The UPS provides power to the connected load from mains. The UPS converts mains to conditioned power for the connected load while recharging the batteries (float or boost charge).
The UPS transfers to battery mode if the mains supply fails. The UPS provides power to the connected load from the connected batteries for a finite period. When the mains supply returns, the UPS transfers back to normal mode.
Static Bypass Mode
The UPS supplies the load with power from the bypass source. If the conditions for normal or battery mode are not met, the load will be transferred from the inverter to the bypass source with no interruption in power to the load.
Maintenance Bypass Mode
In maintenance bypass mode, the mains is sent via the external MBB to the load. Battery backup is not available in maintenance bypass mode.
In ECO mode the UPS is configured to use static bypass mode as the preferred operation mode under predefined circumstances. The inverter is in standby in ECO mode and in case of interruption to the mains, the UPS transfers to battery mode and the load is supplied from the inverter.
The batteries will reach end of discharge if the interruption to the mains is longer than the battery runtime. If the UPS is programmed to auto-restart after end of discharge, the system will automatically restart after a delay when the mains returns.
Frequency Converter Mode
In frequency converter mode, the UPS presents a stable output frequency (at 50 or 60 Hz) and the static bypass switch is not available.
Risk of equipment damage or load drop
In frequency converter mode the UPS cannot run in static bypass or maintenance bypass mode. Before turning the UPS into frequency converter mode, you must contact a Schneider Electric-certified partner to make sure
Failure to follow these instructions can result in equipment damage.