14
UPS OPERATION
O
PERATING MODES
The UPS can be configured for different operating modes. The following operating modes as listed below may be selected.
ON
LINE
MODE
When in ON LINE mode, the system operates in ON LINE double conversion. This mode provides maximum protection for the load.
During operation the energy coming from the electrical supply network (AC), is converted into a clean and stable output.
The voltage supplied to the load is a perfect sinewave, with the frequency and voltage independent of the incoming mains supply (VFI
technology). During this mode, the batteries are constantly maintained under charge.
ECO
MODE
In order to optimise efficiency, in ECO MODE, the load is normally powered via the bypass (any disturbances that occur within the
network can affect the load). In the event of a mains power supply failure or if the power supply is not within the pre-set tolerances,
the UPS will seamlessly switch to ON LINE operation automatically. Approximately five minutes after the power supply returns within
tolerance, the load is switched back to bypass.
SMART
ACTIVE
MODE
The UPS may be set in SMART ACTIVE mode during which, according to the statistical data of the quality of the mains power supply,
the UPS will autonomously decide the most appropriate operating mode between ON LINE and ECO MODE.
FREQUENCY
CONVERTER
MODE
The system can be configured in this mode to generate a fixed output frequency different from the input frequency. This configuration
automatically disables the bypass line. FREQUENCY CONVERTER mode can be operated with and without connected batteries.
WARNING:
Do NOT switch on the SWMB (manual bypass switch) when the UPS is in FREQUENCY CONVERTER mode.
To prevent maintenance bypass operation, the user shall lock the SWMB switch handle. To first configure this operating mode, open
the SWOUT (Output switch).
STAND
BY
OFF
MODE
The UPS is set to operate only in an emergency: when the mains power is present, the load is not powered and the battery remains
charged; in the event of a mains supply failure, the load is powered by the inverter from the batteries, and is then powered off once
the mains supply returns. The activation time is less than 0.5 sec. When the mains supply returns, the output is powered off after a
certain period of time (configurable) has passed. In default configuration, if the mains returns, the output is immediately powered off
(default time 0s).
O
PERATING STATUS
The UPS may be in a different status for each operating mode explained above. The following is a list of possible operating states.
N
ORMAL
When the UPS operates "normally" in the selected Operating Mode without any alarm.
In this condition the selected "Operating Mode" is displayed in light blue.
S
TAND
-
BY WITH BATTERY CHARGER OFF
This is the default status when the UPS is supplied. The UPS is powered but the system is in idle status (no power stages are active).
S
TAND
-
BY WITH BATTERY CHARGER ON
When the UPS is supplied, the user can turn on the battery charger without turning on the whole UPS. In this condition the load is not
supplied.
