SMA SUNNY ISLAND 8.0H - Operating Procedure for Generators with Genman

10 External Energy Sources in the Off-Grid System SMA Solar Technology AG
138 SI80H-60H-OffGrid-IA-en-11 Installation Manual
10.9.3 Operating Procedure for Generators with GenMan
Event or state Result Internal transfer
relay
The generator
management requests the
generator.
The off-grid inverter signals to GenMan that the
generator is requested.
Open, the
stand-alone grid is
not connected to
the generator.
GenMan starts the
generator.
The generator voltage builds up.
The warm-up time
configured at GenMan
begins.
The generator management measures the time
until GenMan signals to the off-grid inverter that
the warm-up time has ended. If a maximum time
is exceeded, generator management aborts the
generator start.
GenMan signals to the
off-grid inverter that its
warm-up time has
successfully ended.
The off-grid inverter
synchronises the stand-
alone grid to the generator
voltage.
‒
The stand-alone grid is
synchronised.
The off-grid inverter connects the stand-alone
grid to the generator.
Closed, the
stand-alone grid is
connected to the
generator.
The stand-alone grid is
connected to the generator.
The generator is feeding current into the stand-
alone grid.
The generator management starts the minimum
run time.
The minimum run time is
running.
Even if the generator management no longer
requests the generator, the stand-alone grid
remains connected to the generator.
The minimum run time ends. If the generator management continues to
request the generator, the stand-alone grid
remains connected to the generator.