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

[Ray Walters]

The aux off is only if the generator doesn't start.  You need to set the 
gen start voltage higher. Aux off is last ditch shut down, set for 44v 
for lead acid, or 47 to 49v, depending on the battery and inverter.   
Hopefully DC coupled PV will raise the voltage enough to turn the 
inverters back on the next day.

This is my concern on Solark installs, I just noticed that the inverter 
won't pass through PV, if it hits its LVD set point.

On 7/20/2023 3:04 PM, jay via RE-wrenches wrote:
> HI All,
>
> I wanted to revisit this thread for one reason.
>
> If you turn off the inverter at the remote on/off with the AUX relay, 
> then starting the generator won’t have any impact as the inverter is off.
> So someone will have to go and reset the AUX relay.
>
> Vs
>
> If you do a relay on the AC output, when you start the generator, it 
> will start charging, raising the battery volts, causing the AUX relay 
> to close AC output relay and you’ll have power in the house.
>
> Am I missing something?
>
> thanks
>
> jay
>
>
>
>
>
>
>
>
> Here is the last email I think:
>
> Mac,
>
> I think you've got an elegant solution to the problem. All you need is 
> an inexpensive relay and to program the Aux output for loadshed. I 
> believe shutting down the inverter with the remote on/off contacts is 
> actually less stressful on the inverter than opening a relay or 
> contactor on the load side.
> Kent Osterberg
> Blue Mountain Solar
>
>
> On 7/11/2023 5:19 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!
>
>     --
>
>
>
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