Thanks Ryan. We are planning on installing RS485 anyway to empower a Sunny Webbox. Since we are Mac based we are counting on programming the SIs and SBs via the Webbox. SMA says it'll work.
Can anyone confirm? I have a service cable. Should I bring a PC for backup? Sent from my iPhone On Jun 23, 2013, at 4:34 AM, Ryan <[email protected]> wrote: > Jeff > First yes a 2 wire signal wire from the Sunny Island to the Genny, Second if > this is off grid only the Sunny Boy will be programmed with a SMA service > cable to be "Off Grid Only" and then it does not need the RS485 com cable > between it and the Sunny Island. The RS485 cable is only needed when > you want the Sunny Boy to switch between Off Grid and Grid tie. > > Ryan > > <email.png> > On 6/22/2013 10:26 PM, Jeff Clearwater wrote: >> Hi Esteemed Wrenchies, >> >> For a totally off-grid AC Coupled Sunny Island system to control an off-grid >> Kohler two-wire start generator I assume: >> >> 1) All I need to bring is control wire besides the genny and Sunny Island. >> >> 2) No external relays needed - all built in to the Sunny Island and genny. >> >> 3) If no grid-tie (only generator) then no need to program DIGIN signal as >> per SMA's tech note on Gen and grid systems? >> >> Am I missing something here? >> >> Thanks! >> >> Jeff >> -- >> >> Jeff Clearwater >> Ecovillage Network of the Americas >> The Visionary Commons >> Ecovillage Design Consultant >> www.visionarycommons.org >> skype - jclearwater >> cell - 413-559-9763 >> >> <image.png> <image.png> <image.png> <image.png> <image.png> >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> -- >> Jeff Clearwater >> Village Power Design >> Renewable Energy Design & Installation >> Ecovillage Design Consultant >> >> NABCEP™ Certified Solar PV Installer >> Licensed Solar Contractor in CA - C-46 >> www.villagepower.com >> 413-559-9763 >> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> >> >> >> _______________________________________________ >> List sponsored by Home Power magazine >> >> List Address: [email protected] >> >> Change email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out participant bios: >> www.members.re-wrenches.org >> > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Change email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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