a power-supply unit trouble
(the power-supply voltage level is fallen below the programmed threshold) while in
OPERATE mode
:
After having restored from an alarm message, the
Alarm History
report can be viewed
and browsed as described in the relative section.
The following table shows all the system’s alarm messages that are recorded in the
Alarm
History
stack:
MESSAGE
MEANING
POWER MANAGEMENT: V PA < 20 V
HALF mode: supply voltage level < 20 V
POWER MANAGEMENT: V PA < 26 V
FULL mode: supply voltage level < 26 V
POWER MANAGEMENT: V PA > 50 V
HALF/FULL mode: supply voltage level > 50 V
POWER MANAGEMENT: I PA > 40 A
HALF mode: supply sourced current > 40 A
POWER MANAGEMENT: I PA > 50 A
FULL mode: supply sourced current > 50 A
P.A. MANAGEMENT: OVER DRIVING
Amplifier over driving
P.A. MANAGEMENT: PA PROTECTION
Internal hardware protections intervention
P.A. MANAGEMENT: PW REV > 300 W
Reflected power > 300 W
OVER TEMPERATURE: TEMP > 90 °C
Heatsink temperature > 90 °C (194 °F)
