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<p>hi andy,</p>
after discussing the matter with patrizia, patrizia has advised us
to investigate the problem today.<br>
so, we'll be looking into this issue to report to patrizia the
condition of the system tomorrow.<br>
<br>
amrit<br>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject:
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<td>Re: HDice In-Beam Cryostat RealTime Controller failure</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th>
<td>Mon, 08 Aug 2016 14:29:55 -0400</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>Dr. A.M. Sandorfi <a class="moz-txt-link-rfc2396E" href="mailto:sandorfi@jlab.org"><sandorfi@jlab.org></a></td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th>
<td>Amrit Yegneswaran <a class="moz-txt-link-rfc2396E" href="mailto:yeg@jlab.org"><yeg@jlab.org></a></td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">CC: </th>
<td>Xiangdong Wei <a class="moz-txt-link-rfc2396E" href="mailto:xwei@jlab.org"><xwei@jlab.org></a>, Michael Lowry
<a class="moz-txt-link-rfc2396E" href="mailto:mlowry@jlab.org"><mlowry@jlab.org></a></td>
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<pre>Hi Amrit,
In case it's of help, the failure of the real-time controller may have been
triggered by the power outage last Wednesday, after which various components
(eg. Pumps, valves) went to a state they shouldn't have been in. At least
there appears to be this time coincidence, although the controller is
powered through a UPS.
There is some urgency here. We have liquid helium on order to begin a
cool-down next Monday, 8/15. Your help would be appreciated.
Andy
On 8/8/16, 1:16 PM, "Michael Lowry" <a class="moz-txt-link-rfc2396E" href="mailto:mlowry@jlab.org"><mlowry@jlab.org></a> wrote:
> Hello Amrit,
>
> I am writing to request technical assistance for the HDice group in
> diagnosing and repairing/replacing the RealTime controller which forms an
> integral part of the control system for the HDice In-Beam Cryostat. This
> system was put together by Robert Teachey in collaboration with a post-doc in
> our group, Chris Bass, roughly 5 years ago. It centers on a National
> Instruments RealTime Controller ( NI CRIO-9073 ) with crate with 3 modules (NI
> 9472-8chn DO, NI 9208-16chn AI current, NI 9221-8chn AI voltage). The
> controller communicates with a Dell PC running LabVIEW over a dedicated
> ethernet. At this time, despite numerous reset's and a power cycle, the PC is
> unable to establish a connection to the controller and the controller status
> light is periodically pulsing. The post-doc has moved on and our group lacks
> the expertise to proceed. Help from a knowledgeable technician would be
> greatly appreciated.
>
> Yours,
> Michael Lowry, Research Scientist
> x7432, <a class="moz-txt-link-abbreviated" href="mailto:mlowry@jlab.org">mlowry@jlab.org</a>
</pre>
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