Eaton 9PX Lithium-Ion User Guide DPD-9PX2206—Rev 01 27
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During Online mode, the indicator illuminates solid and the UPS is powered from the utility. The UPS
monitors and charges the batteries as needed and provides filtered power protection to your equipment.
Optional High Efficiency and Energy Saving settings minimize heat contribution to the rack environment. See
2.7 User Settings.
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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. If battery capacity becomes low while on
Battery mode, the audible alarm beeps once every 3 seconds. This warning is approximate, and the actual time
to shutdown may vary significantly. Shutdown all applications on the connected equipment because automatic
UPS shutdown is imminent. When utility power is restored after the UPS shuts down, the UPS automatically
restarts.
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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 20
minutes.
The UPS transfers to Bypass mode when:
• the user activates Bypass mode through the front panel.
• the UPS detects an internal failure.
• the UPS has an overtemperature condition.
• the UPS has an overload condition listed in 9.1 Model Specifications.
The UPS shuts down after a specified delay for overload conditions listed in 9.1 Model Specifications. The UPS
remains on to alarm the fault.
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When the UPS is turned-off and remains connected to AC source, the UPS is in Standby mode.
Depending if Bypass Standby setting is enabled, the output is powered but not protected.
The battery recharges when necessary and the communication ports are powered.
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From Online (or Battery) to Bypass mode. Press any button to activate the menu options, then select
Control and Go to Bypass.
From Bypass to Online (or Battery) mode. Press any button to activate the menu options, then select
Control and Go back normal.
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