SMA Sunny Island 5048 - Procedure During Emergency Charge Mode

Troubleshooting/Problem Solving SMA Technologie AG
Page 152 SI5048-11:EE4206 Technical Description
What can I do when the QCG does not run once?
• Switch off the Sunny Island 5048 (section 9.3 "Deactivation" (Page 63)) and
switch it back on (section 9.1 "Activation / Startup" (Page 61)).
What happens when "MMC operation failed" appears on the display?
• You wanted to perform an action using the MMC/SD card, but it failed (see
section 10.9 "Display of Warnings and Errors" (Page 76)). Check the card (on
your PC/laptop) and use a new MMC/SD card, if necessary.
Why does my Sunny Island 5048 stay on even though I switched the DC circuit
breaker to Off?
• Your Sunny Island 5048 may be powered by the AC side. Switch off all AC loads
and disconnect them from the Sunny Island 5048 (see section 9.4 "Disconnecting
the Device from Voltage Sources" (Page 63)).
Why is my battery discharging even though the generator is running?
• The power produced by the generator is not reaching the Sunny Island 5048.
Check the voltage and frequency values. The fuses on the generator may have
been triggered.
What do I have to do if the Sunny Island 5048 continuously goes out after Low
Battery Mode (LBM) when restarting the device?
• Start the generator manually, if required (e.g.: Run1h). Note the warm up times:
5 minutes without charging current in BatProtMode may cause the device to go
into standby mode.
19.10 Procedure During Emergency Charge Mode
The Sunny Island 5048 cannot provide voltage with full amplitude with a deeply
discharged battery and can no longer synchronize with an existing grid or generator.
Using the emergency charge mode (ECM), you can charge the batteries in the
regulated voltage mode.
To charge the batteries in the emergency charge mode, either bridge the AC1 with AC2
(for a stationary generator) or connect a portable generator directly to AC1.
The battery management is active and the current set battery parameters and the
current charging phase are used. These values can be changed during "normal
operation".
In emergency charge mode, the generator management and grid management
are not active. The reverse power protection and relay protection function are not
active.