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3-8. Operating Mode/Status Description
If parallel UPS systems are successfully set up, it will show one more screen with “PAR” in parameter 2 and
be assigned number in parameter 3 as below parallel screen diagram. The master UPS will be default
assigned as “001” and slave UPSs will be assigned as either “002” or “003”. The assigned numbers may be
changed dynamically in the operation;
Operating mode/status
AC mode
Description
When the input voltage is within acceptable range, UPS will provide pure
and stable AC power to output. The UPS will also charge the battery at
AC mode.
LCD display
ECO mode
Description
When the input voltage is within voltage regulation range and ECO mode
is enabled, UPS will bypass voltage to output for energy saving.
LCD display
CVCF mode
Description
When input frequency is within 46 to 64Hz, the UPS can be set at a
constant output frequency, 50 Hz or 60 Hz. The UPS will still charge
battery under this mode.
LCD display
Battery mode
Description
When the input voltage is beyond the acceptable range or power failure,
UPS will backup power from battery and alarm will beep every 4 seconds.
LCD display
