Hertz dropping on Conext 6848Pro

We are off grid and had a Schneider system installed with 3 of the "new" 6848 Pro inverters. Been complete nightmare. Our installer has been installing for 10 years and has hundreds of the earlier versions installed and said he's never seen anything like this. When ags shuts generator off, all the arc faults (code here) trip and well pump won't run. The install tech discovered that the hertz drops to 45 when the generator shuts off, but ONLY with the AGS. It doesn't do this when we use the manual switch. Schneider sent my installer experimental firmware (I say this because it hasn't been released yet apparently), and that solved the hertz problem. But now when batteries get to low voltage and gen comes on, the inverter won't charge the batteries and we loose power. This crap has been going on for over a month and Schneider doesn't seem to have any answers. Any other off grid folks have this problem with this new version of the 6848XP?
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Where are you? NA ? I would disable AGS and work on that later. You can start a genset right?
Please list historic faults, warnings, and events. Your problems probably stem from a setting mistake. I would list all settings that have been changed. If you can't, then a reset to factory may help.
There are too many interactive settings that can cause issues. This alone is one of the reasons since XW came out in 2005, I have been for building an offgrid firmware version to get all of the grid settings out of XW. The same with Outback Radians. Just too many interactions that should not be in an offgrid power system.
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Did you hear the relay open immediately?
I have noticed when ACin is just open circuited (opening ACin breaker) when supplying little to no current into ACin the inverter sometimes wanders off without releasing ACin relay connection. If you do a quick OFF, back ON, OFF of the input breaker the inverter disconnects and stays on freq.
If you think about how the hybrid inverter connects to ACin, unless it detects a current change it doesn't really have a way to know the ACin has been disconnected. The voltage to ACin will be supplied by inverter though ACin relay that stays closed when ACin breaker is opened with little ACin current. Normally the ACin source will momentarily load down the input which is detected by inverter causing it to disconnect.
Some newer generators, particularly inverter generators, tri-state float their output when generator is shut down.
To make the control tougher for the inverter it has to sort out if the current change is due to a generator wobble in ACin freq or actually a disconnect.
For now, if you really need a genset in summer, I would wire just one XWP for a genset. Since you have 3, make the 3rd its own charger by disconnecting the stacking cables & xanbus, wire genset directly into its AC2.
The other thing you can try is loading the opposite firmware for your region (the Hawaii electric). This has fixed a mult xwp system for genset. Maybe you have tried this?
The last thing if this is serious, is forget about AGS for now and manually start genset. Make sure AC coupling is not selected !!!
Why do you need a 3 xw system offgrid BTW. Good Luck?
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I just opened some trouble tickets with Schneider... awaiting a reply. Everyone speaks of this a thing a year ago, was there a fix?
Help please!!!
This was fixed about v1.5 I think. People were told "then" not to run multi XWP until the firmware was revised. You should do that until you get this updated. Ouch on your loads!
I never noticed this during field test because I only need a single XW offgrid. In most of the many homes I have been involved with,
the owner has really outdated loads or has not tried to get an Offgrid mentality. The biggest offenders are old 2 ton air conditioning and electric dryers, ranges, and water heaters. Some having all four cycling or doing this at night along with a deep well pump! Arrrgggggg!
I hope this is not you JB !
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I would have expected a brand new unit to have brand new firmware. I've built to off-grid. In fact, we closed on the house I had built yesterday and here I am today without power. I don't have those loads you speak of. I have an efficent ducted split unit as AC. It works great. Then I have a well pump and a boster pump. My well pump fills a storage tank when the sun is bright, the booster fills a presure tank at much lower amperage. This was all working great until 2 weeks ago. It was about the time I installed the AGS as the Genset was the last part I put together. I've reached out to WSS (Solar Unbound) as well. I presume they will just say speak to Schneider. You pay the "big bucks" for the tech suppport, but... It's realy just elemetry things. I argued with them about my 150's, they where convinced they were fine. Midnite said otherwise, they quickly informed me I was sold defective Charge Controllers.
In my opinion, mixing different makes of equipment in a networked system like XWP is not good design! Good Luck !
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