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<font size=3>Carl:<br><br>
I have checked with Xantrex. I would not make a declaration on the
Wrenches forum to my esteemed colleagues unless I was quite
certain. Find the "SWI Stacking Cable wiring diagram" on
our web site at:
<a href="http://millersolar.com/resources/resources.html" eudora="autourl">http://millersolar.com/resources/resources.html</a>
under "Manufacturer's data". This diagram came directly from a Xantrex engineer. I have no reason to doubt it's authenticity. This is not the pin out for a "standard" DB25 cable. Not also the link just below it for "Not an SWI cable" This is your "standard" cable. I fished this out of my attic this evening and scanned it still in the package. Note it is listed as a "straight through" cable. This means pin 1 connects to pin 1, pin 2 to pin 2, etc. This is not the same wiring as depicted in the SWI stacking cable diagram.<br><br>
I believe you have suggested twice that solar installers grab the nearest "standard" DB25 cable and give it a try. I feel compelled to correct the record publicly. These are not the same cables and unspecified damage could occur. I know I once shorted out a sync cable for Heart Interface inverters and blew two of them up catastrophically two days before Christmas. It was a very unpleasant surprise for the client (who had guests coming) and for my self. These cables are a direct link to the FET control circuits and need to be treated with the utmost caution.<br><br>
I don't know what would happen to two SW inverters if connected with your straight through cable, but I recommend strongly against trying it. Please do not recommend practices unless you are quite certain they will cause no harm.<br><br>
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Respectfully,<br><br>
William Miller<br><br>
PS: Printer cables were never DB25-DB25. They were DB25 to Centronics.<br><br>
Wm<br><br>
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<br><br>
At 10:01 AM 3/31/2009, you wrote:<br>
</font><blockquote type=cite class=cite cite><font face="arial" size=2>William,<br>
</font><font size=3> <br>
</font><font face="arial" size=2> I used an off the shelf cable to use with the SW and PS remote, it was a double male ended 25 pin cable. They were formally used as printer/computer cables. I believe the stacking cable is the same style. You could check with Xantrex.<br>
</font><font size=3> <br>
</font><font face="arial" size=2> Carl Hansen</font></blockquote></body>
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