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Step 2.
Check the front panel display for active alarms or notices besides the "Battery mode" notice and
notices that indicate missing utility power. Resolve any active alarms before continuing. See
the Troubleshooting section.
Step 3.
Check the UPS status from the front panel to view the active alarms. Correct the alarms and
restart if necessary.
Shutting down the UPS
To shut down the UPS:
Step 1.
Press the
button on the UPS front panel. The UPS transfers to Standby mode.
Step 2.
Set the upstream circuit breaker (not provided) to the "O" position (Off) to switch off the utility
power.
Monitoring the UPS operating mode
The Lenovo UPS front panel indicates the UPS status through the UPS indicators. See "Control panel"
on page 7.
Operating modes: descriptions
Online mode
When the UPS is operating from utility power, the UPS is in Online mode: the
solid. The UPS monitors and charges the battery packs as needed and provides filtered power protection to
your equipment. High Efficiency and Energy Saving settings take the UPS out of online mode to minimize
heat contribution to the rack environment, but reduce the protection of your equipment. See "User settings"
on page 10.
Battery mode
When the UPS is operating without utility power, the alarm beeps once every ten seconds and the
indicator illuminates solid. The necessary energy is provided by the battery packs. When the utility power
returns, the UPS goes to Online mode.
If battery capacity becomes low while in Battery mode, the audible alarm beeps once every 3 seconds. This
warning is approximate, and the actual time to shut down might vary significantly. Shut down 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.
Bypass mode
In the event of a UPS overload or internal failure, the UPS powers your equipment directly from 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
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
26
3U Rack or Tower UPS RT5.0kVA and RT6.0kVA Installation and User's Guide
indicator illuminates.
indicator illuminates
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