[Hallb-solenoid] Tested Danfysik Quench Detection Units Reset

[Nicholas Sandoval]

Hi Pablo,

As the hardware quench detectors are tuned and tested in  B000000401-P026 at no point in P027 do you need to clear these.

So yes you do need to have the ability to reset all interlocks tested in document B000000401-P027 from EPICs.  If for some reason that was not the case you should detail which interlock check did not allow you to reset from EPICs so that the appropriate changes can be made.  

Thanks,

Nick



----- Original Message -----
From: "Ruben Fair" <rfair at jlab.org>
To: "Pablo Campero Rojas" <campero at jlab.org>
Cc: "hallb-solenoid" <hallb-solenoid at jlab.org>, "Cesar Luongo" <luongo at jlab.org>
Sent: Tuesday, October 11, 2016 10:01:06 AM
Subject: Re: [Hallb-solenoid] Tested Danfysik Quench Detection Units Reset

Thank you Pablo and Tyler. 

Yes - we have agreed that if we have a QD hard-wire trip - we will need to investigate and therefore it would not be correct to reset via EPICS. 

We shall remove it from the checklist. 

Regards 

Ruben 



From: "Pablo Campero Rojas" <campero at jlab.org> 
To: "Ruben Fair" <rfair at jlab.org> 
Cc: "hallb-solenoid" <hallb-solenoid at jlab.org> 
Sent: Tuesday, October 11, 2016 9:58:49 AM 
Subject: Tested Danfysik Quench Detection Units Reset 



Hello Ruben, 



Yesterday; Brian, Tyler and I worked on testing the reset interlocks button (EPICS). We realized that it does not work to make the reset in REMOTE mode for the three Quench Detection Units, since this reset has to do with a setting on the control board. The control board faults configuration needs "RS & F" commands to fully clear remotely. At the moment the reset for them can be made only manually in LOCAL mode on the control board of the MPS. Brian thinks that this might be for safety reasons. 

So EPICS reset for quench detection interlocks should not have been in the checklist. 



Best Regards 

Pablo Campero 


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