USER MANUAL-S600E
15
504402079908 S600E
Battery mode
As shown in Figure 1-4, the operating mode where the battery provides the backup power supply to the loads
through the rectifier and inverter is called battery mode. In the event of a mains failure, the system will transfer
automatically to battery mode with no interruption in the power supply to the load. When the mains power supply is
restored, the system will re-transfer automatically to normal operating mode without any manual intervention, and
with no interruption in the power supply to the load.
Rectifier
Inverter
Automatic inverter switch
Battery
Figure 1-4 Battery operating mode line diagram
Bypass mode
As shown in Figure 1-5, in normal mode, in the event of an inverter failure, inverter overload or inverter manual shut
down, the static switch will transfer the load from the inverter side to bypass side, with no interruption in the power
supply to the load. In this case, if the inverter and bypass are not synchronized, there will be a transitory interruption
in the power supply to the load (not exceeding 20ms).
Bypass input
Bypass input switch
Static switch
UPS output
Output switch
Maintenance mode
Figure 1-5 Bypass operating mode line diagram
As shown in Figure 1-6, if it is necessary to service the UPS or carry out maintenance work on it, you may use the
manual maintenance bypass switch to transfer the load to maintenance bypass, with no interruption in the power
supply to the load. This maintenance bypass switch is fitted in all UPS modules and rated for full load of one module.
ECO mode
Figure 1-6 Maintenance operating mode line diagram
If ECO mode is selected, all the power switches and the BCB are closed, and the system selects the bypass as the
preferred source of power for the load, in order to save energy. When the bypass supply frequency and voltage are
within normal limits (adjustable), the load is powered by the bypass, with the inverter on stand-by; when the bypass
voltage and/or frequency is outside these pre-defined and adjustable limits, the system will transfer to the inverter
output. In this mode, the system can charge the battery normally.
The battery cold start function may be used to switch the UPS on in Battery (charged) mode directly during mains failure.
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