<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 class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Sep 16, 2023, 6:04 AM Mac Lewis <<a href="mailto:maclewis1@gmail.com">maclewis1@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><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></div><div><br></div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Sep 15, 2023 at 11:11 PM Jerry Shafer via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><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><div><br></div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Sep 14, 2023 at 2:12 PM William Miller via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div><div lang="EN-US"><div><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif"">Friends:</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><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 class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif"">Thanks.</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif"">William</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Verdana,"sans-serif""> </span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif"">Miller Solar</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif"">17395 Oak Road, Atascadero, CA 93422</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif"">805-438-5600</span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif""><a href="http://www.millersolar.com/" target="_blank" rel="noreferrer">www.millersolar.com</a></span></p><p class="MsoNormal"><span style="font-size:12pt;font-family:Arial,"sans-serif"">CA Lic. 773985</span></p><p class="MsoNormal"> </p><p class="MsoNormal"> </p></div></div>
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</blockquote></div><br clear="all"><div><br></div><span class="gmail_signature_prefix">-- </span><br><div dir="ltr" class="gmail_signature"><div><br></div><div><font color="#305A78" face="'times new roman', serif"><br></font></div><div><br></div>Mac Lewis<br><br><span style="font-family:"Times New Roman";font-size:medium;color:rgb(255,153,0)"><b><font face="Arial, Helvetica, sans-serif" size="3"><p align="left"><font color="#000000" face="Verdana, Arial, Helvetica, sans-serif"><span style="font-size:small"><span style="font-family:arial;font-weight:normal;color:rgb(48,90,120)"><font face="'times new roman', serif">"Yo solo sé que no sé nada." </font><span style="font-weight:700;color:rgb(104,104,104)"><font face="'times new roman', serif">-Sócrates</font></span></span></span></font></p></font></b></span></div>
</blockquote></div>