2 Safety
SMA Solar Technology AG
Operating manual STP50-4x-BE-en-23 15
A country data set must be set for feed-in operation
From firmware version 3.13.##.R, the activation conditions for feed-in operation were
changed.
To ensure the inverter begins feed-in operation during initial commissioning, a country data set
must be set (for instance via the installation assistant on the user interface of the product, or via
a communication product).
If no country data set is set, then feed-in operation will be stopped. This state is signaled by the
green and red LEDs flashing simultaneously.
The inverter will automatically start feed-in operation only after the inverter configuration is
completed.
The country data set must be set correctly.
If you select a country data set which is not valid for your country and purpose, it can cause a
disturbance in the PV system and lead to problems with the grid operator. When selecting the
country data set, you must always observe the locally applicable standards and directives as
well as the properties of the PV system (e.g. PV system size, grid-connection point).
• If you are not sure which standards and directives are valid for your country or purpose,
contact the grid operator.
When the utility grid is disconnected, the parameter settings are not applied
If you have made parameter settings and subsequently disconnected the utility grid without
having first disconnected the DC side from the inverter, the settings cannot be saved. Proceed
as follows if you would like to disconnect the utility grid after you have made parameter
settings:
• Disconnect the DC side from the inverter.
• Wait 5 minutes.
• Disconnect the utility grid.
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