14 Troubleshooting
SMA Solar Technology AG
Operating manual
SI44M-80H-13-BE-en-15
142
Event number
Message, cause and corrective measures
504
505
Grid incident
The frequency of the generator or the utility grid of the Sunny Island at line conductor Lxx is
too low or too high.
Corrective measures for generator:
• The generator may be overloaded. Reduce the total power of the loads by staggering
their use over time.
Change the frequency thresholds of the generator voltage. As an aid to this, observe
and evaluate the measured values
Grid frequency of external grid connection
during ongoing operation.
Adjust the frequency of the external energy source.
Corrective measures for utility grid:
• Contact the Service.
803
Grid incident
The voltage and/or frequency of the generator or the utility grid is/are outside of the config-
ured range.
Corrective measures for generator:
• Configure the thresholds for generator connection. As an aid to this, observe and
evaluate the measured values
Voltage of external grid connection
and
Grid
frequency of external grid connection
during ongoing operation.
• Adjust the generator voltage and/or generator frequency.
Corrective measures for utility grid:
• Contact the Service.
1304
Grid connection installation error
Assignment of the line conductors of the external energy source to the
AC2
connections of
the Sunny Island does not result in a right-rotating magnetic field.
Corrective measures:
• Ensure that the master is connected to L1, slave 1 is connected to L2, and slave 2 is
connected to L3.
