SMA SB 3300TL - Manual (Page 50)

Technical Documentation SMA Technologie AG
Page 46 SB3300TL-11:FE1905 Operating Instructions
dI-Test Failure of differential current converter
dZac-Bfr
dZac-Srr The rate of change of the AC grid impedance is exceeding the per-
missible range („Bfr“ or „Srr“ is an internal message and is not im-
portant for the user). The Sunny Boy assumes that the public grid is
down and disconnects from the grid in order to avoid islanding.
Check the grid impedance and the rate of fluctuation. If the grid fre-
quency fluctuates often and thus „dZac-Bfr“ or „dZac-Srr“ failures
often occur consult the utility company if it is permissible to change
the grid monitoring parameters of the Sunny Boy. Contact SMA
about how to change the grid monitoring parameters of your Sunny
Boy.
EEPROM Transition failure during reading or writing of data EEPROM, the
data is not essential for safe operation - this failure does not effect
performance.
EEPROM dBh Data EEPROM defective, device is set to permanent disable due to
the fact that the data loss affects important functions of the Sunny
Boy. Contact SMA.
EeRestore A data record was defective and was reconstructed.
Fac-Bfr
Fac-Srr The AC grid frequency is exceeding the permissible range („Bfr“ or
„Srr“ is an internal message and is not important for the user). The
Sunny Boy 3300TL assumes that the public grid is down and discon-
nects from the grid in order to avoid islanding.
Check the grid frequency and the grid cable connection in the Sun-
ny Boy enclosure. If the grid frequency is out of range due to your
local grid conditions consult the utility company if it is permissible to
change the grid monitoring parameters of the Sunny Boy. Contact
SMA about how to change the grid monitoring parameters of your
Sunny Boy.
If the grid frequency is within the tolerable range and the failure
message „Fac-Bfr“ or „Fac-Srr“ is still displayed, contact SMA.
IGBTs The internal hardware monitoring has detected a defect of an in-
verter part. Contact SMA in case this failure often occurs.
Imax Overcurrent on the AC side. This failure code is indicated in case
the current to the AC grid exceeds the specification. Have your
plant configuration checked.
Imax DC Overcurrent in the intermediate DC circuit of the Sunny Boy
3300TL. The Sunny Boy is detecting a current exceeding the speci-
fications within its intermediate circuit. This is the result of a too high
current on the DC input. Have your plant configuration checked.
Failure Code Descripition