SI4548-US-10 Manual

SMA America, LLC 20 Troubleshooting
Technical description SI4548_6048-US-TB_en-13 221
What happens if the card inserted is not FAT16 formatted?
• The Sunny Island displays the message "Incomp".
Why does the generator and/or the grid not reconnect although the
(voltage or frequency) limit for disconnection has not been exceeded?
• The Sunny Island connects with a so-called hysteresis, i.e., the connection value is slightly below
or above the disconnection value. These limiting values are preset ex-works.
Why is it not possible to set any combinations of voltage and frequency limits?
• The possible ranges for voltage and frequency of the Sunny Island allow the combination of
special frequencies and voltages that result in transformer saturation and are therefore not
permitted.
Why is it that one (or more) extension clusters remain in standby, although the
main cluster is operating properly?
• Is the data cable between the master devices connected? The main master cannot forward the
"Start" command to the extension master. The devices remain in standby.
Why is the Multicluster system not supplying full power?
• Has an extension cluster's slave failed? The system continues to operate, but with
correspondingly lower output on the line conductor of the failed device.
Why is it that shortly after startup, the slave switches to standby with the error
message F117, but the master continues to operate?
• Are the line conductors within the cluster, or from the cluster to the Multicluster Box connected
the wrong way around? This causes a permanent short-circuit in the cluster, and the slave reports
this to the master.
What is the meaning of the F605 error message?
• The F605 error message might occur, among other things, if you have installed a direct
connection with switch between the AC input (AC2) and the AC output (AC1) of the
Sunny Island. If such a connection is not installed on the Sunny Island and if the switch is closed,
the Sunny Island is surpassed. If the Sunny Island did not give the order for closing its internal
transfer relay itself, it displays the F605 error message and does not start operation.
Open the bypass switch and restart the Sunny Island afterwards to fix this error.
Why is it that high outputs are being transferred back and forth between the
clusters in the cluster network?
• The nominal frequencies and voltages are defined differently. Correct this by means of the
appropriate parameters.