[RE-wrenches] Comms for mixed IQ-series and legacy Enphase circuit

[Jason Szumlanski]

Are you sure the boxes don't have conversion kits inside. They send us IQ7s
with dongles to adapt to previous generations. The comms are not an issue,
however sometimes you need to request firmware updates to make things work
I've found.

Jason Szumlanski
Florida Solar Design Group


On Wed, Apr 6, 2022, 6:24 PM Nathan J. Stumpff via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Hello Wrenches,
>
> We received IQ7 inverters from Enphase as RMA replacements for failed
> legacy (M175 and M190) inverters. I understand the IQ7 PLC is line to line,
> and the legacy INV PLC is line to neutral. Have any of you successfully
> gotten a circuit with a mixture of IQ7 and legacy INV to communicate?
>
> This is a large project and shuffling old INV in order to make separate
> circuits with only IQ7 and only legacy INV will be difficult and expensive.
> It appears that Enphase is telling us we need to do that (is that correct
> Nick S.?) but I am trying to see if any of you have successfully mixed on
> the same circuit, and anything you may have had to do to make the
> communication work. There are some older threads about installing ferrite
> loops to reduce noise, but I haven't found anything specifically about
> mixed circuits.
>
> Thanks,
> -Nathan
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