[Dsg-hallb_magnets] Hall B Magnet PID

[Brian Eng]

Attached is a PDF describing the logic on the various PLCs behind the interlock indicator on the EPICS CSS screen.

Let me know if there's any other questions.
________________________________
From: David Kashy <kashy at jlab.org>
Sent: Thursday, November 21, 2024 6:23 AM
To: Brian Eng <beng at jlab.org>; Sandesh Gopinath <gopinath at jlab.org>; Probir Ghoshal <ghoshal at jlab.org>; Denny Insley <dinsley at jlab.org>
Cc: Dontre Tucker <tucker at jlab.org>; Morgan Cook IV <mcookiv at jlab.org>; Nathan Baltzell <baltzell at jlab.org>
Subject: Re: Hall B Magnet PID

Hi Brian,
Please do dig and then transfer to whomever can edit the gui to add the info!

Thanks
Dave
________________________________
From: Brian Eng <beng at jlab.org>
Sent: Wednesday, November 20, 2024 5:41 PM
To: David Kashy <kashy at jlab.org>; Sandesh Gopinath <gopinath at jlab.org>; Probir Ghoshal <ghoshal at jlab.org>; Denny Insley <dinsley at jlab.org>
Cc: Dontre Tucker <tucker at jlab.org>; Morgan Cook IV <mcookiv at jlab.org>; Nathan Baltzell <baltzell at jlab.org>
Subject: Re: Hall B Magnet PID

In my (admittedly quick) look around the PLC code of the distribution box none of the conditions are being triggered. There are 3 tags that can trigger an interlock: a DT from the torus, a DT from the solenoid and LL from the torus.

I'd have to dig into the code some more to figure out the exact logic behind each of those. Let me know if you still need that.

I can say that right now PV8563C is in normal mode and being controlled by TD8513S and PV8563W in normal mode controlled by PT8563.

________________________________
From: David Kashy <kashy at jlab.org>
Sent: Wednesday, November 20, 2024 4:27 PM
To: Brian Eng <beng at jlab.org>; Sandesh Gopinath <gopinath at jlab.org>; Probir Ghoshal <ghoshal at jlab.org>; Denny Insley <dinsley at jlab.org>
Cc: Dontre Tucker <tucker at jlab.org>; Morgan Cook IV <mcookiv at jlab.org>; Nathan Baltzell <baltzell at jlab.org>
Subject: Re: Hall B Magnet PID

Hi Brian,
We would like to have more information about about the interlocks on the Cooldown/Warmup valves PV8563C and PV8563W.
And if possible put that info on the GUI

I recall one may be absolute value in DT and one maybe not for Torus vs Solenoid...

If you need more info we can talk.

Thanks
Dave
________________________________
From: Brian Eng <beng at jlab.org>
Sent: Wednesday, November 20, 2024 3:18 PM
To: David Kashy <kashy at jlab.org>; Sandesh Gopinath <gopinath at jlab.org>; Probir Ghoshal <ghoshal at jlab.org>; Denny Insley <dinsley at jlab.org>
Cc: Dontre Tucker <tucker at jlab.org>
Subject: Hall B Magnet PID

Hi Dave,

When I was leaving the hall this afternoon to go to a meeting Dontre mentioned that there might be some issues with the PID, have these been worked out or is there still something I should look into?

Thanks
Brian
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