<div dir="ltr"><div>The slow response on the frequency shift is for the XW+ only, and mine is an early model with no firmware updates since new. The XW Pro's main difference from the XW+ besides UL1741-SA is a much faster processor. I've heard that the frequency shift works quite well now, especially with UL1741-SA grid tie inverters. <br></div><div><br></div><div>Brad<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 12, 2020 at 7:09 PM Mark Frye <<a href="mailto:markf@berkeleysolar.com">markf@berkeleysolar.com</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>
<p>I see. <br>
</p>
<p>What you say about the frequency shift being slow makes me again
doubt the value of even using it in my application.<br>
</p>
<p>I have a controller that can regulate the AC dump load. That same
controller has a high limit switch which I could use to cut the AC
feed to the GT inverters. But then both functions are in the same
device. On the other hand, it is a very reliable device
so....perhaps sufficient.<br>
</p>
<div>On 6/12/2020 6:37 PM, Bradley Bassett
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>I have a relay on the XW+ Aux and also frequency shift
which is usually slower, so the relay usually cuts out first.
I also have a DC coupled array feeding the system. <br>
</div>
<div><br>
</div>
<div>Brad<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Jun 12, 2020 at 4:34
PM Mark Frye <<a href="mailto:markf@berkeleysolar.com" target="_blank">markf@berkeleysolar.com</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>
<p>Yes an elite group within an elite group.</p>
<p>So the SB240 does not have frequency shift /wattage
control. How are you implementing charge control in stand
alone mode?<br>
</p>
<div>On 6/12/2020 4:28 PM, Bradley Bassett wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>Wow! Someone else with SMA SB240's, I have 12 of
them that I've AC coupled to an XW+5548. They are very
solid performers. <br>
</div>
<div><br>
</div>
<div>Brad</div>
<div>AEE Solar<br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Jun 12, 2020
at 3:39 PM Mark Frye <<a href="mailto:markf@berkeleysolar.com" target="_blank">markf@berkeleysolar.com</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">Hello,<br>
<br>
I have a small array of 8 - SMA SB240 microinverters
on the roof. Peak <br>
power out of the array has never exceeded 1800 W.<br>
<br>
I am adding a Magnum MS-PAE 4448 with a 315 AH flooded
Lead Calcium <br>
battery bank.<br>
<br>
Cheers<br>
<br>
On 6/12/2020 12:31 PM, Chris Schaefer wrote:<br>
> G'Day Mark,<br>
><br>
> Which grid tied inverter are you attempting to AC
couple with. I <br>
> apologize if you already called it out in the
thread.<br>
><br>
> Christopher<br>
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