[RE-wrenches] Inverter On/Off Switch use Outback FX

[Starlight]

They did not anticipate the use with Lithium battery chemistry which is mostly discharged at 12.7V, and that happens to be the fully charged resting voltage of lead batteries. 

Seems as though by now manufacturers should have increased the LBCO voltage range in the software.

Larry Crutcher
Starlight Solar Power Systems



On Jul 13, 2023, at 9:29 AM, Ray Walters via RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:

Hi Mac;

I've used the aux control on charge controllers to turn on/off the FX inverters, just as you planned.  Works fine, and solves the LBCO programming issue.

Now, if someone from the manufacturing side could PLEASE explain why they limited the LBCO on all these inverter models.  Absolutely makes no sense.  Schneider, Outback, even Magnum is too low.......?

Ray Walters



On 7/11/2023 6:19 PM, Mac Lewis via RE-wrenches wrote:
> Hello Wrenches,
> 
> I'm trying to solve an issue with an older Outback FX system.  It's a quad stack of Outback 3648 FX inverters and he has a couple of Fortress eVault and an unreliable generator. The LBCO setting can't go high enough to cut out before the eVaults cut out so he occasionally will have to direct charge the eVault to get things running again.
> 
> I'd like to use a 12V Aux relay logic to trip the primary inverter on/off contacts before we go into battery shutdown so the solar has a chance to recover the system.  Pretty simple overall but I wanted to see if there are any known ill effects of doing this with substantial load on the system.  Of course, I can use a power relay but this may be better.
> 
> Thanks for your input!
> 
> -- 
> 
> 
> 
> Mac Lewis
> 

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