11 Operating Data and Parameters
SMA Solar Technology AG
User ManualSCCPXT-E7-BA-en-58136
Name Description Value/range Explanation Default
value
FRTDbVolNom-
Max*
Upper limit of the voltage
deadband
0 % … 100 % ‒ Country-
specific
FRTDbVolNom-
Min*
Lower limit of the voltage
deadband
−100 % … 0 % ‒ Country-
specific
FRT2ArGra-
NomHi**
Gradient of the FRT char-
acteristic curve in the
event of overvoltage in
the operating mode
FRT_SDLWindV
0 … 10 Values up to max. 2 are recom-
mended. Values larger than 2
can lead to unstable plant behav-
ior.
Country-
specific
FRT2ArGra-
NomLo**
Gradient of the FRT char-
acteristic curve in the
event of undervoltage in
the operating mode
FRT_SDLWindV
0 … 10 Values up to max. 2 are recom-
mended. Values larger than 2
can lead to unstable plant behav-
ior.
Country-
specific
EnaAid Activation of islanding
detection
Off Deactivated Off
On Activated
TrfVolExlHi* Line-to-line voltage on
overvoltage side of exter-
nal transformer
1 V to 70,000V ‒ 20,000V
TrfVolExlLo* Line-to-line voltage on un-
dervoltage side of exter-
nal transformer
1V to 500V SunnyCentral500CPXT 270V
SunnyCentral630CPXT 315V
SunnyCentral720CPXT 324V
SunnyCentral760CPXT 342V
SunnyCentral800CPXT 360V
SunnyCentral850CPXT 386V
SunnyCentral900CPXT 405V
SunnyCentral1000CPXT 405V
* To change this parameter, you must enter the installer password.
** To view or change this parameter, you must enter the installer password.