5 Troubleshooting SMA America, LLC
26 SB6-11TLUS-BA-eng-BUS121211 User Manual
5.3 Display Messages
5.3.1 Status Messages
Message Explanation
Balanced The inverter has disconnected from the power distribution grid or is
limiting its power to a defined value over a 10-minute average. The
inverter is part of a three-phase system with two further inverters and
is equipped with the SMA Power Balancer to prevent the formation of
unbalanced loads.
Derating Reduction of the power due to abnormal heat sink temperatures
Disturbance The inverter has detected a disturbance. The inverter is no longer
feeding into the power distribution grid.
Error The inverter has detected a fault. The error has to be remedied before
the inverter can continue feeding into the power distribution grid.
Grid monitoring When the system starts, the inverter synchronizes with the power
distribution grid.
MPP The inverter is in MPP mode.
The inverter adjusts the DC input voltage and the DC input current of
the PV array to achieve the highest possible AC output power.
MPP-Search When the system starts, the inverter checks the MPP tracking range.
Offset When the system starts, the inverter calibrates the electronics.
Riso The inverter measures the PV plant insulation resistance.
Stop The inverter has been manually set to system stop.
Turbine The inverter is in turbine mode.
This operating mode was specifically designed for use with wind
turbine systems.
V-Const The input voltage of the PV array is set at a given target value and the
inverter is not operating in MPP mode. This operating mode is suitable
for using the inverter with fuel cells or small hydroelectric power plants.
Wait The DC input voltage is not high enough for the start.
Warning System warning requires further investigation.
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