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7
OPERATING MODES
NORMAL MODE OPERATION- UPS mode
During normal operation, mains power provides energy to the UPS. The filters,
the power factor correction circuit and
the inverter process this power to
provide computer grade power to
connected loads. The UPS maintains
the batteries in a fully charged state.
The four green LED’s indicate an
approximate level of load in 25%
increments. If the UPS becomes
loaded beyond full rating, the fifth
(amber) LED indicator will illuminate
and sound an alarm.
The display template indicates the
percentage of load on the UPS output.
BATTERY MODE OPERATION
Battery mode occurs in event of an
extreme input voltage condition or
complete mains failure. The battery
system supplies power through the
DC-DC converter to the inverter to
generate power for the connected
load.
During battery mode an alarm sounds
every 10 seconds. This will change to
2 beeps every 5 seconds when battery
runs low (approximately 2 minutes
remaining). The AC Input LED will
extinguish, and the Battery LED will
illuminate to warn that a mains problem
has occurred. Each load/battery level indicator represents a 20% capacity level.
As capacity decreases, fewer indicators remain illuminated. Refer to the
Troubleshooting Guide.
To increase this time, turn off non-essential pieces of equipment (such as idle
computers and monitors) or add an optional external battery cabinet.
CAUTION: Turning off the UPS while in battery mode will result in loss of output
power.
Once mains power is restored, the UPS resumes normal operation. At this time,
the Battery Charger begins recharging the battery.
Normal Mode Operation at
51-75% loading
Battery Mode Operation at
81-100% battery capacity