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Conditions
Battery low
LED is On.
1 beep every 3 seconds.
No battery
LED is On.
Beep continuous.
Battery fault (Battery test
failed)
LED is On.
Beep continuous.
The UPS does not provide
the expected backup time.
Bypass mode
LED is on.
58
6U Rack or Tower UPS RT8.0kVA and RT11.0VA and Maintenance Bypass Installation and User's Guide
Possible cause
The UPS has been in Battery mode too
long.
This warning is approximate, and the
actual time to shut down might vary
significantly.
Depending on the UPS load and the
number of Extended Battery Modules
(EBMs), the "Battery Low" warning might
occur before the battery packs reach 20%
capacity.
The batteries are not connected, or the
circuit breaker on the batteries is off.
The battery test is failed because of a bad
battery pack, because the battery pack is
not connected battery pack, or because
the battery minimum voltage is reached
in Advanced Battery Management (ABM)
cycling mode.
The battery pack needs charging or
replacement; the load is greater than
expected.
An overload or a fault has occurred, or a
command has been received to put the
UPS into Bypass mode.
Action
Shut down equipment.
Connect all EBMs properly. Both batter
power and battery detection cables must
be connected.
If the condition persists, contact your
service representative.
Verify that all battery packs are properly
connected. Start a new battery test: if the
condition persists, contact your service
representative.
Apply utility power for 48 hours to charge
the batteries.
Using the LCD panel, measure the load
power that is being drawn.
Check for one of the following alarms:
overtemperature, overload or UPS failure.
Check whether a remote operator has
issued a command the UPS into Bypass
mode.
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