5. Operation Modes
Battery Mode
When the UPS is operating during a power
outage, the batteries provide DC power,
which maintains inverter operation to sup-
port the critical load. During battery mode,
the BATTERY LED indicator
(
) illuminates (yellow).
BATTERY
Table 5-1: The battery status is as follows
Battery Capacity
Full/ Mid
Low
Depleted
Bypass Mode
The critical load is directly supplied
by the utility power and the batteries
are charged. During bypass mode, the
BYPASS LED indicator (
illuminates (yellow).
BYPA.
MAINS
Buzzer
The alarm beeps once every second.
(ON for 0.1 second and OFF for 9.9 seconds)
The alarm beeps once every 0.5 second.
(ON for 0.1 second and OFF for 0.9 second)
Long beep.
BYPA.
)
BYPASS
MAINS
Rectifier
Inverter
Batteries
(Figure 5-4: Path of Electrical Power through the UPS in Battery Mode)
Rectifier
Inverter
Batteries
(Figure 5-5: Path of Electrical Power through the UPS in Bypass Mode)
30
LOAD
LCD Display
BATTERY CAPACITY
00V/ 000%
BATTERY CAPACITY
00V/ 000%
SHUTDOWN DUE TO
LOW BATTERY
LOAD