IBM 1500VA, Installation And Maintenance Manual, Page: 30 / 68

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On the Meter and Notice/Alarm screens, to lock the screen (prevent the screen
from returning to its default after timeout). A locked screen displays a small key
image near the status icon. To unlock the screen, press any button to perform its
usual function.
On/off: Press this button to turn on the uninterruptible power supply. Press and
hold this button for 3 seconds to turn off the uninterruptible power supply.
The following display button shortcuts are available.
Table 5. Display button shortcuts
Shortcut Buttons
Disable the battery start
feature Press and hold the escape (X) and down ( ) buttons for 3
seconds. The uninterruptible power supply beeps once to
indicate that Battery Start is disabled for the next ac power
cycle.
Set the display to English Press and hold the escape (X), down ( ), and OK buttons for
5 seconds.
Operating modes
The uninterruptible power supply has the following operating modes:
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Normal
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Battery
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Standby
Normal mode
The uninterruptible power supply supplies the load power from utility power. The
uninterruptible power supply monitors and charges the batteries as needed and
provides filtered power protection to your equipment.
Battery mode
The uninterruptible power supply supplies the load power from battery. The status
text flashes, and the uninterruptible power supply beeps every 5 seconds. When the
utility power returns, the uninterruptible power supply transfers to Normal mode
operation while the battery recharges.
Standby mode
When the uninterruptible power supply is turned off and remains connected to the
power source, the uninterruptible power supply is in Standby mode. The
uninterruptible power supply is not supporting the load but is ready to assume the
load on command.
Turning on the uninterruptible power supply
Note: Before you use this feature, the uninterruptible power supply internal
batteries must have been connected. For more information, see “Connecting the
internal battery” on page 12.
After the uninterruptible power supply is connected to a power outlet, it enters
Standby mode.
20
1000 VA and 1500 VA LCD Tower UPS: Installation and Maintenance Guide