User Manual

2
Criteria for the Proper Selection of String Fuses .............................................................. 22
General ........................................................................................................................ 22
Criteria for the Proper Selection of String Fuses ......................................................... 22
Effects of Using Underrated Fuses .............................................................................. 22
Fuse Recommendations - Application Example .......................................................... 22
Fuses ...........................................................................................................................23
Inserting String Fuses ...................................................................................................... 24
Selecting String Fuses ................................................................................................. 24
Inserting String Fuses .................................................................................................. 24
Safety........................................................................................................................... 24
Connecting Data Communication Cables to the Fronius String Control 250/25 .............. 25
Connection Options ..................................................................................................... 25
Additional Insulation for Data Communication Cables................................................. 25
Safety........................................................................................................................... 25
Connecting RJ 45 Data Communication Cables to the
Fronius String Control 250/25 ...................................................................................... 26
Connecting Unterminated Multi-core Data Communication Cables to the
Fronius String Control 250/25 ...................................................................................... 26
Terminal assignments .................................................................................................. 27
Connecting an External Power Supply ............................................................................. 28
General ........................................................................................................................ 28
Safety........................................................................................................................... 28
Connecting an External Power Supply ........................................................................ 28
Setting the Address .......................................................................................................... 29
Safety........................................................................................................................... 29
General ........................................................................................................................ 29
Setting the Address - Examples ................................................................................... 29
Installing the Protection Against Contact and Closing the
Fronius String Control 250/25 .......................................................................................... 30
Safety........................................................................................................................... 30
Installing Protection Against Contact ........................................................................... 30
Closing the Fronius String Control 250/25 ................................................................... 30
Settings ............................................................................................................................ 31
General ........................................................................................................................ 31
Initial Steps .................................................................................................................. 31
Possible Settings for the Fronius String Control 250/25 .............................................. 31
Strings per Measuring Channel.................................................................................... 32
Max. Energy Deviation ................................................................................................. 32
Threshold ..................................................................................................................... 32
Display of Data and Status Messages ............................................................................. 33
Data Display ................................................................................................................ 33
Status Messages ......................................................................................................... 33
Replacing String Fuses .................................................................................................... 34
Safety........................................................................................................................... 34
Preparation .................................................................................................................. 34
Replacing String Fuses ................................................................................................ 34
Finally... ........................................................................................................................ 35
Technical Data ................................................................................................................. 36
Input data ..................................................................................................................... 36
Output data (to the inverter) ......................................................................................... 36
General Data ............................................................................................................... 37