SMA SI 3.0-11 - Manual (Page 70)

9 Troubleshooting SMA Solar Technology AG
70 SI30M-44M-60H-80H-BE-en-30 Operating Manual
"MMC/SD operation failed !" is shown in the display?
An action with the SD memory card has failed.
• Use a computer to ensure that the SD memory card is free of errors.
•
Ensure that the data cable between the Sunny Remote Control and the Sunny Island is undamaged and that the
plugs are firmly inserted into the pin connectors.
The display shows "WRONG FILE SYSTEM"?
The SD memory card is not formatted with the FAT-16 or FAT-32 file system.
9.5.3 Questions Regarding the Battery
A battery cell is defective?
•
Remove the defective battery cell from the battery system. This reduces the rated voltage of the battery by the
voltage of the battery cell.
•
In the QCG, set the current rated voltage of the battery under New Battery (see Section 10.8 "Replacing the
Battery", page 78).
The state of charge of the battery is not 100 percent after completion of a full charge?
The power requirements of the loads might have been so high before completion of the full charge that the battery
could not be charged 100 percent.
• If necessary, select the parameter 222.03 AptTmFul and set to a longer time period.
The battery discharges even though the generator is running?
The Sunny Island may not have connected to the generator.
• Eliminate the cause (see Section 9.5.4 "Questions Regarding the Generator", page 70).
The power of the loads might exceed the power of the generator.
What do you need to do after replacing a battery current sensor?
•
Calibrate the battery current sensor (see the Commissioning section in the Sunny Island inverter installation
manual).
9.5.4 Questions Regarding the Generator
The Sunny Island does not connect to the running generator?
A high output power of the Sunny Island inverter when the battery state of charge is low may lead to the
Sunny Island not being able to raise the AC voltage in the stand-alone grid to the AC voltage of the generator.
The Sunny Island cancels the synchronization.
• To charge the battery, reduce the power of the loads.
The generator voltage might not be within the thresholds for voltage and frequency.
• Check whether the symbol " " is displayed permanently in standard mode.
If the " " symbol is not displayed, ensure that the fuse is not defective or the circuit breaker is activated.
If the " " symbol is not displayed permanently, the generator voltage is sporadically outside the thresholds.
•
Set the thresholds for voltage and frequency of the generator voltage (see the Sunny Island inverter
installation manual).
If the " " symbol is displayed permanently, the Sunny Island is in the warm-up period or is blocked for
connection. Tip: Check whether the Sunny Remote Control displays the " " warning symbol in standard mode.