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DPA 2 50 S 4 50 - 2 50 K W
O P ER AT I N G M A N UA L
By touching the Xtra VFI icon, the user acquires access to the Xtra-VFI settings. The Xtra VFI mode al-
lows turning into standby mode of a certain number of UPS modules according to the required power
capacity by the AC load.
The following conditions shall be considered before the Xtra-VFI function is activated:
• The UPS system is operating in double conversion mode.
• The UPS output switch (Q2) is closed
• The total number of UPS Modules inserted into the UPS system is equal to the total number of UPS
Modules in the system
• There is no active alarm within the system
• The battery test is not active
Xtra VFI Statuses
Xtra VFI can assume the statuses listed and described in the following table. The current status is
shown on the display on the screen Xtra VFI measurements (see figure 11.3.2-2 in the chapter 11.3.2).
MESSAGE
MEANING
“Disabled”
Xtra VFI is disabled (factory default).
“Active”
Xtra VFI is active.
“Rotation”
Module rotation in progress.
"To standby"
One or more modules are changing status from double-conver-
sion into standby mode.
“Sysmod invalid”
The “Total UPS Number” parameter has not been inserted.
“Sysmod wrong”
The “Total UPS Number” parameter does not correspond with the
quantity of the UPS modules in the system.
“General alarm”
Any alarm on any of the modules generates the general alarm.
"Q2 open”
One or more UPS output switch(es) are OPEN.
“Battery test"
One or more modules are performing the battery test
Standby mode
When the UPS module goes into the standby mode it turns off the inverter, in order to reduce power
consumption. The control logic as well as the rectifier and battery charger remains active. The UPS
module in Stand-by mode needs 40-50 ms to turn on the inverter and operate in double-conversion
mode if the system requires it.
Module rotation
Module rotation allows to keep the aging of the modules more or less balanced over time. The module
rotation will take place automatically, once a week, exactly 24*7 hours after the last time Xtra VFI has
been started (enabled) and it works in the following way: there is a form of intelligence that determines
how many UPS modules it is worth swapping. Once this is defined, the system turns ON (change status
from Standby mode to double conversion mode) the defined quantity of UPS modules first; then, once
those are in a steady state, it puts the same quantity of the UPS modules which were previously in dou-
ble conversion in the standby mode.
ONLY PEOPLE WHICH HAVE BEEN TRAINED BY SERVICE TECHNICIANS OF THE MANUFACTURER OR HIS
CERTIFIED SERVICE PARTNERS ARE ALLOWED TO ACTIVE OR DISABLE THE XTRA-VFI MODE IN THE UPS
SYSTEM.
5.1.5.7 X-tra VFI
