Configuring the Battery-Backup System
The battery-backup operation mode is deactivated by default. To supply connected battery-backup appliances in the event of a power outage, the battery-backup operation mode must be activated. In addition, it is possible to set what proportion of the battery charge is to be retained for battery-backup operation.
The basic procedure for changing operating parameters is explained in another section ( > Changing Operating Parameters).
Procedure:
- In the parameter group Device > Operation, select the parameter Operating mode of the battery-backup system and set it to Automatic so that the battery-backup operation is activated automatically in the event of a grid failure.
- Set the parameter Minimum width of backup power area in the parameter group Battery > Areas of application. The value indicates the percentage of battery charge to be retained for battery-backup operation. This battery charge cannot be used in parallel grid operation. SMA Solar Technology AG recommends to set a value between 10 and 30.