[labnetwork] Savannah ALD GUI crash - empties the N2 cylinder

[Hathaway, Malcolm R]

Hi Youry,

I have not come across that particular issue so far.  Typically, when the GUI freezes (USB errors in our case) my sense has been that everything stops in a "fail-safe" mode, i.e. heaters off, and everything else with them.

I have been dealing with a fault in our controller lately, wherein the MFC circuit does not enter "bypass" when venting, instead shutting off, and preventing venting.  This is a different issue, however, in that it is hardware related.  Yours sounds like it's control signal-related.  Perhaps a soft-ware reload?  Or update?  Which rev. of Savannah software do you have?


Mac
Harvard CNS
________________________________
From: labnetwork-bounces at mtl.mit.edu <labnetwork-bounces at mtl.mit.edu> on behalf of Youry Borisenkov <yb2471 at columbia.edu>
Sent: Monday, January 27, 2020 4:13 PM
To: labnetwork at mtl.mit.edu <labnetwork at mtl.mit.edu>
Subject: [labnetwork] Savannah ALD GUI crash - empties the N2 cylinder

Dear All,
We are experiencing a strange fault with our savannah ALD.
It was hard to catch but, when the Lab View GUI crashes or friezes (this happens every once in a while and the system is in Idle mode), it just sets the Nitrogen purge MFC to the max open position and empties the N2 cylinder unless we are fast to respond.
Did any of you had such a problem? If so, what was the solution?

--
Thanks and Best Regards,
Youry Borisenkov
Cleanroom Process Engineer
Columbia University
530 W 120th Street Room 1017
New York, NY 10027
Columbia Nano Initiative | Cleanroom<https://urldefense.proofpoint.com/v2/url?u=http-3A__cni.columbia.edu_columbia-2Duniversity-2Dclean-2Droom&d=DwMFaQ&c=WO-RGvefibhHBZq3fL85hQ&r=TEMLD8-VsxCGtcVzmvpT5GFNSczskEKHzW6aYlttmIY&m=m_0M5aEvuhPmDFEcFpwAUsH1CTe4zveQpyoppGDAcz4&s=RK1NDmOxYEyXG2eybL2Qpk2_W_6lMNLAqNPOt3ieCSM&e=>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mtl.mit.edu/pipermail/labnetwork/attachments/20200128/71879810/attachment.html>