SMA SI 5048, Техническое описание

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SMA Solar Technology AG Troubleshooting
Technical Description SI5048-TEN093630 199
Why does the "VAC-Low" error (output voltage too low) also occur when the
Sunny Island is started?
• A permanent short-circuit exists in the stand-alone grid. Check the AC output connections of the
stand-alone grid (see section 6.3 ”AC Connection” (page 35)).
• The loads connected to the stand-alone grid are too heavy. The power/electrical energy of the
Sunny Island is not sufficient to supply the loads. Switch off some of the loads and restart the
Sunny Island.
What do I do when a battery cell can no longer be used?
• Remove the unusable cell from your battery bank. Start the Sunny Island and change the battery
voltage in the QCG under "New Battery".
What can I do when the QCG does not run?
• Switch off the Sunny Island (see section 9.3 ”Switch off” (page 62)) and restart it
(see section 9.1 ”Activation” (page 60)).
What happens when "MMC operation failed" appears on the display?
• You wanted to perform an action using the SD card, but it failed (see section 10.9 ”Display of
Warnings and Failures” (page 79)). Check the card (on your PC/laptop) and use a new SD
card, if necessary.
Why does my Sunny Island stay on even though I switched the DC circuit breaker
to Off?
• Your Sunny Island may be powered by the AC side. Switch off all AC loads and disconnect
them from the Sunny Island (see section 9.4 ”Disconnect the device from voltage sources”
(page 62)).
Why is my battery discharging even though the generator is running?
• The power produced by the generator does not reach the Sunny Island. Check the voltage and
frequency values. The fuses on the generator may have been triggered.
• The consumer power exceeds the generator power "234.03 GnCurNom".
– Check error messages Find the cause.
Why is the deactivation defined by the SOC in case of a full or equalization
charge and generator start in the second time zone?
• Equalization charge has a higher priority than silent time.
Why is the SOC not at 100 % even after full charging has been completed?
• Set a longer absorption period.
How is it possible to ensure that the maximum battery charging current is
correctly calculated after a reinstallation of the battery current sensor?
• Re-calibrate the battery current sensor using the "225.04 BatCurAutoCal" parameter with the
setting "Start".