[Dsg-hallb_magnets] request to stop Torus LV cRIO for debugging on morning of 2016-01-04

Wed Jan 4 17:57:55 EST 2017

That's exactly where the error is from (interlocked from a previous bad value).

See attached MyaViewer plot. I'm pretty sure a LC shouldn't be reading 2 million pounds, but since the value is reading correctly now it will be something to keep an eye on.

----- Original Message -----
> From: "Dave Kashy" <kashy at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>, "Denny Insley" <dinsley at jlab.org>
> Sent: Wednesday, January 4, 2017 5:31:33 PM
> Subject: Re: [Dsg-hallb_magnets] request to stop Torus LV cRIO for debugging on morning of 2016-01-04

> CCM B load cell B1 is has an error displayed in the furthest right column.
> The present value is fine. I'm not sure if the Error is just locked in from a
> noise spike or something else.
> 
> 
> ----- Original Message -----
> From: "Tyler Lemon" <tlemon at jlab.org>
> To: "kashy" <kashy at jlab.org>, "dsg-hallb magnets" <dsg-hallb_magnets at jlab.org>,
> "Denny Insley" <dinsley at jlab.org>
> Sent: Wednesday, January 4, 2017 4:34:56 PM
> Subject: Re: [Dsg-hallb_magnets] request to stop Torus LV cRIO for debugging on
> morning of 2016-01-04
> 
> Hello Ruben and Dave,
> 
> Debugging of the Torus LV cRIO was successful and Brian's changes from November
> 2016 have been implemented. All sensors appear to be behaving the same as
> before the debugging, but please let me know if there are any errors in the
> sensor data so the changes can be reverted.
> 
> Torus LV cRIO is now back running for normal operation.
> 
> Best regards,
> Tyler
> 
> 
> 
> 
> 
> From: "Ruben Fair" <rfair at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "David Kashy" <kashy at jlab.org>, "dsg-hallb magnets"
> <dsg-hallb_magnets at jlab.org>, "Denny Insley" <dinsley at jlab.org>
> Sent: Wednesday, January 4, 2017 3:17:27 PM
> Subject: Re: [Dsg-hallb_magnets] request to stop Torus LV cRIO for debugging on
> morning of 2016-01-04
> 
> ok thanks
> 
> Ruben
> 
> 
> 
> From: "Tyler Lemon" <tlemon at jlab.org>
> To: "David Kashy" <kashy at jlab.org>, "dsg-hallb magnets"
> <dsg-hallb_magnets at jlab.org>, "Denny Insley" <dinsley at jlab.org>
> Sent: Wednesday, January 4, 2017 3:16:44 PM
> Subject: Re: [Dsg-hallb_magnets] request to stop Torus LV cRIO for debugging on
> morning of 2016-01-04
> 
> Hello Ruben and Dave,
> 
> I am starting the debugging of the Torus LV cRIO now. A logbook entry will be
> made with the status of the cRIO and any notes from the debugging.
> 
> Best regards,
> Tyler
> 
> 
> From: "Ruben Fair" <rfair at jlab.org>
> To: "Tyler Lemon" <tlemon at jlab.org>
> Cc: "Dave Kashy" <kashy at jlab.org>, "dsg-hallb magnets"
> <dsg-hallb_magnets at jlab.org>, "Denny Insley" <dinsley at jlab.org>
> Sent: Wednesday, January 4, 2017 11:30:40 AM
> Subject: Re: [Dsg-hallb_magnets] request to stop Torus LV cRIO for debugging on
> morning of 2016-01-04
> 
> Thank you Tyler
> 
> Ruben
> 
> On Jan 4, 2017, at 11:27 AM, Tyler Lemon < tlemon at jlab.org > wrote:
> 
> 
> 
> 
> Hello Dave,
> 
> There does not appear to be any overlap in the sensors you listed for the cryo
> control loop and the instrumentation list for sensors in the LV Chassis. The
> cryogenic flows should not be impacted.
> 
> The debug of the Torus LV cRIO code should take a few hours and can start at
> 3:30PM today. I will post the status of the debugging in the HBTORUS logbook.
> 
> The current, working code that is presently running on the cRIO will be
> redeployed at the end of the day if the solution to the nonsense Load Cell
> values is not found by then.
> 
> Best regards,
> Tyler
> 
> 
> From: "Dave Kashy" < kashy at jlab.org >
> To: "Tyler Lemon" < tlemon at jlab.org >
> Cc: "dsg-hallb magnets" < dsg-hallb_magnets at jlab.org >, "Denny Insley" <
> dinsley at jlab.org >
> Sent: Wednesday, January 4, 2017 9:48:15 AM
> Subject: Re: request to stop Torus LV cRIO for debugging on morning of
> 2016-01-04
> 
> Tyler,
> I mis-understood your previous message.
> "Can the Torus LV cRIO be taken offline tomorrow morning for a few hours to
> debug bad Load Cell readings?"
> 
> I thought we currently are having bad readings not that all load cells read
> erroneously at the time you showed in your plots which then recovered.
> (software/cRIO...)
> 
> Cryo control input parameters are presently limited to:
> 
> Nitrogen Liquid level in the TST. LL8152CP and TP8151
> 
> Flow through the helium circuit. FI8561 and LL8554CP
> 
> We are also controling some DBX functions on
> PT8554
> LL8554CP
> PT8565
> 
> Thanks
> Dave
> 
> 
> 
> ----- Original Message -----
> From: "Tyler Lemon" < tlemon at jlab.org >
> To: "kashy" < kashy at jlab.org >, "dsg-hallb magnets" < dsg-hallb_magnets at jlab.org
> >, "Denny Insley" < dinsley at jlab.org >
> Sent: Wednesday, January 4, 2017 8:58:02 AM
> Subject: Re: request to stop Torus LV cRIO for debugging on morning of
> 2016-01-04
> 
> Hello Dave,
> 
> All Load Cells were reading improperly after the last attempted update. Attached
> are EPICS Archive plots from November 11, 2016 showing the Load Cell values
> jumping to over 2x10^6 lbs.
> 
> The LV cRIO also reads Cernox sensor and PT100 data. Looking at the EPICS
> Archive plots for the same time as the attached plots, all other sensors in the
> LV Chassis were not affected. However, there is a chance that the signals from
> the other sensors may be briefly interrupted while debugging code is deployed
> to the cRIO. Would you know what temperature sensors are used for the cryogenic
> flow control loops?
> 
> Best regards,
> Tyler
> 
> 
> From: "Dave Kashy" < kashy at jlab.org >
> To: "Tyler Lemon" < tlemon at jlab.org >
> Cc: "dsg-hallb magnets" < dsg-hallb_magnets at jlab.org >, "Denny Insley" <
> dinsley at jlab.org >
> Sent: Wednesday, January 4, 2017 8:00:12 AM
> Subject: Re: request to stop Torus LV cRIO for debugging on morning of
> 2016-01-04
> 
> Hi Tyler,
> Which load cells are reading improperly?
> I looked through them this moring and time histories over the last 5 weeks and
> see nothing wrong.
> I don't have a problem with you taking down the system as long as the cryogenic
> flows are not impacted.
> None of the control loops use any force or strain readings.
> 
> Dave
> 
> 
> 
> ----- Original Message -----
> From: "Tyler Lemon" < tlemon at jlab.org >
> To: "dsg-hallb magnets" < dsg-hallb_magnets at jlab.org >, "kashy" < kashy at jlab.org
> >
> Sent: Tuesday, January 3, 2017 4:39:02 PM
> Subject: request to stop Torus LV cRIO for debugging on morning of 2016-01-04
> 
> Hello Dave Kashy,
> 
> Can the Torus LV cRIO be taken offline tomorrow morning for a few hours to debug
> bad Load Cell readings?
> 
> The debugging would be to find the cause of the bad Load Cell Values that
> occurred after Brian Eng made changes to the LV cRIO in November 2016 (HBTORUS
> Logbook entry #3438123).
> 
> Today, at about 2:00PM, Ruben gave his okay and requested you to also approve
> the cRIO downtime. Please let me know if there are any tests occurring tomorrow
> morning where the Torus LV cRIO should not be stopped.
> 
> Best regards,
> Tyler
> 
> 
> From: "Ruben Fair" < rfair at jlab.org >
> To: "Tyler Lemon" < tlemon at jlab.org >
> Cc: "David Kashy" < kashy at jlab.org >
> Sent: Tuesday, January 3, 2017 1:49:57 PM
> Subject: Re: [Dsg-hallb_magnets] request to stop Torus LV cRIO for debugging
> 
> Hi Tyler,
> 
> Yes - most probably but please check with Dave Kashy first.
> 
> Ruben
> 
> 
> From: "Tyler Lemon" < tlemon at jlab.org >
> To: "dsg-hallb magnets" < dsg-hallb_magnets at jlab.org >
> Sent: Tuesday, January 3, 2017 1:48:14 PM
> Subject: [Dsg-hallb_magnets] request to stop Torus LV cRIO for debugging
> 
> Hello Ruben,
> 
> In November, Brian made changes to the Torus LV cRIO that had to be rolled back
> because of issues with nonsense Load Cell readings. These issues were noted in
> HBTORUS Logbook entry # 3438123.
> 
> Can the Torus LV cRIO be taken offline this afternoon for a few hours to debug
> the bad Load Cell readings?
> 
> Best regards,
> Tyler
> 
> 
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> 
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