Connecting External Sources
SMA Solar Technology AG
114
SI5048-TEN093630
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 or 10 minutes, the connection process is cancelled 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 ("234.08 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 a generator request is no longer present, the generator
disconnects and enters the power down phase (Cool). 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.
Power down time
The power down time ("234.10 GnCoolTm" parameter) defined on the Sunny Island
should be set equal to or preferably greater than the power-down time of the GenMan.
Suppression of the internal generator request
An internal generator request is disabled during the power down time and stop time or in
error state.
Autostart Counter
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 (FailLock)
is disabled.
Error state
The error state and the locked error state can be cancelled by confirming the generator
fault ("540.02 GnAck" parameter).
Summary of Contents for SI 5048
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