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    <p>Chalk it up as another reason Rapid Shutdown is a bummer.</p>
    <p>Bill</p>
    <pre class="moz-signature" cols="72">Feather River Solar Electric            
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049</pre>
    <div class="moz-cite-prefix">On 4/28/2022 9:11 AM, Harry Mahon via
      RE-wrenches wrote:<br>
    </div>
    <blockquote type="cite"
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        <p class="MsoNormal">Dave \u2013 Unfortunately the SPS feature is not
          \u201cback\u201d fully.  Choosing \u201cyes\u201d during commissioning for the SPS
          feature allows for it to work (with switch and outlet
          installed) but ONLY for the same solar day as an outage
          occurs.<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">When the Sunny Boy goes to sleep, the
          sunspec transmitter will stop and the array will be in
          shutdown the next day.<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Apologies for any confusion, as this is not
          the \u201csame\u201d SPS that we have been talking about since 2013\u2026.<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Please also note that choosing \u201cyes\u201d for
          the SPS feature during commissioning means the DC disconnect
          must be the Rapid Shutdown initiator, as the SunSpec signal
          must be disconnected from the array when the grid fails to
          trigger shutdown.  If the AC breaker or other AC disconnect is
          to be used as the RSI, \u201cno\u201d should be chosen for that second
          menu choice after \u201cSunspec\u201d is chosen for shutdown method on
          tab 4 of the Install Assistant.<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">It is unlikely that this generation of
          Sunny Boy will improve the SPS situation, but SMA is working
          to fully reintroduce the SPS feature with the next gen Sunny
          Boy.  Stay tuned\u2026<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">Best regards \u2013<o:p></o:p></p>
        <p class="MsoNormal">Mike<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal"><br>
          <span style="font-size:12.0pt">Michael Mahon</span><br>
          Senior Technical Trainer, Solar Academy<br>
          <b>SMA America</b> <o:p></o:p></p>
        <p class="MsoNormal">3925 Atherton Rd<o:p></o:p></p>
        <p class="MsoNormal">Rocklin, CA 95765<br>
          Mobile:   +1 916 918 9412<u><br>
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          <p class="MsoNormal"><b>From:</b> RE-wrenches
            <a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches-bounces@lists.re-wrenches.org">&lt;re-wrenches-bounces@lists.re-wrenches.org&gt;</a>
            <b>On Behalf Of </b>Dave Tedeyan via RE-wrenches<br>
            <b>Sent:</b> Wednesday, April 27, 2022 10:08 AM<br>
            <b>To:</b> RE-wrenches
            <a class="moz-txt-link-rfc2396E" href="mailto:re-wrenches@lists.re-wrenches.org">&lt;re-wrenches@lists.re-wrenches.org&gt;</a><br>
            <b>Cc:</b> Dave Tedeyan <a class="moz-txt-link-rfc2396E" href="mailto:dave@sungineersolar.com">&lt;dave@sungineersolar.com&gt;</a><br>
            <b>Subject:</b> [RE-wrenches] SMA Rapid Shutdown and Secure
            Power Supply<o:p></o:p></p>
        </div>
        <p class="MsoNormal"><o:p> </o:p></p>
        <div>
          <p class="MsoNormal">Hi All, <o:p></o:p></p>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div>
            <p class="MsoNormal">The last SMA-41 inverter I
              commissioned, had the option for SunSpec rapid shutdown
              with Secure Power Supply. I just talked to a level one
              tech who was not particularly familiar, but told me that
              with a sunspec rapid shutdown device like the JMS-F, you
              can still use the Secure Power Supply as if there was no
              rapid shutdown. I had stopped installing the SPS on
              rooftop systems, because if losing grid power initiates
              rapid shutdown, then you clearly do not have the power to
              run a SPS. But it sounds like maybe the inverter has the
              smarts to wake the solar back up once you flip the switch
              to activate the SPS. Can anyone here verify this? Have you
              done this, and does it work as expected with no extra
              hardware needed?<o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal"><o:p> </o:p></p>
          </div>
          <div>
            <p class="MsoNormal">Cheers, <o:p></o:p></p>
          </div>
          <div>
            <p class="MsoNormal">Dave<br clear="all">
              <o:p></o:p></p>
            <div>
              <p class="MsoNormal"><o:p> </o:p></p>
            </div>
            <p class="MsoNormal">-- <o:p></o:p></p>
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                                    <p class="MsoNormal"><b><span
                                          style="font-family:&quot;Arial&quot;,sans-serif;color:#ECBD00">Dave
                                          Tedeyan, P.E.<br>
                                          Owner | Sungineer Solar</span></b><span
style="font-family:&quot;Arial&quot;,sans-serif"><o:p></o:p></span></p>
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      <pre class="moz-quote-pre" wrap="">_______________________________________________
L</pre>
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