[Dsg-hallb_magnets] Readout of the status of the Guard Vacuum Pump

Fri Apr 21 13:33:32 EDT 2017

Hello Ruben, 

I think that, using the 1756-HSC module could be one way to read the (RPM) status of the guard Vacuum pump, but also I can propose use a Signal Conditioner (931S-F1C2D-DC) which has a input frequency of 100 kHz (See attached manual-page 33) and converts the frequency into (0-20/4-20 mA) analog signal. So in that sense we can use one of the spare channels of the Analog module (1756-IF16) that we already have installed in the Solenoid Local chassis . 
Both solution can work. I would like to check the pulse train signal output this afternoon. 

Best Regards 
Pablo 

From: "Ruben Fair" <rfair at jlab.org> 
To: "Nicholas Sandoval" <sandoval at jlab.org>, campero at jlab.org 
Cc: "Scot Spiegel" <spiegel at jlab.org> 
Sent: Friday, April 21, 2017 8:36:45 AM 
Subject: Re: Readout of the status of the Guard Vacuum Pump 

Pablo 

Please get involved with this and work with Scot and Nick to see if you guys can come up with an acceptable solution. 

Regards 

Ruben 

> On Apr 21, 2017, at 8:02 AM, Nicholas Sandoval <sandoval at jlab.org> wrote: 
> 
> Hi Scot, 
> 
> I would look into 1756-HSC if you want to keep it on the PLC chassis. We have same module in Hall-D except it is for a different architecture, 1769. If you would like to try a test run I do have a developmental 1769 chassis with 1769-HSC module installed that can be lended out. 
> 
> Frequency mode description starts at pg 29 of attached manual 
> 
> Best REgards, 
> 
> Nick 
> 
> 
> 
> 
> ----- Original Message ----- 
> From: "Scot Spiegel" <spiegel at jlab.org> 
> To: "Nicholas Sandoval" <sandoval at jlab.org> 
> Cc: "Ruben Fair" <rfair at jlab.org>, "George Biallas" <biallas at jlab.org> 
> Sent: Friday, April 21, 2017 7:10:45 AM 
> Subject: Re: Readout of the status of the Guard Vacuum Pump 
> 
> Nick, 
> 
> Did you say you may have a converter for Hall Sensor pulse train output? 
> 
> Please let me know a.s.a.p. if you can help with some hardware. Otherwise I'll look for a compatible device... 
> 
> Thanks, 
> 
> Scot Spiegel 
> Sr. Technologist / Designer 
> Physics / Hall D 
> JSA Jefferson Lab 
> 12000 Jefferson Ave. 
> Bldg. 55 Rm. 1546-24 
> Newport News, VA. 23606 
> Ph. 757-536-5900 
> Wk. 757-269-5900 
> 
> 
> From: "Ruben Fair" <rfair at jlab.org> 
> To: "Scot Spiegel" <spiegel at jlab.org> 
> Cc: "George Biallas" <biallas at jlab.org>, "Pablo Campero" <campero at jlab.org>, "Joseph Matalevich" <josephm at jlab.org>, "Renuka Rajput-Ghoshal" <renuka at jlab.org> 
> Sent: Thursday, April 20, 2017 3:05:44 PM 
> Subject: Re: Readout of the status of the Guard Vacuum Pump 
> 
> Thanks Scot. 
> 
> As discussed we will have to get a pulse-train converter that converts the pulse frequency to a proportional voltage output that we can then feed into the PLC. 
> 
> Regards 
> 
> Ruben 
> 
> 
> 
> From: "Scot Spiegel" <spiegel at jlab.org> 
> To: "George Biallas" <biallas at jlab.org>, "Ruben Fair" <rfair at jlab.org> 
> Cc: "Pablo Campero Rojas" <campero at jlab.org>, "Joseph Matalevich" <josephm at jlab.org>, "Renuka Rajput-Ghoshal" <renuka at jlab.org> 
> Sent: Thursday, April 20, 2017 2:43:39 PM 
> Subject: Re: Readout of the status of the Guard Vacuum Pump 
> 
> Gents, 
> 
> I've powered and adjusted the "NMax" & "Speed" of the MOOG Controller for the Guard Vacuum Pump. The output for the pump speed is a constant 3.069 VDC over the full range of RPMs. 
> 
> Best regards, 
> 
> Scot Spiegel 
> Sr. Technologist / Designer 
> Physics / Hall D 
> JSA Jefferson Lab 
> 12000 Jefferson Ave. 
> Bldg. 55 Rm. 1546-24 
> Newport News, VA. 23606 
> Ph. 757-536-5900 
> Wk. 757-269-5900 
> 
> 
> From: "George Biallas" <biallas at jlab.org> 
> To: "Scot Spiegel" <spiegel at jlab.org>, "Renuka Rajput-Ghoshal" <renuka at jlab.org>, "Pablo Campero" <campero at jlab.org> 
> Cc: "Joseph Matalevich" <josephm at jlab.org>, "Ruben Fair" <rfair at jlab.org> 
> Sent: Tuesday, April 18, 2017 4:56:26 PM 
> Subject: Readout of the status of the guard vacuum pump 
> 
> Folks, 
> Joseph Matalevich asks for a new readout. He requests the status of the guard vacuum pump as given by the MOOG motor controller signal contacts +#5 and -#1 on page 3 and on 9 of the Data Sheet I enclose on the Air Squared Pump and its controller. 
> 
> Is there a spare module on the PLC for this? 
> 
> He is also not aware of where the Guard Vacuum pressure (vacuum) signal is displayed in the control system. 
> He requests that both the pressure and the pump status be displayed on the Cryo Page. 
> 
> We need a new shielded pair to be added from PLC to the vacuum shelf area for this signal. 
> Let's add it to the vacuum signal festoon. 
> 
> 
> 
> -- 
> George H. Biallas P.E. 
> Suite 402 
> Jefferson Lab 
> 12050 Jefferson Ave. 
> Newport News VA 23606 
> Work: 757 269 7535, 
> Page: 757 584 7535 
> Cell: 757 813 1179 
> Home: 757 877 1267 
> <1756-um007_-en-p.pdf> 
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