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 <maclew...@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@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@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 >>> >>> >>> >>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> >>> List Address: RE-wrenches@lists.re-wrenches.org >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> There are two list archives for searching. When one doesn't work, try >>> the other: >>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> http://www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> http://www.members.re-wrenches.org >>> >>> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> >> > > -- > > > > Mac Lewis > > *"Yo solo sé que no sé nada." -Sócrates* >
_______________________________________________ List sponsored by Redwood Alliance Pay optional member dues here: http://re-wrenches.org List Address: RE-wrenches@lists.re-wrenches.org Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org There are two list archives for searching. When one doesn't work, try the other: https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: http://www.re-wrenches.org/etiquette.htm Check out or update participant bios: http://www.members.re-wrenches.org