SMA SUNNY ISLAND 4548-US Operating Manual page 78

9 Switching On and Off
4. Switch on the Sunny Island as described in section (see Section 9.1 "Switching On", page 75).
Charging the batteries
After recommissioning, it is important that the batteries are charged. If an autostart generator is
present in the stand-alone grid, the Sunny Island will request the generator after a few minutes.
5. Monitor the generator startup and check that the Sunny Island switches to charge mode.
6. Check for error-free functioning of all other energy generators in the system.
Battery-preservation mode after recommissioning
If, after recommissioning, the Sunny Island immediately switches into battery-preservation mode
(see Section 13.6 "Battery-Preservation Mode", page 115), disconnect all loads from the AC
output.
The loads can be reconnected once the Sunny Island enters the state of charge. A precondition
for this is that a generator capable of providing the required power is connected (see
Section 20.10 "Procedure during Emergency Charge Mode", page 223).
78 SI4548-6048-US-BE-en-21
SMA Solar Technology America LLC
Operating Manual