[Dsg-hallb_magnets] Readout of the status of the guard vacuum pump

[Pablo Campero]

Hello Ruben, 



See my answers in blue: 





1. I understand from Renuka that PT8677 is already being monitored by the PLC - is this correct? 




Yes, the readout signal for the PT8677 (Guard Vacuum) pressure is already monitored by the PLC and also appears in the Solenoid wiring drawing B00000-900-0626. 


2. Which screen is PT8677 presently being displayed on? We will need it displayed on the Cryo screen. 




The PT8677 is currently displayed on the EPICS Helium-SST screen. 


3. We will also need an 'indicator' located next to the PT8677 to provide 'pump motor status' 



I shall look through the information George has sent round to determine what form this status will take and will let you know. 



Is there a spare PLC channel to allow inclusion of this status? 



I already looked into the information sent by George Biallas and I cannot found any useful information to determinate the type of the output signals of the guard vacuum pump controller (MOOG- BDO-Q2-50-40). To my understanding typically these outputs signals: S1 (Hall Switch #1) and GND (GND for hall sensors #9) used to be aware of the status of the guard pump; gives pulse train signals (Discrete Signals), but there is nothing in the manual to confirm that. 


So maybe I can contact to the vendor of the controller and confirm this aspect, and then I can determinate if we have any spare available in the PLC input modules to be used to monitor this signal. 



Best Regard 

Pablo 

From: "Ruben Fair" <rfair at jlab.org> 
To: "George Biallas" <biallas at jlab.org> 
Cc: "Scot Spiegel" <spiegel at jlab.org>, "Renuka Rajput-Ghoshal" <renuka at jlab.org>, "Pablo Campero Rojas" <campero at jlab.org>, "Joseph Matalevich" <josephm at jlab.org>, "Wesley Moore" <wmoore at jlab.org> 
Sent: Wednesday, April 19, 2017 10:44:25 AM 
Subject: Re: Readout of the status of the guard vacuum pump 

Pablo, 

Can you give me the following information: 

1. I understand from Renuka that PT8677 is already being monitored by the PLC - is this correct? 

2. Which screen is PT8677 presently being displayed on? We will need it displayed on the Cryo screen. 

3. We will also need an 'indicator' located next to the PT8677 to provide 'pump motor status' 
I shall look through the information George has sent round to determine what form this status will take and will let you know. 
Is there a spare PLC channel to allow inclusion of this status? 



Regards 

Ruben 



From: "Ruben Fair" <rfair at jlab.org> 
To: "George Biallas" <biallas at jlab.org> 
Cc: "Scot Spiegel" <spiegel at jlab.org>, "Renuka Rajput-Ghoshal" <renuka at jlab.org>, "Pablo Campero Rojas" <campero at jlab.org>, "Joseph Matalevich" <josephm at jlab.org>, lester at jlab.org, "Ernest Stallworth" <stallwor at jlab.org>, "wmoore" <wmoore at jlab.org> 
Sent: Tuesday, April 18, 2017 6:57:07 PM 
Subject: Re: Readout of the status of the guard vacuum pump 

Scot 

Could you please work with Mark to get the relevant cables made? 

Pablo 

Can you implement this in the PLC and work with Wesley to get the EPICS screen updated? Also remember to update the relevant spreadsheets and then work with Renuka to get the docs updated. 

Also speak to Joe Matalevich to see what alarms and/or controls he needs setting up. 

Regards 

Ruben 


> On Apr 18, 2017, at 4:56 PM, George Biallas <biallas at jlab.org> wrote: 
> 
> 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 
> <Air Squared v12h020a-bldc-c Scroll Vacuum Pump Dat Sheet .pdf> 

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