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["Videbaek, Christian" <cvidebaek AT bnl.gov>]

I don't think there is any risk of damage.

The cooler interlock is only enabled if the temperature/humidity readings from the controller are ok.

None of those paths run through the affected  ethernet converter.

You don't have detailed monitoring of the controller, and cannot change the settings remotely, but it still works (as I understand it).

Just to be sure: Has anyone applied any sort of interlock bypass?

If so we should shut down and not run until the bypass is removed and ethernet converter replaced.

Christian

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From: Visser, Gerard <gvisser AT indiana.edu>
Sent: Wednesday, April 26, 2023 2:57 PM
To: Te-Chuan Huang <tchuang AT rcf.rhic.bnl.gov>; Videbaek, Christian <cvidebaek AT bnl.gov>
Cc: star-fst-l AT lists.bnl.gov <star-fst-l AT lists.bnl.gov>
Subject: Re: [Star-fst-l] FST/IST cooler IOC

 

The FST power is supposed to be interlocked to the cooling system, as it was for the IST. But, I don't really know if it actually is or not, that part wasn't my responsibility.

It's a bit late to make such a change but if there is an actual risk of damaging something if the frontend is powered when the cooling is off, then it ought to be interlocked. I also don't know how real the risk of this is, and I suspect it's not too real a risk.

     Gerard

---

From: Star-fst-l <star-fst-l-bounces AT lists.bnl.gov> on behalf of Te-Chuan Huang <tchuang AT rcf.rhic.bnl.gov>
Sent: Wednesday, April 26, 2023 2:52 PM
To: Videbaek, Christian <cvidebaek AT bnl.gov>
Cc: star-fst-l AT lists.bnl.gov <star-fst-l AT lists.bnl.gov>
Subject: Re: [Star-fst-l] FST/IST cooler IOC

 

Hi Christian,

Thanks a lot.

Please let me know when is the replacement available and when are you planning to install it.

I am now keep the cooling system running just in case there is someone turn on the FST accidentally.

I will need to shutdown the cooling system before doing anything on it.

Cheers,

Te-Chuan

On Apr 25, 2023, at 1:06 PM, Videbaek, Christian <cvidebaek AT bnl.gov> wrote:

Hi Te-Chuan,

 

I thought it was odd that the spare would be powered.

The device Tim mentioned is probably a Moxa N5100A or N5150; we used something similar for the STGC gas system not long ago.

The are available and not too expensive, so we should have an alternate soon.

 

Christian

 

From: Te-Chuan Huang <tchuang AT rcf.rhic.bnl.gov> 
Sent: Tuesday, April 25, 2023 11:06 AM
To: Videbaek, Christian <cvidebaek AT bnl.gov>
Cc: star-fst-l AT lists.bnl.gov
Subject: Re: [Star-fst-l] FST/IST cooler IOC

 

Hi All,

 

I was wrong.

I found some documents for IST cooling system in the FST cabinet.

Indeed, It shows we have 2 converters but one is used for TC-48-20 and one for HX86PA.

They are both in use, so we can not just simply swap the cables.

We do need to find a replacement for it.

 

Cheers,

Te-Chuan

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On Apr 24, 2023, at 8:22 PM, Te-Chuan Huang <tchuang AT rcf.rhic.bnl.gov> wrote:

 

Hi Christian,

 

Thanks for the reply.

FST cooling is currently running fine. Just some temperature values are not monitored (alarms for shift crews may not work properly), so need extra eyes on it.

I’m thinking that there are 2 set of TC-48 modules, OMEGA units and so on in the rack.

But, we actually only need one set of them.

Is it possible that we swap the cables and make the current TC-48 module in use work?

I’m probably wrong, so please correct me.

PS. Please ignore my previous email if you received it. I was sending with a wrong email account.

 

Thanks,

Te-Chuan

On Apr 24, 2023, at 7:42 PM, Videbaek, Christian <cvidebaek AT bnl.gov> wrote:

 

Hi All,

 

It looks like the RS-232/485 to Ethernet converter is dead.

Additionally, the controller has been discontinued by the manufacturer (note: site may not work properly on BNL networks):

https://in.omega.com/pptst/EIT-W.html

 

Tim knows of a replacement part that should work as a replacement.

He will order it if we don't have one on hand.

I'm not sure of the configuration of the failed converter, or even if it needed to be configured, so there may be some software work needed to get the replacement running.

 

Will we be able to run the FST if the alternate unit needs to be ordered?

 

Thanks,

Christian

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