Eaton 9PXM - Operating Modes; Battery Mode; Low Battery Warning; Bypass Mode

72 4–20kVA Users Guide P-164000669 4–20kVA Users Guide P-164000669—Rev 09
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Battery Mode
When the UPS is operating during a power outage, the alarm beeps once every ten seconds and the indicator
illuminates solid. The necessary energy is provided by the battery. When the utility power returns, the UPS
transfers to Online mode operation while the battery recharges.
Low-Battery Warning
CAUTION
If the low battery warning occurs, shutdown all applications on the connected equipment because automatic
UPS shutdown is imminent.
If battery capacity becomes low while on Battery mode:
• The
indicator illuminates solid.
• The audible alarm beeps once every 3 seconds. (This warning is approximate, and the actual time to
shutdown may vary significantly.)
• After the UPS shuts down the UPS automatically restarts when utility power is restored (if Auto Restart is
enabled).
End of Battery Backup Time
• All the LEDs go OFF.
• The audio alarms stops.
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During discharge, the low battery alarm is activated if the remaining runtime goes below 3 minutes or less than
the setting capacity threshold (0% by default). This threshold can be modified.
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Bypass Mode
In the event of a UPS overload or internal failure, the UPS transfers your equipment to utility power. Battery
mode is not available and your equipment is not protected; however, the utility power continues to be passively
filtered by the UPS. The
indicator illuminates. Depending on overload conditions, the UPS remains in
Bypass mode for at least 5 seconds and will stay in this mode if three transfers to bypass occur within one
hour.
The UPS transfers to Bypass mode when:
• User or Service activates Bypass mode through the front panel LCD or by using an external bypass switch
(BPM or BPE).
• Overload between 105 and 110% for more than 30 seconds
• Overload above 115% for more than 200 msecs
• Output Short
• Hardware fault
• Over Temperature on heatsinks
Operating Modes