14 Connecting External Sources
SMA America, LLC
128
SI4548_6048-US-TB_en-13
Technical description
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 results in the generator being
disconnected (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 Stopping the Sunny Island
If the Sunny Island is stopped by the user, the generator is immediately disconnected. The generator
is then stopped (generator request, GnReq, is disabled). The power down phase (Cool) is skipped
and the system enters the stop time.
Electric shock through residual voltage in the off-grid system due to generator shut-off delays.
Death or serious injuries.
The power-down times depend on the generator type. During the power-down time, there is still line
voltage at the loads.
• Wait until there is no voltage on the generator.
• Measure voltage to ensure that none is present in the system.
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".
Generator can be operating while Sunny Island is stopped
If the generator is started directly at the generator management box or the generator, it can
only be stopped there again. Stopping the Sunny Island here only disconnects the generator
and the system transitions into the stop time (Lock).
Summary of Contents for Sunny Island 4548-US
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