Emerson GXT2U - Manual (Page 22)

18
Battery Mode Operation
Battery mode occurs in event
of an extreme input voltage
condition or complete utility
failure. The battery system
supplies power through the DC
to 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 two beeps every
5 seconds when the battery runs low (approximately 2 minutes remaining, but
this is user configurable). The AC Input LED will extinguish, and the Battery
LED will illuminate to warn that a utility problem has occurred. Each battery
level indicator represents a 20% capacity level. As capacity decreases, fewer
indicators remain illuminated. Refer to Troubleshooting section.
For approximate battery run times, refer to the Battery Run Times charts in
this manual. These times are approximates based on resistive load and an
ambient temperature of 77°F (25°C). To increase this time, turn off non-
essential pieces of equipment (such as idle computers and monitors) or add the
optional external battery cabinet.
Battery Recharge Mode
Once utility power is restored, the UPS resumes normal operation. At this
time, the Battery Charger begins recharging.
!
CAUTION
Turning OFF the UPS while in battery mode will result in loss of
output power.
Battery Mode Operation at 80-61%
AC INPUT BATTERY UPS ON BYPASS