[Dsg-ltcc] LTCC Solenoid Control

[Marc McMullen]

Hi Bob,

We discussed the solenoid controls in our status meeting today and 
decided that the best option would be to use the existing solenoids, but 
change the coils to the low current 120VAC coils. We have also consulted 
with Todd Kujawa to ensure cabling will be up to code.

The change will require a new chassis to distribute 120VAC supplied by 
the UPS. We are procuring the components for this new chassis. Once the 
chassis is complete and the 120V coils arrive, they can be installed 
during an opening.

In the interim, we are modifying a relay chassis from the CLAS6 Hardware 
Monitoring System. This chassis can be used to actuate the currently 
installed 24VAC solenoid coils during standard operating pressures from 
the controls software, just in case the C4F10 arrives before the new 
equipment is installed.

I have attached a flow diagram, which I have extracted the controls 
portion of your fault scheme. The logic for the control of the solenoids 
and pumps will be programmed using this flow chart. Please review and 
respond with any corrections needed.

Regards,

-- 
Marc McMullen
Detector Support Group
757-269-7738

-------------- next part --------------
A non-text attachment was scrubbed...
Name: LTCC Solenoid Logic Flow Chart.pptx
Type: application/vnd.openxmlformats-officedocument.presentationml.presentation
Size: 37444 bytes
Desc: not available
URL: <https://mailman.jlab.org/pipermail/dsg-ltcc/attachments/20181107/0ebc98da/attachment-0001.pptx>