Xtreme Power Conversion Corporation
M90S-4S User’s Manual
Page 21
Uninterruptible Power Supply
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Power On/Off
Turn on UPS or turn off UPS.
3.1.3 Audible Alarm
Audio Type
Description
Muted
Power on/off
Buzzer sounds two seconds
No
Bypass Mode
Beeping once every 2 minutes
Yes
Battery / Battery-test mode (normal
battery voltage)
Beeping once every 4 seconds
Yes
Battery / Battery-test mode (low
battery voltage)
Beeping once every second
Yes
Fault
Beeping continuously
Yes
Warnings (except overload)
Beeping once every second
Yes
Overload
Beeping once every second
No
3.2 Power module
Each power module is shipped with its own package. It has to be installed during the whole sys-
tem installation. The capacity of each power module is 6kVA/6kW. It includes a power fac-
tor correction rectifier, a battery charger, an inverter, a static bypass circuit and control circuit.
No.
Item
Description
1
Fan
The Power Module uses forced convection cooling by these fans. Cooling air enters
the module through ventilation grills at the front of the module and exhalation
exhausts through grills located at the rear of the module. Please do not block the
ventilation area.
2
Battery Start Button When AC input is not existing, use this button to start battery power for UPS.
3
LCD display
There is LCD display on the UPS module. It can show the UPS information and the
slave UPS information when operating in parallel.