[dsg-hdice] 30 V supply

[Tyler Lemon]

Hello Xiangdong,

Pablo and I took a look at the IGH where the 30 V supply needs to go.

It seems that the best way to install it is to remove the 24 V supply and install the 30 V supply using a rail mounted on the side of the IGH. The rail could be a DIN rail (in which case we'd also need a way to fasten a DIN connector to the 30 V power supply) or a plain, flat metal bar (in which case, we'd use screws to attach the 30 V power supply to the rail).

While we were over in the HDice lab and since everything was off, we removed the 24 V supply from the DIN rail and also the DIN rail to see if that rail could be used, but it is too short. We left the DIN rail removed from the IGH with the 24 V power supply sitting on the bottom of the crate with everything still wired.

Would HDice have either a 19-inch long DIN rail or 19-inch long x 1.5-inch wide flat metal bar that can be used? Should we go ahead and buy either if there are not any on hand?

Best regards,
Tyler
________________________________
From: dsg-hdice <dsg-hdice-bounces at jlab.org> on behalf of Amrit Yegneswaran
Sent: Wednesday, July 3, 2019 5:50 PM
To: Xiangdong Wei; Peter Bonneau; dsg-hdice at jlab.org
Subject: Re: [dsg-hdice] 30 V supply

just saw your e-mail.
peter is off till monay.

mindy had attached the power cord.
if it hasn't been already installed, tyler and pablo will do this on friday 5th july.

have a nice 4th
amrit


________________________________
From: dsg-hdice <dsg-hdice-bounces at jlab.org> on behalf of Xiangdong Wei
Sent: Wednesday, July 3, 2019 11:11 AM
To: Peter Bonneau; dsg-hdice at jlab.org
Subject: Re: [dsg-hdice] 30 V supply

Good morning Peter,

Could you please let me know when the new 30V power supply will be installed on the IGH? We are now prep the dilution refrigerator for the coming run, and need to use IGH to control the fridge.

Thanks,

Xiangdong
________________________________
From: dsg-hdice <dsg-hdice-bounces at jlab.org> on behalf of Peter Bonneau
Sent: Monday, June 24, 2019 3:01:26 PM
To: dsg-hdice at jlab.org
Subject: Re: [dsg-hdice] 30 V supply

Xiangdong,

If you're back from vacation, we have the 30 VDC supply that you've ordered.
We can meet if you want to discuss the next steps with this supply.

Our next scheduled meeting is July 18th since next Thursday is the July 4th holiday.

Peter
________________________________
From: dsg-hdice <dsg-hdice-bounces at jlab.org> on behalf of Brian Eng
Sent: Monday, June 17, 2019 5:26 PM
To: Charles Hanretty
Cc: dsg-hdice at jlab.org
Subject: Re: [dsg-hdice] 30 V supply

Andy,

Just to keep everyone in the loop we checked the power supply voltages, everything looked okay.

The stepper motor that drives the proportional valve was spinning as well.

We'll have to wait until Wei returns to do anything else since I'm not really sure what he wanted to do with the 30 VDC supply as nothing in the schematics calls for that voltage.

> On Jun 17, 2019, at 3:15 PM, Charles Hanretty <charleshanretty at gmail.com> wrote:
>
> Brian,
>     Before he went on vacation, Wei requested that I ask you to measure the voltage going to a proportional valve prior to the installation of this power supply. He'd like to see if it matches your previous measurements (taken before the installation of the other new power supply). If you're not sure which valve this is, I can show you.
>
> On Mon, Jun 17, 2019 at 3:05 PM Brian Eng <beng at jlab.org> wrote:
> Hi Andy,
>
> Peter will be looking into it, but I'll come by your office to get the supply today if that's okay?
>
> > On Jun 17, 2019, at 2:34 PM, Andy Sandorfi <sandorfi at jlab.org> wrote:
> >
> > Hi Brian,
> >
> > Xiangdong Wei is on vacation. Before he left he ordered a 30 V DC supply for our Oxford IGH. With Amanda gone, I’m not sure who is looking into this. Can you tell the relevant person that the supply is in my office?
> > Thanks,…Andy
>


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