[RE-wrenches] 4 XW+ 6848 with AC Coupling problem

[greg egan]

Dave and Maverick,

Thanks for the info.  Dave,

- Grid support is off.  Was never on.
- inverters were purchased in Sep 2019.  Installed and turned off in Sep 
2020.  Finishing installation now.
- they worked a few days ago.  sometimes they sell to each other, 
sometimes they don't.  Last I looked they were behaving.
- all named differently
- are they really no longer supported?  if so it begs the question, how 
long will anything SE sells be supported?

Maverick,

- only one master
- I may go adding them one at a time if they start selling to each other 
again.  It MAY be that when I lay the SCP down sometimes I'm laying it 
too close to the Batt cables and maybe there's some noise generated on 
the line?  who knows.

Since you like the config tool, do you know how to set the voltages so 
they're all the same?  It seems like you're supposed to make the 
inverter you want to adjust the output voltage on,  you're supposed to 
make that inverter the master.  When I try (even with all the other 
inverters off) the inverter gives me a fault and shuts off.  I forget 
the F- number but it's like a naming conflict fault of some sort.

I'm thinking of trying to
- kill power to all the inverters.
- erase anything in the SCP if I can figure out how.
- disconnect all CAT 5 cables from the inverters except the cable to the 
SCP and the end plug for the one I'm working on.
I'm hoping that MAYBE that will allow me to get the voltages within .5 
of each other per the manual.  I don't understand why that should matter 
since they all are connected with AC SYNC cables but it might be the 
problem.  Who knows?

I've run into another problem fwiw.  We're trying to charge a NiFe 
battery bank at 66 VDC.  The SCP and the inverters show a hi batt 
voltage warning sometimes and even go in to fault sometimes.  That's 
supposed to happen at 68VDC.  I've never seen that on my Fluke 187 or on 
the SCP.  It's tough enough to get it to 66v.  I may have seen it @ 66.5 
but never 68.  Does anyone know what the real programmed HBCO is for 
these inverters because it's definitely not 68.  Just wondering if 
anyone else has found a solution.  Inverters shutting on HBCO is not a 
really cool feature.

On the 80/600 Charge controllers I've gotten a weird error, something 
like HiFastOCErr.  It's supposed to be when the CC is putting out over 
140 amps DC for more than 5 seconds.  It stops the CC from charging 
which is also not a cool feature.  No way of course it's putting out 140 
amps or even close.  Anyone know what this really means?  I'm guessing 
that it means the CC is putting out more than 4800 watts.  I set the 
Percent Charge to 90% just to see if that helps.  72 amps X 66 VDC is 
just under 4800 so we'll see if it works.

I'll try to make a post of all the errors and ommisions I find on the 
XW+ and Connext gear I'm working on, especially if I figure out how the 
gear actually works and what the error/fault/warnings really mean.

Thanks very much for writing, I really appreciate it.  Sorry for the 
slow response to comments today - comm issues.

Greg Egan
Remote Power Inc.
> From: greg egan <greg at remotepowerinc.com>
> To: RE-wrenches at lists.re-wrenches.org
> Subject: [RE-wrenches] 4 XW+ 6848 with AC Coupling problem
>
> The XW+ inverters are selling to
> each other.? XW+'s are disconnected from the load and from generator
> input.? System is off grid.? When I switch the ATS the inverters are
> supposed to pick up the load.? ~ 12 kW, maybe 18 worst case.? They are
> selling to each other and when I make the switch the lights flicker and
> the inverters go off, then they try to go on, and go off, etc.
>
> Sync cables are hooked up.? 4 XW+ and 1 SCP on one xanbus network. No
> gateway hooked up at this time.? PV will be on it's own Xbus network.?
> Not planning on using the Gateway if I can help it.
>
> Thanks for any light you can shed on this.? Not sure why Schneider would
> ever want their inverters to sell to each other
>
> ------------------------------
>
> Message: 4
> Date: Sat, 12 Jun 2021 13:30:13 -0700
> From: Dave Angelini Offgrid Solar <offgridsolar at sti.net>
> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> Subject: Re: [RE-wrenches] 4 XW+ 6848 with AC Coupling problem
> Message-ID: <03332e63e95983efcc841f3a8a579ed4 at 127.0.0.1>
> Content-Type: text/plain; charset="utf-8"
>
>   
> If they are selling you need to verify that grid support
> is off!. There are so many settings that interact. By default it was.
>
> I
> will ask, these are old units right? Did they ever work right? Is the
> firmware the same on all and do they have different ID numbers for the
> network? You may try going back to defaults. There really is not enough
> info in your post to go further.
>
> XW+ are out of support for US split phase
> and replaced with XWP about a year back. How old are they?
>
> If it were me,
> I would make sure that 2 of the units work correctly first. Take all other
> xw's off xanbus/Sync and test.
> Good Luck !
>
> Dave Angelini Offgrid
> Solar
> "we go where powerlines
> don't"
> http://members.sti.net/offgridsolar/
> e-mail
> offgridsolar at sti.net
> text 209 813 0060
>
> ------------------
>
> Message: 5
> Date: Sat, 12 Jun 2021 15:46:36 -0500
> From: Maverick Brown <maverick at mavericksolar.com>
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
> Subject: Re: [RE-wrenches] 4 XW+ 6848 with AC Coupling problem
> Message-ID: <604448C0-3EE2-461F-B5EE-D7382E229FDA at mavericksolar.com>
> Content-Type: text/plain; charset="utf-8"
>
> It?s a good idea to make sure only one set as Master the others are slave. Start by adding one slave at a time. Turn off Search, Charger and Grid Support until you know they are playing happy.
>
> I prefer using the XW Config and walking through the wizard, but you can use Multi Unit setup, which will put everything in standby. I have several 8-12 unit XW sites 3-4 Inverters, SCP, AGS and Combox/ Gateway, etc.
>
> It can be done.
>
> Maverick Brown
> Off-Grid Solar Commander since 2006
> Maverick Solar Enterprises, Inc.
>   ? Solar Commander Remote Power
>   ? SunFlow Systems Cathodic Protection
> maverick at mavericksolar.com
> 512-460-9825
>