[RE-wrenches] OB Charging/Comms Issues

[Ray Walters]

You could connect the Mate to the FM 100, but not the inverters. Screen, 
no  comms.

Ray

On 11/8/2024 2:28 PM, Chris Sparadeo via RE-wrenches wrote:
> Hi Jay,
>
> This is a new issue, but I don’t believe it’s generator related. 
> Without CC comms plugged in, generator is steadily charging. It was 
> serviced recently and has solid voltage and frequency under load.
> I am all for leaving the comms disconnected, but unfortunately there 
> is no screen on the FM 100, so PV output wouldn’t be visible.
>
>
> On Fri, Nov 8, 2024 at 4:14 PM jay via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org> wrote:
>
>     Hi Chris,
>
>     Is this new or has it been always like this?
>
>     jay
>
>
>
>
>
>
>
>     > On Nov 8, 2024, at 1:42 PM, Chris Sparadeo via RE-wrenches
>     <re-wrenches at lists.re-wrenches.org> wrote:
>     >
>     > Hey wrenchers,
>     >
>     > I have an off-grid customer with a pair of VFX 3648 inverters, a
>     FM 100 charge controller and two eVault classics in open loop. The
>     issue is when the generator is charging the batteries, incoming
>     amperage is all over the place and periodically, gradually drops
>     to 0A then ramps back up. This is creating really long generator
>     run times. When I turn off PV input, same results. When I turn off
>     both PV input and charge controller output (turning off the CC
>     entirely) the inverters hold a steady charge. If I remove the
>     charge controllers comms cable from the hub, they both play nicely
>     and charge cooperatively. This obviously sounds like a
>     communication issue, but unfortunately, without the help of OB
>     tech support, I am left speculating. I have checked all settings
>     with a fine comb and nothing looks to be out of place.  Has anyone
>     experienced something similar to this?
>     >
>     > Thanks!
>     >
>     > Chris Sparadeo
>     >
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