SMA Solar Technology AG Connecting External Sources
Technical Description SI5048-TB-TEN110340 121
14.1.9 Stopping the Generator
If the generator was started via the Sunny Island (automatically or manually), it can be manually
stopped at any time using the "540.01 GnManStr" parameter. This disconnects the generator
(the minimum run time is not taken into account here) and the after-run time (Cool) is skipped.
Afterwards, the system enters the stop time (Lock).
14.1.10 Disturbances
Reverse Power
If the reverse power ("234.13 GnRvPwr" parameter) set for the "234.14 GnRvTm" time is exceeded,
the generator is disconnected and stopped. The follow-up time (Cool, parameter
"234.10 GnCoolTm") is skipped and the system transitions into the minimum stop time (Lock).
After reverse power, connection is blocked for at least "231.03 ExtLkTm" or "234.09 GnStpTmMin".
Generator Failure
If a generator failure is detected (failure on the master phase), the generator is disconnected
immediately and a stop signal occurs on generator. The system enters the minimum stop time (Lock).
Generator Phase Failure
The failure of a phase (e.g. broken fuse) on a slave device is treated as a phase failure. The slave
device then disconnects this phase. If the phase is detected as being available again, it is reconnected
after the warm up time "234.12 GnWarmTm" has elapsed.
The phase failure on the master device is treated as a generator failure (see above).
DANGER!
Danger to life due to high voltages.
The follow-up time depends on the generator type. During the follow-up time, there is still
grid voltage at the loads.
• Wait until there is no voltage measurement.
Generators with manual start option
Generators with the "manual" start option can generally only be started and stopped at the
generator.
Generator start prevented
If the generator start is to be disabled after a manual stop, this must be performed by setting
the "235.01 GnAutoEna" parameter to "Off".
Reverse power
Observe the reverse power which the Sunny Island can generate. The generator must
provide this protection, observe the indications of the generator manufacturers regarding
this!
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