Lou: I have worked hard to understand the Sunny Island. To me it is not that intuitive.
As far as I know 231.05 tells the system simply if you have a generator or if you do not have a generator. One needs to consider the Backup mode setting on the Sunny Boy(s). Options are On All or Off. I have tried both and I can’t quantify any difference. If anyone knows please let me know. William Miller Miller Solar.com 805-438-5600 www.millersolar.com On Mon, May 26, 2025 at 9:33 PM Lou Russo via RE-wrenches < [email protected]> wrote: > Aloha All, > > I am messing around with a system in our shop just 'cause I wanted to mess > around with AC coupled systems at my leisure. This setup is completely > off-grid. I have an autoformer between the SB and the SI. > > I am able to make changes to the parameters on the SB with an old Webbox > and a RS485 Piggyback card. > > The manuals I found online are showing a slightly different set of > parameters than what I am seeing in real life. For instance, there is no > "country standard" parameter on the SB. And when I make the recommended > changes to the parameters that do match up with the manuals, the value > ranges on the SB are much tighter so it does not let me enter negative > numbers as the manuals are wanting me to set for frequency shifting to work > well. I am not in the mood to torch the three Discover 7.4s attached to the > SI6048. > > Makes me think there is a firmware update but SMA's website returned > nothing. It is currently running BFR 2.72 and SRR 2.72. The SB is from 2009. > > Any thoughts on an old (but newer) firmware? Is it even possible to update > the firmware on this dinosaur? > > While I am at it, can any one explain the difference between "PvOnly" and > "Gen" for setting 231.05 ExtSrc on the SI6048? The manual is lacking > reassuring details. > > Thanks for entertaining my sadomasochism. > > Aloha, > Lou Russo > Spree Solar Systems LLC > C-34322 > > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: [email protected] > > 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/[email protected]/ > 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 > >
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