[RE-wrenches] OB Charging/Comms Issues

[Tyrone Houck]

Out of curiosity, what mode are you in and what are the respective set
points for absorb, float, rebulk, etc. For PV vs inverter?

Tyrone Houck
Oregon Solarworks LLC
LRT #076
541-787-1366
tyrone at oregonsolarworks.com




On Fri, Nov 8, 2024, 1:28 PM Chris Sparadeo via RE-wrenches <
re-wrenches at lists.re-wrenches.org> 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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