SMA Solar Technology AG 6 Electrical Connection
Installation Manual SB30-50TL-21-IA-en-21 49
SMA Grid Guard-protected country data sets
In some countries, the local connection conditions demand a mechanism which prevents the feed-in
parameters from being changed. Therefore, certain country data sets are protected against
unauthorised changes. They can only be unlocked with a personal access code - the
SMA Grid Guard code.
SMA Grid Guard-protected country data sets are automatically blocked for 10 feed-in hours after
commissioning, or after the last alteration. If the country data set is changed after these 10 feed-in
hours, the inverter does not accept the changes and displays the error message "Grid param. locked".
If, however, a later change to the country data set only relates to a change of the display language
via the rotary switches in the inverter, this change is immediately applied.
It is also possible to configure country data sets (parameter "CntrySet" or "Set country standard"), and
to lock or unlock these manually via a communication product. To lock a data set, enter the digit
sequence "54321" instead of the password in the SMA Grid Guard code field. The data set can only
be unlocked by entering a personal, 10-digit SMA Grid Guard code which is valid for a maximum of
10 feed-in hours. The application form for the personal access code is available at
www.SMA-Solar.com in the "Certificate" category of the respective inverter.
The language can be configured without a password, regardless of the country data set.
Changing parameters in SMA Grid Guard-protected country data sets
If the parameters within protected country data sets are changed, these are no longer protected
and instead of the standard "ADJ" or "Special setting" is displayed. In this case, a change to
parameters is not locked automatically after 10 feed-in hours, but has to be locked manually.
To manually lock the parameters, set the SMA Grid Guard code to "54321".
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