I have a suggestion. The Atkinson is pretty amazing. What if you set up each generator with 1 GSCM. Start signal is sent to generator #1 and the GSCM tries but the generator doesn’t start, I believe it has a fault circuit which maybe you could use to trigger generator #2 GSCM AGS start sequence.
Just a thought jay > On Feb 22, 2025, at 11:50 AM, William Miller via RE-wrenches > <[email protected]> wrote: > > Dan: > > The application is an off-grid animal rescue facility with a requirement for > high reliability. We recently acquired a second generator and a Kohler RDT > transfer switch. The RDT will automatically transfer to either of two inputs > based on where AC is detected. However the RDT logic is not capable of > transferring the start signal if one generator fails to start. > > I looked at the Atkinson web site but I did not see anything that was quite > right. It may be that they can create something but then I would miss out on > that part of the fun. > > It’s easy to overlook how complicated it is starting an internal combustion > engine. You have to crank until the engine starts, you can’t crank too long, > you need to try multiple times, etc. This is why the Trace SW 3-wire start > circuitry was so amazing. > > I sketched out an electro-mechanical solution but I soon realized the logic > was a bit too complicated. The inverter will want to attempt the start > multiple times before giving up. I’d like to do the same and then switch to > starting the second generator after maybe 3 failed attempts at starting Gen > 1. It seems I need to code some kind of script to execute this logic. This > is where the Control by Web solution seems to be the best fit. I have used > their products and they are excellent. > > If others are interested I can post back when I crack this nut. > > Thanks everyone for your collective wisdom and comradery! > > William Miller > > Miller Solar > 17395 Oak Road, Atascadero, CA 93422 > 805-438-5600 > www.millersolar.com <http://www.millersolar.com/> > CA Lic. 773985 > > > From: Dan Fink [mailto:[email protected] <mailto:[email protected]>] > Sent: Saturday, February 22, 2025 9:07 AM > To: [email protected] <mailto:[email protected]>; RE-wrenches > Subject: Re: [RE-wrenches] Generator failure alarm > > William - have you talked to Atkinson in Utah? Last time I talked to them > they could configure just about anything for such applications. > Dan Fink > Owner, Buckville Energy Consulting LLC > IREC Certified Instructor for PV and Small Wind Installation > NABCEP Certified PV System Inspector > NABCEP PV Associate > d <mailto:[email protected]>[email protected] > <mailto:[email protected]> > 970-672-4342 > > > > > On Fri, Feb 21, 2025 at 1:54 PM William Miller via RE-wrenches > <[email protected] > <mailto:[email protected]>> wrote: >> Colleagues: >> >> Is anyone aware of an off-the-shelf device that will give me a contact >> closure if a generator is called and does not produce AC after a set amount >> of time? I am sure I could design and build one but before I do I’d like to >> see if there is a ready-made version. >> >> I hope I am not making a pest of myself asking so many questions… >> >> Thanks in advance. >> >> William Miller >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> <http://re-wrenches.org/> >> >> List Address: [email protected] >> <mailto:[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 >> <http://www.members.re-wrenches.org/>_______________________________________________ > 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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