R90 ONLINE USER’S MANUAL
UNINTERRUPTIBLE POWER SUPPLY (UPS)
Xtreme Power Conversion Corporation (Rev 3/7/14)
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programmable but typically set to be less than one electrical cycle (less than 15ms at 50Hz or less than
13.3ms at 60Hz).
ECO Mode
When the UPS is in AC Model and the requirement to the load is not critical, the UPS can be set to ECO
Mode in order to increase the efficiency of the power supplied. In ECO Mode, the UPS works in line-
interactive mode, so the UPS will transfer to bypass utility. When the AC is out of the set window, the
UPS will transfer from bypass to inverter and supply power from the batteries, with the LCD displaying
all related information.
Note:
ECO mode is not available in parallel system configurations.
Parallel Redundancy Mode (system expansion)
To achieve higher capacity and / or increase reliability, the output of up to ten (10) UPS modules can be
programmed to operate in parallel, with the built-in parallel controller in each UPS ensuring automatic
load sharing.
Turn On / Off the UPS
Connecting with Utility
The UPS is a double-conversion online UPS that may operate in the following alternative modes.
CAUTION!
MAKE SURE PROPER GROUNDING IS IN PLACE.
•
Set the Battery Breaker to the “ON” position according to the user manual.
•
Switch “ON” the UPS
CAUTION!
Check to see if the load is safely connected to the output of the UPS. If the load is not
ready to receive power from the UPS, make sure that it is safely isolated from the UPS
output terminals.
The internal fan of the UPS will start spinning; the UPS will perform self-diagnostics until the unit beeps
twice to show the UPS is normal. The UPS then goes to bypass, Utility LED and Bypass LED turn Green,
the inverter is now starting. When the inverter is checked “normal”, the UPS goes to Normal Mode and
the load is supplied power by the inverter.