[RE-wrenches] Sunny Island/Fortress E-vault

Tue Sep 19 21:06:51 PDT 2023

We may want to distinguish between 4248 and the 6048, the 4248 has no
capability to connect to fortress and a viable solution is to set the temp
sender to77 degrees to peak charge the fortress evault max.
Fun times

On Tue, Sep 19, 2023, 6:43 PM Glenn Burt via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> In my comversations with SMA, they made it clear they do not support
> closed loop comms with anyone at this time.
> YMMV
>
> -Glenn
> Sent from my 'smart'phone, so please excuse typos and spelling errors.
>
> ------ Original message------
> *From: *Kienan Maxfield via RE-wrenches
> *Date: *Tue, Sep 19, 2023 3:17 PM
> *To: *RE-wrenches;
> *Cc: *Kienan Maxfield;
> *Subject:*Re: [RE-wrenches] Sunny Island/Fortress E-vault
>
> 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. -
> https://learn.fortresspower.com/external/manual/sma/article/introduction-useful-links?p=dc8b9a9c1b3f410556835193e66f2257c662403dfb3da4056e618e954e8381d2
>
> Thanks,
>
> Kienan Maxfield
> Technical sales, Technical Support
>
> *Green-Go Solar Distribution*
> *kienan at dist.solar <kienan at dist.solar>* <https://kienan@dist.solar/>
> *(801) 631-5584 <(801)%20631-5584> (Cell)*
> *www.distribution.solar <https://www.distribution.solar/>*
>
>
>
> ------------------------------
> *From:* RE-wrenches > on behalf of Kirk Herander via RE-wrenches
> <%3Cre-wrenches-bounces at lists.re-wrenches.org>>
> <%3Cre-wrenches at lists.re-wrenches.org>
> *Sent:* Saturday, September 16, 2023 8:33 AM
> *To:* RE-wrenches > <%3Cre-wrenches at lists.re-wrenches.org>
> *Cc:* Kirk Herander > <%3Ckirkh at vermont.solar>
> *Subject:* Re: [RE-wrenches] Sunny Island/Fortress E-vault
>
> Jerry,
>
> Who is the maker of the Blue Planet/Outback SOC box interface you mention?
>
> On Sat, Sep 16, 2023 at 9:30 AM Jerry Shafer via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> Mac, wrenches
> 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.
> Fun times
>
> On Sat, Sep 16, 2023, 6:04 AM Mac Lewis <maclewis1 at gmail.com> wrote:
>
> Hi William,
>
> Are you doing open loop or closed loop communication?  I'm not sure if
> Fortress can do a closed loop with SMA or not.
>
> 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.
>
> 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.
>
> Let us know if there is a Fortress to SMA communication solution.
>
>
>
>
>
> On Fri, Sep 15, 2023 at 11:11 PM Jerry Shafer via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> William, Wrenches
> 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.
> OldSchool fun times
>
>
>
> On Thu, Sep 14, 2023 at 2:12 PM William Miller via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
>
> Friends:
>
>
>
> 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?
>
>
>
> Thanks.
>
>
>
> William
>
>
>
> Miller Solar
>
> 17395 Oak Road, Atascadero, CA 93422
>
> 805-438-5600
>
> www.millersolar.com
>
> CA Lic. 773985
>
>
>
>
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> --
>
>
>
> Mac Lewis
>
> * "Yo solo sé que no sé nada." -Sócrates *
>
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