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If the unit nears full battery discharge
If the unit comes within approximately three (3) minutes of full battery
discharge, the reboot command with the halt option will execute, as
described in "If ac power does not return" on page 64. The PowerTrust
UPS will issue three beeps every 10 seconds.
For more information, see the PowerTrust System Guide (PN 3329-
90002) that accompanied the PowerTrust UPS.
The operating system should have been configured for the UPS as part of
the system installation. See "Configuring a PowerTrust UPS on V-Class
systems" on page 62.
ac power fails without automatic shutdown
enabled
The PowerTrust Uninterruptible Power System (UPS) will supply power
to the system from a battery for approximately 15 minutes if the battery
is fully charged.
1. You will hear an auditory alarm (a single beep every 10 seconds). If
Do NOT press the switch on the PowerTrust UPS labeled Output On/
CAUTION
Output Off. Pressing this switch would shut off power to the node and
other units connected to the UPS.
2. With the OS properly configured for UPS, you will see UPS messages
3. The indicators on the PowerTrust UPS front panel labeled "AC
If you anticipate a long power outage
If you anticipate a long period without ac power, you may want to
shutdown your system during the 15 minutes of reserve power.
1. Follow the usual OS shutdown procedure.
2. Power off the protected equipment.
3. Set the Output On/Output Off switch to Output Off.
Chapter 6
desired, you can turn off the auditory alarm by pressing the switch on
the PowerTrust UPS labeled Silence Alarm.
on the console. See Appendix A in PowerTrust System Guide (PN
3329-90002) for explanations of the messages.
Output" and "Battery Power" will be lit.
Power
If ac power fails
65
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