Generator Operation; Manual Generator Operation - SMA SUNNY ISLAND 4548-US Operating Manual

14 Connecting External Sources
If the generator is started manually in this operating mode, the Sunny Island detects the running
generator and connects it once the warm-up time has expired. If you stop the generator externally,
this is detected, the generator disconnected and the stand-alone grid is still supplied.
Generator request
If the generator is running after being externally started and a generator request occurs, the
GnReq signal is disabled until the generator is externally stopped again and the stop time has
expired.

14.1.3 Generator Operation

The Sunny Island allows automatic operation (depending on the state of charge or load) (see
Section 14.1.5 "Automatic Generator Operation", page 123). In addition, manual operation is also
possible.

14.1.4 Manual Generator Operation

The manual operating modes for the generator management are tripped using the parameter
"540.01 GnManStr". Here, a distinction is made between the following operating modes:
Auto: In this operating mode, the generator is automatically started due to the settings.
This includes the start via the state of charge or the load power or by the request for
a manual equalization charge.
("520.01 ChrgSelMan" = Start).
Stop: The generator is manually stopped. The current generator request is canceled –
immediate disconnection from generator and change to lock state. Once the lockout
time has ended, the generator switches into automatic operation.
Start: Manual generator start – the generator runs "continuously" until stopped. The
generator can only be manually stopped.
122 SI4548-6048-US-BE-en-21
SMA Solar Technology America LLC
Operating Manual