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<article id="node-1436765" class="node node-logentry article ia-n clearfix" role="article">
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<a href="https://logbooks.jlab.org/entry/4363705" rel="bookmark">ECal Heater Safety System Trip</a>
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<p class="author-datetime">
Lognumber <a href="https://logbooks.jlab.org/entry/4363705" class="lognumber" data-lognumber="4363705">4363705</a>. Submitted by <a href="https://logbooks.jlab.org/user/beng">beng</a> on <time datetime="2025-04-23T11:55:46-0400" pubdate="pubdate"><a href="https://logbooks.jlab.org/entries?start_date=1745420146&end_date=1745427346&book=DSGLOG&book=HALOG">Wed, 04/23/2025 - 11:55</a></time>. </p>
<table class="field-vitals">
<tr><th>Logbooks: </th><td><a href="https://logbooks.jlab.org/book/dsglog">DSGLOG</a> <a href="https://logbooks.jlab.org/book/halog">HALOG</a></td></tr>
<tr><th>Entry Makers: </th><td>jonesdc</td></tr>
<tr><th>References: </th><td><a href="https://logbooks.jlab.org/entry/4363477">4363477 - ECal trigger rates increase with decreasing temperature!</a></td></tr>
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<p>The safety system tripping was due to the cRIO expansion chassis that houses the relays for the PSICs as well as the heartbeat relay channel to disconnect from the network. Thus the main program was unable to toggle the timer relay and it tripped the system.</p>
<p>I was unable to ping it (halla-crio-ecal4 is the hostname), but the network port LEDs on the cRIO were acting like it was connected. Power cycling the chassis brought it back online.</p>
<p>While we were down there we also connected the remote PDU to port 8 on the switch for the rack, but no LEDs were lit up. Don will followup with Ellen to see about getting this on the network.</p>
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