SMA STP 50-40 - Page 86

8 Operation
SMA Solar Technology AG
Operating manualSTP50-4x-BE-en-2386
Settings via device parameters
In the following table, you will find all parameters that are needed to activate and set the string-
failure detection.
Object name Parameter Display group Settings
Operation.StrFlt-
Det.OpMod
Operating mode of
the string-failure de-
tection
DC side > Operation >
String-failure detection >
General operating mode
• Off
• On
Operation.StrFlt-
Det.ChGrp
String comparison
group for string-fail-
ure detection
DC side > Operation >
String-failure detection >
Comparison group
• No Group (NoGrp)
• Group 1 (Grp1)
• Group 2 (Grp2)
• Group 3 (Grp3)
Operation.StrFlt-
Det.SnsLvl
Sensitivity of string-
failure detection
DC side > Operation >
String-failure detection >
Sensitivity of the sensors
• Special setting (Adj)
• Low (LowMod)
• Normal (NrmMod)
• High (HiMod)
Operation.StrFlt-
Det.Tol
Tolerance of string-
failure detection
DC side > Operation >
String-failure detection > Tol-
erance
• 0% to 100%
Operation.StrFlt-
Det.WrnTm
Time until string-fail-
ure detection warn-
ing
DC side > Operation >
String-failure detection >
Time until warning
• 5minto360min
Operation.StrFlt-
Det.WMinNom
Activation threshold
for string-failure
detection
1)
DC side > Operation >
String-failure detection >
Nominal AC power
• 5% to 100%
Procedure:
1. Activate the user interface of the inverter.
2. Log into the user interface as an Installer.
3. Call up the menu Device parameters.
4. Click on [Edit parameters].
5. Expand the display group that contains the parameter.
6. Set the parameter.
7. Select [Save all] to save the settings.
Configuration with the help of the installation assistant
Procedure:
1. Open the user interface (see Section8.2, page61).
2. Log into the user interface as an Installer.
1)
Parameter can exclusively be set via the device parameters.