14 Connecting External Sources SMA America, LLC
120 SI4548_6048-US-TB_en-13 Technical description
The following figure shows the wiring for a generator capable of autostart:
If the generator is started manually in this operating mode, the Sunny Island detects the running
generator and connects once the warm-up time has expired. If the generator is externally stopped,
this is detected, the generator is disconnected and the stand-alone grid is continued to be supplied.
14.1.3 Generator Operation
The Sunny Island allows automatic operation (depending on state of charge or load)
(see Section 14.1.5 "Automatic Generator Operation", page 122). In addition, manual operation is
also possible.
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.
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