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<div dir="ltr">Hi Albert,</div>
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<div dir="ltr">I’m planning on moving the controls to the physics storage on Monday. </div>
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<div dir="ltr">I’ve tested the software with the single supermodule. It controls the temperature between the set points and controls ramping.
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Tomorrow I will confirm networking communications in the physics storage building for the cRIO controller. I have already ran the cable, I still need to reassign the cRIO to that subnet and test to make sure I can log in remotely.
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Once confirmed, I will need the test stand to be at room temperature to install the
<a href="https://assets.omega.com/pdf/test-and-measurement-equipment/temperature/sensors/rtds/RTD-2-F3102.pdf" title="https://assets.omega.com/pdf/test-and-measurement-equipment/temperature/sensors/rtds/RTD-2-F3102.pdf" id="LPlnk391925">
Omega High Temperature RTDs</a> on the supermodule front flanges and aluminum bar heater, for the controls...by Monday. These RTDs are rated for 480 degrees C.<br>
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I have attached a screen shot from the controls while I was testing at low temperature with the supermodule I have in the oven.</div>
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The software will control 4 power relays independently (Lowell RPC-20 picture attached) :</div>
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<b>1 relay will power a group of 3 supermodules in parallel (Bank 1)</b></div>
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<b>1 relay will power a group of 3 supermodules in parallel (Bank 2)<br>
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<b>1 relay will power a single aluminum bar side (Al 1)</b></div>
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<b>1 relay will power a single aluminum bar side (Al 2)</b></div>
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The software will monitor all 6 supermodules and 2 aluminum bar sides as well as the heated volume in front of the supermodules.</div>
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I have one extra RTD to monitor either the back end of the test stand or as a redundant temperature for the front heated volume area.</div>
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The heated volume will be monitored by an independent Omega process controller, I will set it to trip (and latch) all power to the heaters if the temperature exceeds the Omega set point. For the single SM test stand I used 400 degrees C.<b> The Omega interlock
should not be cleared until the test stand has been visually verified safe...this will require someone to go to the test stand to clear the latch</b>.
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There will be a monitor and keyboard so that your group can set the operating values after I train everyone, which I plan to do next week.
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All RTD temperatures will be datalogged for plotting.</div>
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Finally, I will prepare some documentation about the system so you can add the controls into your safety document.
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Regards,</div>
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Marc<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size: 11pt; color: rgb(0, 0, 0);" face="Calibri, sans-serif"><b>From:</b> shahinya@jlab.org <shahinya@jlab.org><br>
<b>Sent:</b> Thursday, April 13, 2023 2:00:13 PM<br>
<b>To:</b> Marc Mcmullen <mcmullen@jlab.org><br>
<b>Cc:</b> Mark Jones <jones@jlab.org>; Bogdan Wojtsekhowski <bogdanw@jlab.org>; Donald Jones <jonesdc@jlab.org><br>
<b>Subject:</b> test SM</font>
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<div class="PlainText">Hi Marc,<br>
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Thermal tests of 6 SM were started and now the situation has stabilized.<br>
If you are planning to test the control system, please let me know?<br>
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Thank you,<br>
Albert<br>
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