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Smart-UPS RT 2400/3000 VA Tower/Rack-Mount UPS User Manual 9
Operation
Display Panel Functions
On Battery Operation
The UPS switches to battery operation automatically if the utility power fails. While running On Battery, an
alarm beeps four times every 30 seconds.
Press the button to silence this alarm. If the utility power does not return, the UPS continues to supply
power to the connected equipment until the battery is fully discharged.
When 2 minutes of run time remain, the UPS emits a continuous beeping. If PowerChute is not being used,
files must be manually saved and the computer must be turned off before the UPS fully discharges the
battery.
Refer to www.apc.com for information on battery runtimes. The UPS battery runtime differs based on usage
and environment.
Utility Voltage Measurement
1. Press and hold the button to view the utility voltage bar graph indicator.
2. After a few seconds, the five-LED Battery Charge indicator will show the utility input voltage.
3. Refer to the appropriate voltage (100 or 110/120) reading. Values are not listed on the UPS. The actual
input voltage is between the displayed value on the list and the next higher value.
Feature
Button
Feature Title Function
Power On Press this button to turn on the UPS. Continue reading for additional
capabilities.
Power Off Press this button to turn off the UPS output.
N
OTE: The battery will continue to charge and the fans will continue to run
while the UPS is connected to the utility.
Cold Start When there is no utility power and the UPS is off, press and hold the button
to power up the UPS and connected equipment.
N
OTE: The UPS will emit two beeps. During the second beep, release the button.
Self-Test Automatic: The UPS performs a self-test automatically when tuned on, and
every two weeks thereafter (by default). During the self-test, the UPS briefly
operates the connected equipment On Battery.
Manual: Press and hold the button
for a few seconds to initiate the self-test.
Feature Display Feature Title Description
Diagnostic Utility
Vo l t a g e
The UPS has a diagnostic feature that indicates the utility voltage
coming into the UPS. The UPS starts a self-test as part of this
procedure. The self-test does not affect the voltage display. See
“Troubleshooting,” beginning on page 15 for additional information.
118.0
100V
108.7
99.3
90.0
80.6
138.2
110/120V
128.8
119.5
110.1
100.8