Connecting External Sources
SMA America, LLC
124
SI5048U-TUS121440
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 (”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 shut-off delay 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 shut-off delay 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 changes to 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.
The ”133.03 GnRmgTm” display value 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 shut-off delay time (Cool)
Suppression of the internal generator request
An internal generator request is disabled during the shut-off delay 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 canceled by confirming the generator fault
(”540.02 GnAck” parameter).
