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34001813EN/AE - Page 45
3. Operation
3.6 Operating modes
Normal (double conversion) mode
This is the standard operating mode, set by default in the factory. Two possible cases:
ECO mode (single UPS only)
1 - Normal AC source available:
LED (31) is ON.
The load is protected by the UPS.
2 - Normal AC source not available:
LED (32) is ON.
The buzzer sounds intermittently.
The load is supplied by the UPS from battery power.
The display indicates any anomalies related to the AC source or the UPS as well as remedial action if applicable.
Press the function key (35) indicated by the display to turn the buzzer OFF.
The main advantage of this mode is that it reduces the consumption of electrical power.
ECO mode may be selected exclusively via the control panel on the UPS.
Three possible cases:
1 - Bypass AC source available:
LED (31) is ON.
The load is supplied in ECO mode.
2 - Bypass AC source not available:
LED (31) is ON.
The buzzer sounds intermittently.
The load is automatically supplied in normal mode via the Normal AC
input.
3 - Both normal and Bypass AC sources not available or out of
tolerance:
LED (32) is ON.
The buzzer sounds intermittently.
The load is supplied by the UPS from battery power.
The display indicates the UPS operating status conditions and the required action.
31 32 33
31 32 33
31 32 33
31 32 33