Setting parameters for automatic backup operation
Qualified person
Procedure:
Automatic backup operation must be set in the Operation.BckTyp parameter (Configuration of the backup type) so that the automatic transfer switching device can automatically switch to automatic backup operation in the event of a grid failure.
Ensure that the parameters are set to the default values recommended by SMA Solar Technology AG Changing parameters.
Parameter | Name | Settings | Description |
|---|---|---|---|
Operation.BckTyp | Configuration of the backup type | Off Automatic backup operation Backup Secure Operation | Configure the Automatic backup operation to enable the automatic transfer switching device to switch to automatic backup operation mode automatically in the event of a grid failure. |
Operation.BckSwOnDl | Minimum duration of grid fault for start of automatic backup operation | 0 s to 600 s | Time after a grid failure before switching to automatic backup operation. 5 s is set by default. |
Operation.BckSwOffDl | Minimum duration of grid recovery for deactivation of backup operation | 1 s to 600 s | Time after restoration of the AC grid before switching back to parallel grid operation. 300 s is set by default. |
Operation.BckCbSwDl | Interruption of load supply during the transition from automatic backup to feed-in operation | 0 s to 60 s | Time during which backup loads are not supplied while switching from automatic backup operation to parallel grid operation. 5 s is set by default. |
Operation.ManRstr.IsOn | Manual restart activated | Yes No | Select Yes to activate manual restart. |
Operation.ManRstr.ManRstrBckSc | Activation of Manual Restart for reoccurring short-circuit faults in backup operation mode. | On Off | On: The inverter remains in fault mode. Off: In the event of a fault during automatic backup operation, the inverter repeatedly attempts to restart until the fault is cleared. On is set by default. To fulfill the requirements of VDE-ARE-2510, this parameter must be set to On. The parameter settings must be made differently depending on the country-specific standards. |
Bck.AMaxLim | Limit for maximum continuous AC current in backup operation | Entering value in A | Maximum continuous AC current in backup operation, depending on the inverter. |
Bck.Vset | Voltage in backup operation | Enter the value in volts (V) | Voltage during backup operation, depending on the inverter. |