I like that approach, Jay. Great idea. It gets the job done and is self contained - using only the features of the inverter. The remote power off could still be used with another remote switch. If there aren't enough aux output ports in the system, one could add a Morningstar relay driver.

None-the-less, considering that Scneider Electric has made a lot of firmware changes to make the inverter compatible with lithium batteries, it is baffling that the low battery cutout hasn't been addressed.

Kent Osterberg
Blue Mountain Solar


On 3/22/2020 6:18 PM, Jay wrote:
Hi Kent,

Yes that’s what I mean.

According to the manual I’ve got, up to 52v for the low, 64 for the high.
Which is high enough to do what the simpliphi needs.

Jay



On Mar 22, 2020, at 5:37 PM, Kent Osterberg <k...@coveoregon.com> wrote:

 Jay,

Do you mean: use the Aux relay to activate the Remote Power Off? What is the low battery setting range for the Aux relay? I don't see it in the manual.

Kent Osterberg
Blue Mountain Solar


On 3/22/2020 4:04 PM, Jay wrote:
Ray,
Have you heard bought about using the Aux relay to control the AC output at what ever voltage you want?

Jay




On Mar 22, 2020, at 3:13 PM, Ray <r...@solarray.com> wrote:



That's the whole point: we need the LBCO to be higher than 48v to catch the beginning of that steep drop off, so that there is still enough reserve left to keep the monitoring and solar charge controllers in operation, and avoid the dreaded dark start.  With Simpliphi, we don't have the dark start, but it still requires manual reset.   This isn't theoretical, we have been having serious trouble with a system because of Schneider's inability to set the LVD above 48 v. Also setting the voltage higher (lower DOD) extends the cycle life of these batteries.  Otherwise, I love the stable 51 volts of Li+, even under load.

Ray Walters
Remote Solar
303 505-8760
On 3/22/20 4:15 PM, Jerry Shafer wrote:
Wrenches
Don't let the LBCU scare you as this battery has such a flat SOC line that when it falls off there is not much left in the tank. In addition set the flex net to low SOC at 15% and critical to 10%.

On Sun, Mar 22, 2020, 12:15 PM Sindelar Solar <al...@sindelarsolar.com <mailto:al...@sindelarsolar.com>> wrote:

    Specifically with Blue Ion, the installation manual recommends
    48V as LBCO, but also recommends setting it a bit higher:

    "Recommended Low Voltage Disconnect Setting: 48 VDC (~2-10%
    State of Charge)
    BMU will power down the Blue Ion 2.0 cabinet at 44 VDC (<1%
    State of Charge)
    Based on system discharge patterns, SoC and voltage
    correlations will vary.
    We recommend you err on the side of caution with a higher LVD
    setting and adjust as necessary.
    To prevent a dark start event, we recommend leaving a little
    reserve “fuel in the tank”."

    I have used 48VDC with success, and had one system indeed shut
    down at 44V, leaving 1% left to reboot.

    Allan

    On 3/22/2020 12:44 PM, Ray wrote:

    Blue Ion, and Simpliphi that I know of.

    Ray Walters
    Remote Solar
    303 505-8760
    On 3/21/20 2:48 PM, Dave Angelini Offgrid Solar wrote:

    I see what you mean Ray. Sorry I misread your mail. There
    are not too many batteries out there that need LBCO above
    48V. Which ones are you talking about please?

    *Dave Angelini Offgrid Solar*

    *"we go where powerlines don't"
    http://members.sti.net/offgridsolar/ e-mail
    offgridso...@sti.net <mailto:offgridso...@sti.net> text 209
    813 0060*

    On Sat, 21 Mar 2020 11:18:21 -0700, Dave Angelini Offgrid
    Solar <offgridso...@sti.net> <mailto:offgridso...@sti.net>
    wrote:

    Hi Ray,

    Which XW? There are 3 now. The old graybox XW defaults at
    44V LBCO and the range is 40 to 48V. There also was
    firmware back in its day that got older units updated.
    Schneider still has the firmware under discontinued products.

    XW+ is default 44V and adjustable 36 to 44 vdc.

    XW pro is running downstairs and I will take a look. It
    would be my guess that it is the same as XW+. I think one
    needs to be sure they are in Advanced settings to tweak
    LBCO also.

    I am not plugging Schneider and have done work for both
    Outback and Schneider as well as my clients. Hope this helps.

    *Dave Angelini Offgrid Solar "we go where powerlines don't"
    http://members.sti.net/offgridsolar/ e-mail
    offgridso...@sti.net <mailto:offgridso...@sti.net> text 209
    813 0060*

    On Sat, 21 Mar 2020 11:46:21 -0400, Ray <r...@solarray.com>
    <mailto:r...@solarray.com> wrote:

        We've been having good luck with SImpliphi, the pricing
        has recently gotten much more competitive.  As it's
        names states, its simple.  Each 3.8 kWh unit has an 80
        amp breaker built into the top, weigh about 75 lbs, and
        are a bit smaller than an L16 but with carry handles. 
        We use an insulated 2 pole combiner block to run all
        the parallel conductors to the main 2/0 cable.  No
        monitoring, but they do have an handy setup guide with
        recommended settings, specific for each manufacturer
        (including Outback).

        Note to all:  Schneider XW can still not set its LVD
        above 48, which basically makes it incompatible with
        most Li+ batteries.  Their tech support has been
        abysmal as well. We're looking forward to them as one
        of the larger companies in the business, to put
        additional resources into their engineering, and come
        out with at least a firmware update to correct this
        problem.

        Ray Walters
        Remote Solar
        303 505-8760

        On 3/20/20 3:59 PM, David Katz wrote:

            Hello Wrenches,
            I am working with some people that want to use a 20
            kw-hour to 30 kw-hour 48 volt lithium-ion battery
            with an Outback Radian and Outback FM charge
            controllers.
            They are considering using Discover, Blue-Ion,
            Battle Born or SimpliPhi batteries.
            Does any one have any recommendations of which
            battery functions best with the Outback system.
            Thanks,
            David Katz

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    New Mexico EE98J Journeyman Electrician
    Founder (Retired), Positive Energy, Inc.
    *505 780-2738 cell*

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