SMA SUNNY ISLAND 6.0H - Cluster System FAQs

9 Troubleshooting SMA Solar Technology AG
68 SI60H-80H-BE-en-20 Operating Manual
The set maximum permissible generator voltage might be too low.
•
Select the parameter 234.02 GNVtgMax and set to the maximum generator voltage.
The minimum frequency set for the generator voltage might be too high.
•
Select the parameter 234.05 GnFrqMin and set to the minimum frequency of the generator voltage.
The permitted time 234.14 GnRvTm for reverse power might have been exceeded.
• Check whether warning W401 is registered in the menu 420# Error history. Tip: If a warning was registered,
the warning symbol " " is shown in the standard mode of the Sunny Remote Control.
• Select the 540.02 GnAck parameter and set to Ackn. This acknowledges the generator error.
The Sunny Island does not reconnect to the generator after a disconnection from the generator due
to noncompliance with the limiting values for voltage and frequency?
The Sunny Island is switched with a hysteresis, i.e. the limiting values for connection do not correspond to the limiting
values for disconnection.
• To unload the generator, disconnect unnecessary loads.
• Wait until the voltage and frequency have reached the nominal values.
9.5.5 Questions regarding Cluster Systems and Multicluster Systems
Extension clusters remain in standby mode even though the main cluster is in inverter mode?
The data cable between the masters of the individual clusters might not be connected. The master of the main cluster
cannot forward the "Start" command to the masters of the extension clusters.
The multicluster system is not supplying full power?
An extension cluster or individual Sunny Island inverters of an extension cluster might have failed.
High levels of energy is transferred between the clusters in the multicluster system?
The state of charge of the batteries might differ temporarily. The off-grid system equalizes different states of charge
automatically.
The nominal frequencies and nominal voltages might be defined differently.
• Set the frequencies and voltages in the 210# Inverter Settings menu to the same values for all masters.
The battery capacities might differ significantly.
•
Distribute the battery capacities to the clusters as evenly as possible.
Individual battery cells of a battery might have failed.
•
Disconnect defective battery cells and set the new rated voltage and capacity
(see Section10.8 "Replacing the Battery", page77).