<div dir="auto">Kieran:</div><div dir="auto"><br></div><div dir="auto">I have read the documentation. Fortress tech support said there have been problems and recommended open loop. </div><div dir="auto"><br></div><div dir="auto">Do you know what parameters are passed with closed loop?<br clear="all"><div dir="auto"><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><br>William Miller<br>Miller Solar.com<br>805-438-5600<br><a href="http://www.millersolar.com">www.millersolar.com</a><br></div></div></div><div><br></div><div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Sep 19, 2023 at 12:18 PM Kienan Maxfield via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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That's actually incorrect, Fortress totally does support closed-loop with the SMA Sunny Island inverters. Here is their integration guide. This has all of the instructions and coms wiring, etc. - <a href="https://learn.fortresspower.com/external/manual/sma/article/introduction-useful-links?p=dc8b9a9c1b3f410556835193e66f2257c662403dfb3da4056e618e954e8381d2" id="m_-2265844953036468018LPlnk209221" target="_blank">https://learn.fortresspower.com/external/manual/sma/article/introduction-useful-links?p=dc8b9a9c1b3f410556835193e66f2257c662403dfb3da4056e618e954e8381d2</a></div>
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Thanks,</div>
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<div dir="auto" style="font-weight:400;text-decoration:none"><span style="font-size:large">Kienan Maxfield</span><span style="font-size:large"><br>
</span><span style="font-size:large">Technical sales, Technical Support</span><span style="font-size:large"><br>
</span><span style="font-size:large"><br>
</span></div>
<div dir="auto" style="font-weight:400;text-decoration:none"><strong style="font-size:large">Green-Go Solar Distribution</strong><span style="font-size:large"><br>
</span></div>
<div dir="auto" style="font-weight:400;text-decoration:none"><a href="https://kienan@dist.solar/" style="font-family:"Comic Sans MS";font-size:large" id="m_-2265844953036468018OWA1b215a34-1d85-5032-22ce-97dac168f12d" target="_blank"><strong>kienan@dist.solar</strong></a><span style="font-size:large"><br>
</span></div>
<div dir="auto" style="font-weight:400;text-decoration:none"><strong style="font-family:"Comic Sans MS";font-size:large">(801) 631-5584 (Cell)</strong><span style="font-size:large"><br>
</span></div>
<div dir="auto" style="font-weight:400;text-decoration:none"><strong style="font-family:"Comic Sans MS";font-size:large"><a href="https://www.distribution.solar/" style="font-family:"Comic Sans MS";font-size:large" id="m_-2265844953036468018OWA931e73fc-a7f3-5c4a-44a3-47c4a38a664a" target="_blank">www.distribution.solar</a></strong></div>
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<div id="m_-2265844953036468018divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> RE-wrenches <<a href="mailto:re-wrenches-bounces@lists.re-wrenches.org" target="_blank">re-wrenches-bounces@lists.re-wrenches.org</a>> on behalf of Kirk Herander via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>><br>
<b>Sent:</b> Saturday, September 16, 2023 8:33 AM<br>
<b>To:</b> RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>><br>
<b>Cc:</b> Kirk Herander <kirkh@vermont.solar><br>
<b>Subject:</b> Re: [RE-wrenches] Sunny Island/Fortress E-vault</font>
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<div dir="auto">Jerry, </div>
<div dir="auto"><br>
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<div dir="auto">Who is the maker of the Blue Planet/Outback SOC box interface you mention?</div>
<div><br>
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<div dir="ltr">On Sat, Sep 16, 2023 at 9:30 AM Jerry Shafer via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br>
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<div dir="auto">Mac, wrenches
<div dir="auto">SMA and fortress can only open loop and with a fixed temp sender its fine. Now on the blue planet and open loop with outback, you need a SOC box that they can make for you, it will interface with the blue planet and command the genny.</div>
<div dir="auto">Fun times</div>
</div>
<br>
<div>
<div dir="ltr">On Sat, Sep 16, 2023, 6:04 AM Mac Lewis <<a href="mailto:maclewis1@gmail.com" target="_blank">maclewis1@gmail.com</a>> wrote:<br>
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<div dir="ltr">Hi William,
<div><br>
</div>
<div>Are you doing open loop or closed loop communication? I'm not sure if Fortress can do a closed loop with SMA or not.</div>
<div><br>
</div>
<div>We struggled to get the open loop to work well with some Blue Ion batteries, not from a charging sense but from a sense of getting the auto gen start to trigger correctly. Basically, the SOC algorithm was always way off. For a while we were using an
external voltage trigger and we could get the generator to start OK before BMS shutdown. We have since added a Namaka box and are using the "Ext BMS" setting for battery type in the Sunny Island and it has been working very well.</div>
<div><br>
</div>
<div>I think the difficulty arises because the Sunny Island is so State-of-Charge centric and you can't manipulate the SOC algorithm without that Ext-BMS setting (and solid communication). One weakness of the ext BMS setting is that it won't fall back on Voltage
settings if battery communication goes down, but this is a weakness throughout closed loop communication for many manufacturers.</div>
<div><br>
</div>
<div>Let us know if there is a Fortress to SMA communication solution.</div>
<div><br>
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<div dir="ltr">On Fri, Sep 15, 2023 at 11:11 PM Jerry Shafer via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br>
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<div dir="ltr">William, Wrenches
<div>Yes I do and it does require some basic electronics to make it work correctly, you will need to remove the ttemp sender and make a resistor pack to simulate the 77 degree reading otherwise it will not charge properly, for the first one I used a breadboard
to set the temp for what I wanted to see then build a more solid state shrink wrap resistor. Doing this will prevent undercharge by the SMA and your customer will be happy to see the full state of charge at the batteries.</div>
<div>OldSchool fun times</div>
<div><br>
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<div dir="ltr">On Thu, Sep 14, 2023 at 2:12 PM William Miller via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer" target="_blank">re-wrenches@lists.re-wrenches.org</a>> wrote:<br>
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<p><span style="font-size:12pt;font-family:Verdana,sans-serif">Friends:</span></p>
<p><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p>
<p><span style="font-size:12pt;font-family:Verdana,sans-serif">I am commissioning an E-vault battery array to an existing SMA Sunny Island System. Does anyone have any experience with this they could share?</span></p>
<p><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p>
<p><span style="font-size:12pt;font-family:Verdana,sans-serif">Thanks.</span></p>
<p><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p>
<p><span style="font-size:12pt;font-family:Verdana,sans-serif">William</span></p>
<p><span style="font-size:12pt;font-family:Verdana,sans-serif"> </span></p>
<p><span style="font-size:12pt;font-family:Arial,sans-serif">Miller Solar</span></p>
<p><span style="font-size:12pt;font-family:Arial,sans-serif">17395 Oak Road, Atascadero, CA 93422</span></p>
<p><span style="font-size:12pt;font-family:Arial,sans-serif">805-438-5600</span></p>
<p><span style="font-size:12pt;font-family:Arial,sans-serif"><a href="http://www.millersolar.com/" rel="noreferrer" style="font-family:Arial,sans-serif" target="_blank">www.millersolar.com</a></span></p>
<p><span style="font-size:12pt;font-family:Arial,sans-serif">CA Lic. 773985</span></p>
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