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4.2 Operating modes
UPS OPERATING MODE LEDs/DISPLAY INDICATION BUZZER
NORMAL MODE
on-line, double conversion
LEDs: steady ,
DISPLAY:
No sound
STORED ENERGY MODE
The loads are supplied through the
batteries connected to the UPS
LEDs: xe
DISPLAY:
Beep every second
BYPASS MODE
The loads are supplied directly from
the mains. The UPS does not protect
the loads.
The UPS is in bypass mode when it is
in standby, after a generic alarm or a
prolonged overload in normal mode.
LEDs: steady
DISPLAY:
No sound (with the
UPS in standby)
Beep every two
seconds (after a
prolonged over-
load or another
generic alarm)
ECO MODE
The loads are supplied directly from
the mains through the automatic
bypass circuit inside the UPS. The
output voltage and frequency are
the same as the mains.
LEDs: steady
DISPLAY:
No sound
CVCF 50/60
The UPS maintains constant the
output voltage and the output fre-
quency to 50 Hz or 60 Hz according
to the setting
WARNING
Only the UPS 3 101 77 can be used
in this mode (turning o the bypass
input breaker)
LEDs: steady
DISPLAY:
No sound
See also paragraph 4.6 to set the operating mode.
4 Operation
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