14 Connecting External Sources
SMA America, LLC
126
SI4548_6048-US-TB_en-13
Technical description
14.1.7 Run Times
If the generator is started (or the Sunny Island detects an external generator start), the warm-up phase
starts. If, during this time, the voltage or frequency detected is not within the permissible range, the
warm-up time begins again.
If the generator cannot be connected at the GenMan within twice the time set at
"234.12 GnWarmTm" + 2 minutes, the connection process is canceled and a new attempt is made.
After three attempts, the system changes to error state (Fail "GnNoSync").
If the generator has been connected, the minimum run time begins ("233.08 GnOpTmMin"
parameter). The generator remains connected during this time, even if in the meantime the generator
request is no longer pending.
If the minimum run time has ended and there is no request present, the generator disconnects and
enters the after-run (Cool) phase. If this power-down phase is completed after the
"234.10 GnCoolTm" time, the generator is stopped.
If a generator fault (e.g. generator failure) is detected, the generator is also disconnected and then
stopped immediately. In doing so, the power-down time is skipped.
Once the stop time ("234.09 GnStpTmMin" parameter) has elapsed, the generator is ready for the
next request.
If a generator fault is detected several times and the number of autostarts ("235.02 GnAutoStr"
parameter) has been exceeded, the system transitions into the locked error state.
This state lasts for the time period set at "234.11 GnErrStpTm". Once this time has expired, the
generator is ready for another attempt.
Disabling the internal generator request
An internal generator request is disabled during the shut-off delay time, stop time or in the error
state.
Autostart meter
The recording of autostarts is only reset after the generator has been successfully connected
and the minimum run time has expired or when the locked error state (Fail Lock) is disabled.
Error state
The error state and the locked error state can be ended by confirming the generator fault
(parameter "540.02 GnAck").
Summary of Contents for Sunny Island 4548-US
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