<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Hey Chris and All,<div><br></div><div>So my understanding of open versus closed loop and my experience is that closed loop is ideal and will be increasingly required by UL9540 or utilities that require that. However many inverters don\u2019t use SOC from the BMS to determine charge states anyway and they will be relying on voltage and since it\u2019s easy to regulate LFP\u2019s with voltage, open loop works fine for most inverter- LFP pairs as long as you have your settings correct. We have several systems in the field open loop and I have one in my van- All work just fine. </div><div><br><div dir="ltr">Sent from my iPhone</div><div dir="ltr"><br><blockquote type="cite">On Jan 5, 2022, at 8:52 AM, Chris Schaefer <chris@solarandwindfx.com> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">\ufeff<div dir="ltr">Correct me if I'm wrong but my research seems to lean towards the prefered method to implement Lithium batteries with an inverter system is via closed loop communication, over open loop? Currently looking into installing a BI and Fortress system of similar size side by side here at our Design and Training center to see how they perform with a lot of data collection equipment.<div><br></div><div>Christopher</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jan 5, 2022 at 11:37 AM Mac Lewis <<a href="mailto:maclewis1@gmail.com">maclewis1@gmail.com</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">Hi Kirk,<div><br></div><div>Yes, Sol-Ark and Blue Ion communicate fine through the Namaka Gateway. You do need to make sure that the firmware is up to date on the Sol-Ark because there are older versions out there that don't work. Purchase their auto-updater dongle if you aren't going to have internet on the site and preload the new firmware on the dongle.</div><div><br></div><div>I also have quite a few Radians out there working fine with the Blue Ion just using voltage and programming the Flexnet per Blue Ion. The SOC on the flexnet seems to track really well if the batteries are filling up often. </div><div><br></div><div>My only serious gripe with Sol-Ark is generator interaction. It is very rigid and glitchy compared to Outback and strange to program. This will get better though. I do think its easy to </div><div><br></div><div>Good Luck</div><div> </div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Jan 5, 2022 at 7:45 AM Kirk Herander <kirkh@vermont.solar> 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">Hi All,<div><br></div><div>I am considering changing the inverters on several Blue ion HI LFP storage systems I'm installing this Spring from Outback Radians to Sol-Ark. I have no experience w/ Sol-Ark, but it seems more advanced than the Radian. I'm wondering if Sol-Ark and the BI Namaka gateway/monitor can directly interface as Namaka can with some inverter brands. And I'd be interested in hearing of any experiences you may have as to how nicely these different components play together. Thanks.<br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><a name="m_-7887996535244286208_m_7851119046493549237_m_-5457426493850827296_SignatureSanitizer__MailAutoSig"><b>Kirk Herander / </b></a><b><a href="mailto:kirkh@vermont.solar" title="Send an email to kirkh@vermont.solar; Send an email to kirkh@vermont.solar" style="color:blue" target="_blank">kirkh@vermont.solar</a></b></span></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><b>Owner|Principal, VT Solar, LLC</b></span></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><b><i>Celebrating our 31<sup>st</sup> Anniversary 1991-2022!!</i></b></span></p><p class="MsoNormal" style="color:rgb(0,0,0);font-family:Arial;font-size:16px;margin:0in 0in 0.0001pt"><span style="font-size:10pt"><a href="https://nam02.safelinks.protection.outlook.com/?url=www.vermontsolarnow.com&data=02%7C01%7C%7C9f0330d75a244870112408d685311841%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636842843233477645&sdata=0NjyuKeQbEK6245SNnk8X4XnP9Q%2B%2BqtvcALkdDghvk4%3D&reserved=0" title="Click to open in a new window or tab
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><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>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div dir="ltr"><p style="text-align:center"><span style="font-size:10pt;color:rgb(31,73,125)"><font face="Arial, sans-serif">Chris Schaefer\u2019s<br></font></span><a href="http:www.solarandwindfx.com" style="font-size:12.8px" target="_blank"><img src="http://www.solarandwindfx.com/wp-content/uploads/2015/01/Solar-Wind-FX-Logo.png" width="200" height="40" style="color: rgb(31, 73, 125); font-family: Arial, sans-serif; font-size: 10pt;" data-unique-identifier=""></a><br><i><span style="font-family:Arial,sans-serif;color:rgb(31,73,125)"><span style="font-size:9pt">Tel/Fax
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