PowerWalker VFI 1000RT LCD Manuel page 31

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 string is "CVCF".
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.).
2) The load should be derating to 70% in converter mode.
6.8 Abnormal mode
In abnormal mode such as Bus fault etc., the corresponding fault string would
be shown to indicate the operating mode of the UPS, and the background light
become red. For example "SHOR" would be shown when the load or the UPS
output is short. The LCD display is shown in the following diagram.
EN
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