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7. LED and LCD status as below:
UPS STATUS:
AC utility fails. The load is supplied by UPS in backup mode, and
battery power is approaching low level. Buzzer alarm beeps every
second.
ACTION:
UPS will shut down automatically. Please save data soon.
8. LED and LCD status as below:
UPS STATUS:
AC utility power fails and battery runs out. UPS has shut down
automatically.
ACTION:
UPS will restart up when AC utility power is restored. If AC
utility power failure is more than 6 hours, please follow storage
instruction.
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7. OPERATION MODES OF THE UPS
7.1 UPS System Block Diagram
7.2 Normal Operation
There are two main loops when AC utility is normal: the AC loop and the
battery charging loop. The AC output power comes from AC utility input and
passes through AC/DC rectifier, DC/AC inverter and static switch to support
power to load. The battery charging voltage comes from AC utility input and
converted by AC/DC charger to support battery-charging power.
