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UPS OPERATION
O
PERATING MODES
The UPS can be configured for different operating modes. The following operating modes as listed below may be selected.
To configure these operating modes, the unit must be in stand-by.
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 mains power supply (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 optimize efficiency, in ECO MODE the load is normally powered through the bypass (any disturbances that occur within
the mains power supply 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. After the power supply returns within tolerance,
the load is switched back to bypass.
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 keep the SWMB switch handle blocked.
O
PERATING STATES
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
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).
B
ATTERY WORKING
When the UPS is supplying the output with the batteries present, if the mains power supply falls outside the pre-set tolerances, for
example in case of a blackout, voltage or frequency disturbance, the system automatically switches to BATTERY OPERATING
STATUS and draws power from the batteries to support the load.
Once the mains power supply is again clean and stable, the system automatically returns back to the pre-set operational mode.
T
EMPORARY BYPASS
During this operational state, the load is directly powered by the incoming mains supply, therefore, any input disturbances will directly
affect the connected load.