PowerWalker VFI 1000T LCD, Manual

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6.5 EPO (Emergency Power Off)
It is also called RPO (Remote Power Off). On LCD display, the mode
code is “0”, the word of “EPO” are presented in the position of output
voltage.
It is a special status in which the UPS would shut the output off and
alarm. The UPS could not be turned off by pressing “OFF” button on
the panel, only after releasing EPO status by turning off the EPO
switch.
6.6 ECO mode (Economy mode)
It is also called high efficiency mode. In ECO mode, on LCD display,
the mode code is “5”.
After the UPS is turned on, the power used by the load is supplied
from the utility power via internal filter while the utility power is in
normal range, so the high efficiency could be gained in the ECO
mode. Once the mains is loss or abnormal, the UPS would transfer to
battery mode and the load is supplied continuously by the battery.
1) It could be enabled through the LCD setting or the software
(Winpower, etc.).
2) It is attention that the transfer time of UPS output from ECO mode
to battery mode is less than 10ms. But it is still too long for some
sensitive load.
6.7 Converter mode
In converter mode, on LCD display, the mode code is “6”.
The UPS would free run with fixed output frequency (50Hz or 60Hz)
in converter mode. Once the mains is loss or abnormal, the UPS
would transfer to battery mode and the load is supplied continuously
by the battery.
1) It could be enabled through the LCD setting or the software
(Winpower, etc.).