Operator’s Guide for Rugged-UPS
TM
1252 Series
91-0120 Rev. B 13
© Acumentrics Corporation 2007-2008
3. Load Indicators
Measures and displays the load being applied to the Rugged UPS
. When all five indicator lights
are illuminated a full load (1250 VA) is being applied to the Rugged UPS
. When there are NO
indicators illuminated there is NO load being applied to the Rugged UPS
.
4. Battery Status Indicators
Displays the charging level of the battery pack. When ALL five indicator lights are illuminated the
battery pack is fully charged to its present capacity and on external power. When battery pack
charge is near depletion, the last LED blinks and the alarm beeps one per second before low-battery
shutdown occurs.
When the UPS switches to internal DC, the battery pack charge decreases and fewer LED’s remain
illuminated and operating time becomes shorter.
5. On AC
Line
This indicator is illuminated when the Rugged UPS
is supplying power to the loads from the AC
connection source. This indicator will begin flashing during 80 VAC and 265 VAC operation to
indicate the operating point is close to tolerance. This indicator is NOT illuminated when the AC
source drops below 80 VAC causing the Rugged UPS
to switch to external DC. If external DC is
unavailable the Rugged UPS
will switch to Internal DC.
6. On External DC
An isolated DC input of 22-32 VDC or optional 20 – 32V VDC volts allows for operation from vehicle
power.
7. On Internal DC
An audible tone briefly sounds and then the indicator illuminates when the unit is supplying power to
the loads from the internal battery pack.
8. Replace Battery
This indicator illuminates when the battery has reached the end of its usable life (battery voltage is
below 19.8 VDC). Momentarily holding the ON switch for one second, after replacing the battery, will
clear the “Battery Fault” indicator without turning the device OFF.
9. Overload
This indicator will remain illuminated and an audible tone will continuously sound when the Rugged
UPS
capacity load is exceeded by the loads connected to the Rugged UPS
.
10. Over Temperature
This indicator will remain illuminated and an audible tone will continuously sound when the Rugged
UPS
internal operating temperature has exceeded safe operating limits. The Rugged UPS
will
shut down if the condition persists.
