Hi Lou, It does sound like you may need a firmware update but it may have been pre configured for you long ago.
When you interconnect with the Sunny Boy through the Webbox, if you are off-grid, the country code parameter may say something like Default and/or Cntry Set. Then, you would program this parameter to be Off-grid or Off-grid 60 (for 60 Hz grid). It should auto populate adjusted parameters. As far as the PV only vs Gen question. If you have a generator connected to the Sunny Island, you will want to use "Gen". PV only means that there is no grid or generator in the system, just a Sunnyboy downstream of the load terminals, typically back feeding the load center. Good luck, I have forgotten almost everything about the Sunny Island now! On Mon, May 26, 2025 at 10:33 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 > > -- Mac Lewis *"Yo solo sé que no sé nada." -Sócrates*
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