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

SMA Solar Technology America LLC
Run1h: Operation for one hour. Once the lockout time has expired, the transition back into
automatic mode follows.
An equalization charge can be manually started using the parameter "520.01 ChrgSelMan". This
sets the battery management (see Section 13 "Battery Management", page 108) in the equalization
charge state and the generator is requested. This request persists until equalization charge has been
completed.
The following flowcharts provide an overview of the start/stop behavior of the Sunny Island during
manual generator operation:
Generator Interface "234.07 GnStrMod" = Manual; Start at the Generator
1 Manual generator start
2 "Generator is running" detected, beginning of warm-up phase
3 Internal generator request is ignored
4 Warm-up phase is completed, generator is connected
5 Generator current limit
6 Current is reduced, battery absorption phase
7 Manual generator stop, disconnection of the generator
8 Minimum stop time has expired
* Transfer relay
Generator Interface "234.07 GnStrMod" = Autostart; Start at the Generator
1 Manual generator start
2 "Generator is running" detected, beginning of warm-up phase
3 Warm-up phase completed
4 Generator is connected
5 Generator current limit
6 Current is reduced, battery absorption phase
7 Manual generator stop, disconnection of the generator
8 Generator is disconnected, beginning of stop time
9 End of stop time
* Transfer relay

14.1.5 Automatic Generator Operation

In automatic operating mode (parameter "235.01 GnAutoEna"), the Sunny Island automatically
defines the settings (depending on battery state of charge or load) as to when the generator starts
and how long it runs. The automatic operating mode is activated using GnAutoEna = On (default). If
GnAutoEna = Off, the automatic operating mode is deactivated.
In addition, the user can also manually start and stop the generator, if required.
Operating Manual
14 Connecting External Sources
SI4548-6048-US-BE-en-21 123