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You want to be careful when paralleling a Charge Controller and a
Pump on a PV array. The Charge controller and pump can do
interesting things to each other. I would suggest if doing this you
either use blocking diodes on the pump and Charge Controller or you
use a NO / NC relay and let the pump or Charge controller pick the
appropriate position for he relay.<br>
<br>
Ryan<br>
<pre class="moz-signature" cols="72">Ryan Stankevitz
Technical Support Manager
MidNite Solar Inc.
<a class="moz-txt-link-abbreviated" href="mailto:ryan@midnitesolar.com">ryan@midnitesolar.com</a>
Office - 360-403-7207 XT 151
Cell - 207-416-2006
Skype ID ryan.midnite</pre>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 6/6/2013 2:48 AM,
<a class="moz-txt-link-abbreviated" href="mailto:toddcory@finestplanet.com">toddcory@finestplanet.com</a> wrote:<br>
</div>
<blockquote cite="mid:1370501302.373527154@webmail.finestplanet.com"
type="cite"><font size="3" face="arial">
<p style="margin:0;padding:0;">so it might be possible to power
the pump array direct and also charge batteries through a hv
mppt charge controller at the same time??</p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;">todd</p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;"> </p>
<p style="margin:0;padding:0;">On Wednesday, June 5, 2013
8:18pm, "jay peltz" <a class="moz-txt-link-rfc2396E" href="mailto:jay@asis.com"><jay@asis.com></a> said:<br>
<br>
</p>
<div id="SafeStyles1370501197">
<div>Hi Todd</div>
<div>As bob-0 and Larry have said</div>
<div>And the sqflex is a mppt unit, nothing else needed</div>
<div>Jay</div>
<div>Peltz power<br>
<br>
Sent from my iPad</div>
<div><br>
On Jun 5, 2013, at 7:30 PM, <a moz-do-not-send="true"
href="mailto:toddcory@finestplanet.com">toddcory@finestplanet.com</a>
wrote:<br>
<br>
</div>
<blockquote>
<div><span style="font-family: arial; font-size: 12pt;">
<p style="margin:0;padding:0;margin: 0; padding: 0;">ok
wrenches... here is a hair brained idea i came up
with.</p>
<p style="margin:0;padding:0;margin: 0; padding: 0;"> </p>
<p style="margin:0;padding:0;margin: 0; padding: 0;">i
have this customer with the grundfos pump being
powered, array direct by 10 astropower 75's in
series... so around 170 vdc.</p>
<p style="margin:0;padding:0;margin: 0; padding: 0;"> </p>
<p style="margin:0;padding:0;margin: 0; padding: 0;">what
would happen if a hv mppt charge controller were
paralleled with the panel output feeding the pump?</p>
<p style="margin:0;padding:0;margin: 0; padding: 0;">would
the cu200 & charge controller mppt algorithms
fight each other?</p>
<p style="margin:0;padding:0;margin: 0; padding: 0;"> </p>
<p style="margin:0;padding:0;margin: 0; padding: 0;">thanks,</p>
<p style="margin:0;padding:0;margin: 0; padding: 0;"> </p>
<p style="margin:0;padding:0;margin: 0; padding: 0;">todd</p>
</span><br>
<br>
<br>
Sent from Finest Planet WebMail.</div>
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