<div dir="ltr">Hi Bill,<br><div><br></div><div>Do you have a flexnet in the system?</div><div><br></div><div>I assume that it wouldn't matter if the FM80 is calibrated but you will want the flexnet perfectly calibrated if you are using Lithium. It's a very annoying but worthwhile process. Don't drop the little nuts.</div><div><br></div><div>Here is a paper on the procedure:</div><div><br></div><div><a href="https://www.outbackpower.com/downloads/documents/appnotes/fndc_field_cal_app_note.pdf">https://www.outbackpower.com/downloads/documents/appnotes/fndc_field_cal_app_note.pdf</a></div><div><br></div><div>The flexnet acts as a master voltage device so the system will default its voltage readings to the flexnet voltmeter. I'm not sure if the aux function of the FM80 uses the FM80's voltage or the flexnet voltage to drive the relay, but this could explain the issue.</div><div><br></div><div>Good luck!</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Mon, Jan 6, 2025 at 10:51\u202fPM Bill Battagin via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org">re-wrenches@lists.re-wrenches.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><u></u>
<div>
<p>Hey Mac,</p>
<p> I've tried to calibrate the voltage displayed on the
Mate with the Fluke on the battery bus bars but it doesn't seem to
take after the adjustment in "calibrate". But The Flexmax 80 does
calibrate perfectly to the actual battery voltage and its in the
FM80 aux landing that I'm using for this go-around to shut down
the inverter to save the batteries.</p>
<p> 'Manually' meaning.....?</p>
<p>Thanks,</p>
<p>Bill<br>
</p>
<pre cols="72">Feather River Solar Electric
Bill Battagin, owner
4291 Nelson St. (Shipping)
5575 Genesee Rd. (USPS, UPS)
Taylorsville, CA 95983
530-284-7849, 258-1641(cell)
CA. C10 Lic # 874049
Solar Powered since 1982
Home of the Sunny Side Up</pre>
<div>On 1/2/2025 5:53 PM, Mac Lewis via
RE-wrenches wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi Bill,
<div><br>
</div>
<div>Are all your voltages calibrated? Mate, Flexmax, FM80?
Where are you reading the voltages? </div>
<div><br>
</div>
<div>Does it work OK manually?</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, Jan 2, 2025 at
12:08\u202fPM Jay via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="auto">
<div dir="ltr">Simpliphy has a very high voltage LVD. </div>
<div dir="ltr">And the older OB can\u2019t be programmed to those
voltages </div>
<div dir="ltr"><br>
</div>
<div dir="ltr"><br>
</div>
<div dir="ltr"><br>
<blockquote type="cite">On Jan 2, 2025, at 10:04\u202fAM,
Tyrone Houck via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>>
wrote:<br>
<br>
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">\ufeff
<div dir="auto">
<div>Forgive my ignorance but why won't the vfx lbco
work for lithium?</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, Jan 2, 2025,
8:19\u202fAM Bill Battagin via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" target="_blank">re-wrenches@lists.re-wrenches.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I
am trying to use the "low battery disconnect" in aux
mode in a newly <br>
installed OB FM80 CC for Li battery low voltage
protection. I can't use <br>
the 19 year old OB VFX inverters for obvious
reasons. The plan is to run <br>
the 12 volt output from the aux output to a NC relay
to open it at 50 <br>
VDC of the bank of SimpliPhi 3.8M batteries. 50 VDC
is SimpliPhi's <br>
recommendation for LVD. The "output" of the relay
would be connected to <br>
the VFX's ON-OFF landings of that little green
terminal block in the AC <br>
side of the inverter and just act as a simple switch
for the inverter to <br>
turn it off to save the batteries.<br>
<br>
I'm using one of my newer FM80's as a
test run and have <br>
programmed the voltages in Low Battery Disconnect
mode and then put it <br>
in auto mode. However, as the CC goes below the
voltage set point, the <br>
AUX output does not turn on (time set for 5
seconds), as evidence in the <br>
CC's home screen and by checking for 12V at the AUX
terminal block.<br>
<br>
Any ideas of what I'm missing here to
make this work? I <br>
know the other solution, thousands of $$ for new
inverters which would <br>
be great but these folks have already invested quite
a chuck on array <br>
replacement and charge controllers.<br>
<br>
Thanks for any experience with this.<br>
<br>
Bill<br>
<br>
Feather River Solar Electric<br>
Bill Battagin, owner<br>
4291 Nelson St. (Shipping)<br>
<a href="https://www.google.com/maps/search/5575+Genesee+Rd?entry=gmail&source=g" target="_blank">5575
Genesee Rd</a>. (USPS, UPS)<br>
Taylorsville, CA 95983<br>
530-284-7849, 258-1641(cell)<br>
CA. C10 Lic # 874049<br>
Solar Powered since 1982<br>
Home of the Sunny Side Up<br>
<br>
<br>
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