[RE-wrenches] Schneider MPPT Nominal Voltage Won't Stick

[Dave Angelini Offgrid Solar]

A guess is too many devices on the xanbus. Are you using Facility?  The 
-60 reverting is a new one for me. Maybe isolate each one seperately in 
case one is malo.

buenas suerte!

Dave Angelini Offgrid Solar
"we go where powerlines don't"
    [1]https://offgridsolar1.com/ [2]  [1]
e-mail  offgridsolar at sti.net
text 209 813 0060

On 2026-01-13 4:29 am, Jason Szumlanski via RE-wrenches wrote:

> I have a new client with an existing Schneider dual XW Pro system with 
> four MPPT 100 and two MPPT 60 charge controllers. They have a SCP, AGS, 
> and Insight.
> 
> The system is reporting DC over voltage faults on the two inverters 
> (viewable via SCP. The battery voltage is not high. It's a bank of EG4 
> LL batteries that would hit their high battery cutoff well before the 
> XW detects a high battery condition.
> 
> I went through all of the setting and discovered that the two MPPT 60 
> were set to a nominal voltage of 36V. I fixed that by changing them to 
> 48V and cleared the faults and all was well. I did this though the SCP.
> 
> By the time I came home, however, the faults returned and the MPPT 60 
> both reverted to 36V nominal.
> 
> I'm not sure why the DC over voltage faults are showing up on the XWs, 
> but it seems related to the nominal voltage issue on the MPPT 60s.
> 
> Any ideas?
> 
> Schneider tech support has me wasting time today going for a boat ride 
> to the site to put a meter on the battery terminals, when I know it's 
> obviously not an actual battery voltage issue. I'm hoping to steer them 
> in a different direction.
> 
> Jason Szumlanski
> Florida Solar Design Group
> 
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Links:
------
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