Hi All, I have noted that the phantom arc faults occur with high power modules such as Sunpower. I have also heard of many issues with Tigo optimizers. One potential easy fix is to disable the Optitrac Global Peak. This seems to work to get rid of the arc faults in both the -22 and the -40 inverters. The only downside to that will be reduced power output in partial shading conditions.
I wouldn't hold my breath for SMA's firmware fix. I was told last year it would be out by this February (7 months ago) and that they would automatically push the firmware fix to all their inverters... Cheers, Dave *Dave Tedeyan, PE* Senior Engineer | Taitem Engineering, PC 110 South Albany Street | Ithaca, NY 14850 o. *607.277.1118 x121* f. 607.277.2119 www.taitem.com Solar • Sustainability • Energy • Design B-Corporation Best for the World 2018 Honoree On Mon, Sep 2, 2019 at 12:03 PM Jerry Shafer <jerrysgarag...@gmail.com> wrote: > Wrenches > I have had chiller pump contactor along with wells, shop air compressors > all create enough of an arc to trigger the inverters. ABB inverters only > pick up off the DC but even there l had arc welders trip the inverters. > Jerry > > On Mon, Sep 2, 2019, 8:14 AM frenergy <frene...@psln.com> wrote: > >> Interestingly, the problems I've had with the SMA -40 AFCI faults have >> been on Comp roofs. When I've gone "inside" a -40 with my laptop, I'm >> pretty sure I've seen where you can disable it? >> >> Bill >> On 9/2/2019 7:12 AM, drake.chamber...@redwoodalliance.org wrote: >> >> At least with the TL-22s, the AFCI function can be turned off. You need a* >> Web connect speed wire module*. .I don't know if this same protocol will >> work for the TL 40s or not. >> >> Metal roofing can apparently be affected by radio waves and by other >> factors that create a disturbance that can trigger the AFCI.The TL 40 was >> supposed to overcome this problem. >> >> >> >> ----- Original Message ----- >> From: >> "RE-wrenches" <re-wrenches@lists.re-wrenches.org> >> <re-wrenches@lists.re-wrenches.org> >> >> To: >> "RE-wrenches" <re-wrenches@lists.re-wrenches.org> >> <re-wrenches@lists.re-wrenches.org> >> Cc: >> >> Sent: >> Sun, 1 Sep 2019 07:42:14 -1000 >> Subject: >> [RE-wrenches] SMA phantom arc faults >> >> >> Aloha all, >> >> My company has really been struggling with the SMA US-40 line of >> inverters and incredibly disruptive to positive customer experiences bogus >> arc faults. >> >> We were told by our SMA friends that a firmware update/fix was >> forthcoming in mid-August and we’ve heard nor received nothing last month. >> >> Does anyone know anything as to where they’re at on this? >> >> Really frustrated.... >> >> marco >> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> 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 >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette:www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios:www.members.re-wrenches.org >> >> -- >> Feather River Solar Electric >> Bill Battagin, Owner >> 4291 Nelson St. >> Taylorsville, CA 95983 >> 530.284.7849 >> CA Lic 874049www.frenergy.net >> >> >> >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon> >> Virus-free. >> www.avast.com >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link> >> <#m_5811634611145324122_m_-8586691768230059784_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> 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 >> >> List-Archive: >> http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> >> _______________________________________________ > List sponsored by Redwood Alliance > > 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 > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > >
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