Master Slave Handling; Handling Pending Errors During The Booting Procedure - SMA Sunny Island 5048 Technical Description

SMA Solar Technology AG
20.3 Master Slave Handling
Each device detects the faults separately and saves it. The slaves transfer their errors to the master.
The master collects these error messages and enters the slave errors as warnings into its history.
Example:
Slave 1 has detected overtemperature. It enters this error in its history and reports it to the master,
which also enters it as a warning into its failure history ("Menu" 420# Failure History").
The following message appears in the lower line on the
master.
If warning 138 is still active on slave 1, the ENTER symbol is displayed at the end of the line.
After confirming the fault on the master using ENTER, the fault is forwarded to the corresponding slave.
The master shows the following message after
confirmation.
No comparison between master and slave
The error and event memory are not compared between the master and slaves. When the
Sunny Island system starts anew the errors in the slave devices are confirmed.
20.4 Handling Pending Errors During the Booting Procedure
During the booting procedure, all pending errors are generally confirmed without an entry being
made in the history. This way, after the booting procedure an error that is still pending will be re-
entered, or if the system detects that this error has stopped, it is entered as no longer being present.
Technical Description
Troubleshooting
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