SMA SI 4548-US - Manual (Page 127)

SMA America, LLC 14 Connecting External Sources
Operating Manual SI4548-6048-US-BE-en-20 127
This state lasts for the time period set at "234.11 GnErrStpTm". Once this time has expired, the
generator is ready for another attempt.
The display value "133.03 GnRmgTm" is used to display the remaining time of the generator meter.
Depending on the current request or the phase in which the generator state machine is, the following
times are displayed:
• Remaining time of Run1h
• Remaining run time during the warm-up phase (Warm)
• Remaining minimum run time in operation (Run)
• Remaining run time during the follow-up time (Cool)
• Remaining stop time after the follow-up time has expired (Lock)
• Remaining time in the error state (Fail)
• Remaining time in the locked error state (FailLock)
14.1.8 Operation Together with PV Inverters and Wind Power
Inverters
If the battery is fully charged, the frequency limits the power output of the AC feed-in generators
(Sunny Boy). If the generator is now manually started, for example, the frequency would be lowered,
if required, as the Sunny Island synchronizes with the generator. The AC feeding-in generators
(Sunny Boys) would then feed additional energy into the system and possibly overload the batteries.
In order to prevent this, in this case the stand-alone grid frequency is temporarily increased, in line with
the synchronization, until the AC feed-in generators (Sunny Boy) are disconnected from the
stand-alone grid as a result of the grid limits being exceeded.
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 status
The error state and also the blocked error state can be quit by acknowledging the generator
error (parameter "540.02 GnAck").
Incorrect plant designs will result in excessive AC power of the PV inverters or wind
power inverters
Damage to the Sunny Island.
• The maximum AC power of the connected PV inverters and the connected wind power
inverters must not exceed 9 kW per SI 4548-US-10 or 12 kW per SI 6048-US-10.
• Observe the following:
P
AC max
of the PV inverter = 2 x P
AC nom
of the Sunny Island
P
AC max
of the wind power inverter = P
AC nom
of the Sunny Island