Mike: Ac input is 207 Vac at 60.00. Display says unit configured for 208.
I have been talking to tech support for days. They say my voltage is low. That disagrees with the manual and the name plate sticker. A bit frustrating... I bid the job and I can’t bill until this is sorted. Ah, the joys of being one’s own boss. Thanks for your help. William > On Apr 23, 2019, at 12:21 PM, Harry Mahon <[email protected]> > wrote: > > William - yes, waiting is usually waiting for grid to come back within spec > or for DC voltage to get to start. 260 should be plenty. 208V with neutral > should be fine without adjusting the jumpers. Have you measured the AC > voltage at the inverter terminals? > > May want to contact service for this one. 1-877-697-6283. > > Best regards – > Mike > > From: William Miller <[email protected]> > Sent: Tuesday, April 23, 2019 12:40 PM > To: Harry Mahon <[email protected]> > Cc: RE-wrenches <[email protected]> > Subject: Re: [RE-wrenches] SMA Micro-grid > > Mike: > > Thanks for the reply. Good information. > > The AC system is 208. The data sheet indicates that for 208 the PV startup is > 220. Today we have 260 VDC. That should be enough!? > > I checked EMT he AC frequency in case it was on shift mode. It is right at > 60.00. > > Still in waiting mode. I had always thought “waiting” was for grid reconnect > timeout... > > William > > On Apr 23, 2019, at 8:47 AM, Harry Mahon <[email protected]> > wrote: > > William – > Waiting mode means the DC voltage is below the inverter start. For SB > 4000-12, that would be 285 VDC (and will work to 250VDC once that is hit). > > If you knock on the inverter lid, the display will cycle and you will see the > DC voltage displayed. > > If the yellow LED is not on, this should not be an AC side issue. > > I do not think the “Backup Mode” parameter would be the cause, but if the > voltage check shows well above PVstart, it would be worth a call to service. > If the inverter was left in on grid mode, then it will work when the SI is > creating a micro-grid with frequency within UL1741 limits. If the system is > off-grid, I would think the SB would have been set to off-grid mode rather > than enabling Backup Mode to “on all” that allows switching from on-grid to > off-grid parameter sets by RS485 command. > > Best- > Mike > > From: RE-wrenches <[email protected]> On Behalf Of > William Miller > Sent: Monday, April 22, 2019 6:54 PM > To: RE-wrenches <[email protected]> > Subject: [RE-wrenches] SMA Micro-grid > > Friends: > > I am working on an AC coupled SMA system in an off-grid setting. We have an > SB4000-12 that was disconnected for a number of years and we reconnected it. > The inverter is stuck in the waiting mode and will not generate power. The > Sunny Islands and Sunny Boys are connected via an RS485 communication system. > > I suspect there is a programming step I have not yet accomplished. I recall > some years ago I programmed the other Sunny Boys for off-grid operation. I > can’t find anything in any of the manuals about how to check the programming. > I also suspect SAM tech support talked me through this and the information > may not be published. > > Does this ring a bell with any of you? Any advice? > > Thanks in advance. > > William Miller > > Miller Solar > 17395 Oak Road, Atascadero, CA 93422 > 805-438-5600 > www.millersolar.com > CA Lic. 773985 > > Quote of the day: “If there is a job you hate, get really, > really good at it. Maybe you will hate it less.“ W. Miller >
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