Hi,

 

Has anyone used longer communication cables between 3 or 4 Infinisolar 4Kw inverters?

Due to existing wiring and equipment on the wall, I had to space the 3 inverters a bit more than the minimum recommended distance. But now the comms cable and current sharing cable is too short between the first and last inverter, by about 30cm.

 

I can make  all 3 current sharing cables longer, but the 15pin D sub comms cable is factory made.

Has anyone joined two of these D-sub cables, and it worked fine?  Or gotmlonger cables somewhere?

 

I haven't  tested the pin layout yet to see if  it will stay the same when two are connected.

@SilverNodashi,

I think you can make up your own cable, using standard VGA connectors, as they have the same 5 x 3 rows setup. Just check the back of your (older)PC/Laptop.

Just trace the pin-outs with a multi meter, and hopefully the extra distance in cabling won't "loose" anything.

Let us know if this works.

12 hours ago, Sidewinder said:

@SilverNodashi,

I think you can make up your own cable, using standard VGA connectors, as they have the same 5 x 3 rows setup. Just check the back of your (older)PC/Laptop.

Just trace the pin-outs with a multi meter, and hopefully the extra distance in cabling won't "loose" anything.

Let us know if this works.

yes, I could probably go that route - but hoping to find a ready made-up cable instead. OR, want to know if anyone has done this and ran into problems?

Why not cut the cable in the middle and just insert extension required. It may be non-standard, so inserting a piece of cable and going color-to-color is foolproof.

42 minutes ago, pilotfish said:

Why not cut the cable in the middle and just insert extension required. It may be non-standard, so inserting a piece of cable and going color-to-color is foolproof.

I don't favor cutting and joining cables like this, especially with something as sensitive as this. Generally, problems later arise from the joints. But I found someone in Benoni who's going to make me some longer cables, and will test them next week and report back. 

Just some feedback on this quickly. I had some 2.5m cables madeup and they work very well.