Correction: 2.2k. Sorry for the confusion, my memory sucks. William Miller Miller Solar.com 805-438-5600 www.millersolar.com
On Sun, Nov 12, 2023 at 6:41 PM William Miller <will...@millersolar.com> wrote: > 2.7 k ohms = about 37 C. Digi key or I can send you a few. > > William Miller > Miller Solar.com > 805-438-5600 > www.millersolar.com > > > On Sun, Nov 12, 2023 at 5:27 PM Roland - RES via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> Jerry, >> >> I have an upcoming project where I will need to add the resister to >> eliminate and batt temp charging corrections. I have not done this before >> can you provide where I could find a twister to achieve this? >> >> Mahalo, >> >> >> Roland Shackelford >> >> President / Owner >> >> NABCEP PVIP #091209-162 >> >> Office 808.775.7410 >> >> Mobile 808.938.9239 >> >> Power Solutions for Generations Renewable Energy Services, Inc. >> <https://www.renewablenergy.com/> >> >> " Where there is integrity, there will be trust. Where there is trust, >> there will be an atmosphere for success." - Sadhguru >> >> On Nov 12, 2023, at 10:51 AM, Jerry Shafer via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >> >> Regarding the SI Inverters,for me it works best to eliminate the bat temp >> sensor and put in a resister set to be 75 degrees, this will prevent the >> charger over under charge issue. >> Fun times >> >> On Sun, Nov 12, 2023, 12:36 PM William Miller via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >>> Friends: >>> >>> >>> >>> I am still working on getting the E-vaults to play nice with the Sunny >>> Islands and Sunny Boys. >>> >>> >>> >>> With Open loop I was getting significant discrepancies in the reporting >>> of SOC in the e-vaults versus that reported by the SI inverters. This >>> discrepancy did not diminish over time. The discrepancy caused >>> unacceptable charging and generator operations. >>> >>> >>> >>> I got Closed loop hooked up, but I found that every few days the SI >>> inverters would shut down due to a battery over-voltage condition. I >>> believe that when the e-vaults are near 100% SOC the BMS units increase the >>> battery impedance which means any charging current applied will cause the >>> voltage spike I have been seeing. I was able to measure these conditions >>> myself on site, although they were very fleeting and required recording >>> with the Fluke87 Min-Max function (love this meter!). >>> >>> >>> >>> I was able to extract log files from the Sunny Island primary inverter >>> and perform some analysis. It appears when I turned on remote BMS on the >>> SI (as part of the Closed loop protocol) it disabled the Frequency-Shift >>> Power Control. This means the SI inverters have gone from having poor >>> control over battery charging to having no control over battery charging. >>> >>> >>> >>> I have documented my research here >>> <https://millersolar.com/MillerSolar/case_studies/36_SIFortress/36_SunnyIslandFortressIntegration.html#Inhibit>. >>> There is a table of contents to take you to the latest information. I >>> appreciate pertinent comments any of you might have. >>> >>> >>> >>> By the way, if anyone has called SMA tech support for help on a Sunny >>> Island system, you have likely been asked to extract log files, zip them up >>> and send them off for review (and waited a long time for a reply). I am >>> the kind of guy who does not like to wait for solutions and who likes to >>> figure out things for himself. I have taught myself how to evaluate those >>> log files. I will be posting a web page on the subject. In the meantime, >>> if you are interested, two of my analysis Excel sheets are linked in the >>> case study. I will be expanding on this and providing resources to any >>> integrator that wants that knowledge. >>> >>> >>> >>> Thanks in advance for any insight. I hope I am wrong about this and I >>> am just missing something. I also hope revealing my headaches will help >>> someone someday… >>> >>> >>> >>> 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 >> >> _______________________________________________ >> 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. 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