SMA SMC 6000TL Installation User Manual
Page 63
SMA Solar Technology AG
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Installation Guide
SMC6-8TL-IEN101040
63
Derating
The "Derating" operating mode is a normal operating mode which may
occur occasionally and can have several causes.
If the inverter was in the "Derating" mode for at least 10 minutes, it will
display the "Derating" warning until the next total shutdown of the device
(at the end of the day).
Corrective measures
• Check heat dissipation, as described in section 8.1 ”Checking
dI-Bfr
dI-Srr
The inverter has detected a drastic change in the differential current. The
integrated differential current monitoring system plays an important part
in ensuring personal safety.
A drastic change in the differential current can be caused by a sudden
grounding fault, failure current or an actual fault in the device. The
inverter disconnects from the grid.
Corrective measures
• If the message "dI-Bfr" or "dI-Srr" appears for no obvious reason,
verify whether the plant insulation might have a ground fault, as
described in section 9.3.1 ”Checking the PV Generator for a
Ground Fault” (page 68).
EEPROM
Transition disturbance while data is being written or read from EEPROM.
The data is not relevant for safe operation
The disturbance has no effect on the performance of the inverter.
EEPROM dBh
EEPROM data is defective, the device has switched off because the loss
of data has disabled important functions of the inverter.
Corrective measures
• Contact the SMA Serviceline
EeRestore
One of the duplicate data sets in the EEPROM is defective and has been
reconstructed without loss of data.
• The error message only serves to inform you and has no effect on
the performance of the inverter.
Fac-Bfr
Fac-Srr
FacFast
The grid frequency is no longer within the permissible range ("Bfr" / "Srr"
/ "Fast" is an internal message of no relevance for the user). For safety
reasons, the inverter disconnects itself from the grid.
Corrective measures
• Check the grid connection and if necessary measure the grid
frequency.
• If the grid frequency is within the tolerance range, yet "Fac-Bfr",
"Fac-Srr" or "FacFast" faults are still being displayed, contact the
SMA Serviceline
Message
Description and corrective measure