What to do if MMC operation failed message appears on the SMA Inverter display?
If you see an 'MMC operation failed' message, it means an action using the SD card has failed. Check the card on your PC/laptop and use a new SD card if necessary.
What to do if it is not possible to change parameters of SMA Sunny Island 5048?
If you're unable to change parameters on your Sunny Island, first verify that you've entered the installer password correctly and are in 'Installer Level'. Also, note that if you're in the '100-Meters' or '300-Diagnose' menu, you can only read the data values. Some parameters can only be changed in standby mode, so stop the Sunny Island.
What to do if VAC-Low error (output voltage too low) occurs when SMA Sunny Island is started?
If you're getting a VAC-Low error when starting your Sunny Island, there might be a permanent short-circuit in the stand-alone grid. Check the AC output connections. It could also mean that the loads connected to the stand-alone grid are too heavy. Try switching off some of the loads and restarting the Sunny Island.
Why is my SMA Inverter not connecting to the running generator?
There could be several reasons why your Sunny Island isn't connecting to the generator. First, check the generator fuse. If that's fine, see if the power allowed to be fed back into the generator during the permissible time has been exceeded. If it has, set the '540.02 GnAck' parameter to Ackn. If the generator control relay (GnReq) is open, ensure the generator is set to autostart, if required. Also, if a GenMan is used, check the return signal (DigIn) as the generator can only be started using GenMan.
What to do if my SMA Inverter battery is discharging even though the generator is running?
If the generator is running but the battery is still discharging, it could be because the power produced by the generator isn't reaching the Sunny Island. Check the voltage and frequency values. Alternatively, the consumer power might exceed the generator power, so check for any error messages to identify the cause.
Why is it that high outputs are being transferred back and forth between the clusters in the cluster network of my SMA Inverter?
If high outputs are being transferred back and forth between the clusters in the cluster network, the nominal frequencies and voltages are likely defined differently. Correct this by adjusting the appropriate parameters.
What to do if I can't change the parameters on my SMA Inverter?
If you cannot change the parameters on your SMA Inverter, verify that you have entered the installer password correctly and are in "Installer Level". Also, confirm that you are not in the "100-Meters" or "300-Diagnose" menu, as data values can only be read there. Some parameters can only be changed in standby mode or in the QCG. Stop the Sunny Island to enter standby mode; however, be aware that this will cause a dropout in the stand-alone grid system.
Why is the Multicluster system not supplying full power output on my SMA Sunny Island 5048 Inverter?
The Multicluster system might not be supplying full power output if an extension cluster's slave has failed. Although the system continues to operate, the output on the phase of the failed device will be lower.
Why is it that one (or more) extension clusters remain in standby, although the main cluster is operating properly on my SMA Inverter?
If one or more extension clusters remain in standby while the main cluster operates correctly, check the communication cable between the master devices. If the cable is disconnected, the main master cannot forward the "Start" command to the extension master, causing the devices to remain in standby.
Why is it not possible to set any combinations of voltage and frequency limits on my SMA Sunny Island 5048 Inverter?
The possible ranges for voltage and frequency of the Sunny Island allow the combination of special frequencies and voltages that result in transformer saturation and are therefore not permitted.
General| Output Voltage | 230 V |
|---|---|
| Nominal AC Voltage | 230 V |
| AC Frequency | 50 / 60 Hz |
| DC voltage range | 40 - 60 V |
| Battery Voltage | 48 V |
| Efficiency | 95 % (typical) |
| Weight | 40 kg |
| Protection class | IP 21 |
| Maximum AC Output Power | 5000 W |
| Maximum Efficiency | 96 % |
| Dimensions (H x W x D) | 550 x 450 x 230 mm |
| Operating temperature range | -25 °C to +60 °C |
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