SMA SUNNY ISLAND 8.0H - Operating Procedure for Generator Control; Operating Procedure for Generators with Autostart Function

10 External Energy Sources in the Off-Grid System SMA Solar Technology AG
134 SI80H-60H-OffGrid-IA-en-11 Installation Manual
Automatic generator mode:
In automatic generator mode, the generator management controls the generator.
In automatic generator mode, the generator can be started and stopped manually at any time.
If the generator is stopped and the minimum stop time has elapsed, automatic mode is continued.
10.9 Operating Procedure for Generator Control
10.9.1 Operating Procedure for Generators with Autostart
Function
Automatic generator mode and generators without an autostart function
The generator management can control a signal generator using a multi-function relay.
The signal generator can indicate when you should start and stop the generator.
Event or state Result Internal transfer
relay
The generator
management requests the
generator.
The off-grid inverter starts the generator. Open, the
stand-alone grid is
not connected to
the generator.
The generator starts. The generator voltage builds up.
Generator management measures the time until
the generator voltage is within the configured
limiting values for voltage and frequency. If a
maximum time is exceeded, the generator
management aborts the generator start.
The generator voltage is
within the configured
limiting values for voltage
and frequency.
The generator management starts the warm-up
time.
The warm-up time is
running.
‒
The warm-up time ends. The off-grid inverter synchronises the stand-alone
grid to the generator voltage.