[RE-wrenches] Strange conflict between FM100 and VFX3648 Charging.

[John Blittersdorf]

It was 30 ADC.  And it happened after adding the second inverter to
increase charge rate. I just checked last info on Optics
and found that the 2nd inverter is newer firmware (61 and 68) . I had made
sure all other settings were identical on both inverters but didn't look at
firmware.
Now I realize the 2nd inverter may be fighting with the first one if they
have different firmware.  Guess I better start there and update the older
inverter if possible.
 Actual charge rate was also half of what it should be based on AC charge
current settings.

John


On Sun, May 11, 2025 at 10:48 AM Jay via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hi John
>
> Do you mean 30 amps dc or AC from the inverter?
>
> Regardless I can only think the issue is programming.
>
> Is this a new issue after new equipment or ?
>
> Jay
>
>
> > On May 10, 2025, at 7:17 PM, John Blittersdorf via RE-wrenches <
> re-wrenches at lists.re-wrenches.org> wrote:
> >
> > 
> > The system is Flexware 500 with 2 VFX3648 Master and slave L1, with
> FM100.  There are 2 Fortress eVault batteries and MATE3s and HUB.  We had a
> problem with charging going between 0 and approx 30 amps DC. The current
> would climb up in about 10 seconds and then slowly go back to 0 in about
> the same amount of time and then repeat.  For some reason when we unplugged
> the FM100 from the HUB, charging would resume at about 40 ADC continuous
> from the generator..  This happens when the sun is out and when dark so the
> solar input is having no effect on this strange behavior.   Any ideas?
> >
> > John Blittersdorf
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