Overvoltage Signal - Ducati Energia REGO 5 Manuel D'instruction

After 30 minutes all these actions will be cleared and the controller will
automatically resume operation (auto-reset status
A.r.), though the incident will continue to be signaled via the display,
which will show "A.L.A." in turn with "C.O.S. " and the last value
measured.
To clear the display press ALARM/RESET.

13.2 OVERVOLTAGE SIGNAL

This signal is activated when the controller measures a supply voltage
exceeding the maximum allowed by the transformer (230 +19%; 400
+19%) for longer than 30 seconds.
This protection is active even if no capacitor bank is currently switched
on. When this alarm is triggered:
– the initials "A.L.A." will be displayed in turn with "U.F.F." and the last
value measured (these digits will also be separated by ...)
Ex.
– the ALARM LED situated on the front panel of the controller will
light up.
– the alarm relay contact connected to the controller terminal block
will open.
– the number shown by the UFF alarm counter will increase by one.
After 30 minutes all these actions will be cleared and the controller will
automatically resume operation (auto-reset status A.r.), though the
incident will continue to be signaled via the display, which will show
"A.L.A." in turn with "U.F.F." and the last value measured.
To clear the display press ALARM/RESET.
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