SMA Solar Technology AG
10 Troubleshooting
Operating Manual
SI80H-BE-BEN120810
55
Treatment of Pending Errors upon Activation
During the activation procedure, all pending errors are generally acknowledged without an entry
being made in the history. Errors which are still pending are entered again after activation. Errors
which are detected by the off-grid inverter before activation, and are no longer detected after
activation, are shown in list
420# Error history
.
Autostart
The autostart function allows automatic restarts in the event of disturbances. If the autostart function
fails in the event of a disturbance, the off-grid inverter attempts to carry out the next autostart
immediately. The number of autostarts is restricted. If the off-grid inverter runs in inverter operation
without disturbances for ten minutes, it resets the autostart counter.
When the maximum number of autostarts has been reached, the off-grid inverter reacts as follows:
• The off-grid inverter waits ten minutes.
• The autostart counter is reset.
• The off-grid inverter attempts to perform an autostart.
• When the maximum number of autostarts is reached, the off-grid inverter waits ten minutes.
Master-Slave Treatment
The
250.30 RnMod
parameter influences the reactions of a three-phase off-grid system in the event
of a disturbance. Depending on the setting, the entire cluster may either stop or remain in if an error
in a slave cannot be rectified via the autostart function, the entire cluster may either stop or remain in
in operation without the affected slave. In the default setting, the cluster remains in operation.
Each off-grid inverter records and saves its own errors. The slaves report their errors to the master. The
master collects these error messages and records the errors of the slaves as warnings in its menu
410# Error active
. If you acknowledge the error of the slave on the master, the master sends the
acknowledgement to the slave.
The error and event memories of the master and the slaves are not synchronised. If the off-grid system
is restarted, the errors of the slaves are acknowledged.
Example: Handling errors in a cluster
Slave 1 reduces its power due to excessive temperature and records warning
W138
in its menu
410# Error active
. Slave 1 reports the warning to the master. The master records the warning in
its menu
410# Error active
.
