klerindias Posted November 23, 2012 Share Posted November 23, 2012 Hello,I read about making subfield, but it not workng for me.I got 1 inverter sma stp 17000, and 90 modules.sma design gave me proposition to put modules in 5 strings:4 string x 20 modules1 string x 10 modulesSo when i doing subfield with 4x20 and 1x10 i got 2 inverters not 1, how to make it with 1 inverter?Regards Link to comment Share on other sites More sharing options...
André Mermoud Posted November 27, 2012 Share Posted November 27, 2012 You have to redefine your inverter as a device with 5 inputs, one for each string. After that you can define a system with 2 subfields: one with 4 strings (MPPT inputs) and one with 1 string. Please see "How to use inverters with very different MPPT input like SMA tripower ?" Link to comment Share on other sites More sharing options...
klerindias Posted November 27, 2012 Author Share Posted November 27, 2012 Hello,i tried and error.When i change Number of MPPT inputs to 1 with 4 DC inputs (DC specification) PVSys window crashing need push X button.But i noticed when i choose "String inverter" and then want to choose Multi-MPPT, and there is number 2,when i change to 1, i cant do anything, but at least can change back to number 2 and it works, but impossible change to 1 MPPT.Minimum MPPT inputs is 2, cant be 1 other way program not responding.Please explain with screenshot how to do it.But still my question when i do this with 2 subfields i will have 2 or 1 inverter?? and how to use multi-MPPT features?http://img811.imageshack.us/img811/9594/pvsysterrorinverter.jpghttp://img4.imageshack.us/img4/83/pvsysterrorinverter1.jpg Link to comment Share on other sites More sharing options...
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