LBT Q1 2009 Eng/SW Review HBSC Hydrostatic Bearing System Sargent/Howard.

LBT Q1 2009 Eng/SW LBT Q1 2009 Eng/SW ReviewReview

HBSCHBSC

Hydrostatic Bearing SystemHydrostatic Bearing System

Sargent/HowardSargent/Howard

6-Apr-20096-Apr-2009 LBT Q1 2009 Eng/SW ReviewLBT Q1 2009 Eng/SW Review

Highlights (Q1/2009)Highlights (Q1/2009) James Howard taking over for Jonathan Kern on HBSJames Howard taking over for Jonathan Kern on HBS


Open IssuesOpen Issues TechnicalTechnical

PLC Control law remains unknown, but PLC Control law remains unknown, but documentation is availabledocumentation is available

Capillaries installed Capillaries installed ScheduleSchedule

NoneNone FinancialFinancial

NoneNone ResourceResource

Mountain and Tucson support pacing operationMountain and Tucson support pacing operation


Progress (Q1/2009)Progress (Q1/2009)

From last review:From last review: Continue Installation El capillaries at the pads (next week)Continue Installation El capillaries at the pads (next week) Describe new control laws correcting:Describe new control laws correcting:

pressure OKpressure OK system shutdown when pocket pressures failsystem shutdown when pocket pressures fail control around pressure, not lookup table (LBT)control around pressure, not lookup table (LBT)

Rewrite PLC code using new control laws (VoltsDC)Rewrite PLC code using new control laws (VoltsDC) MCSPU software revisions:MCSPU software revisions:

Use new CTI PLCIO_rev-4 to communicate with Siemens HPLCUse new CTI PLCIO_rev-4 to communicate with Siemens HPLC Display detailed HBS status in Eng. Interface display pageDisplay detailed HBS status in Eng. Interface display page Add telemetry of HBS tags to MCSPU for diagnostic purposes.Add telemetry of HBS tags to MCSPU for diagnostic purposes. Modify HBS Control/monitor State machine to use newly available tagsModify HBS Control/monitor State machine to use newly available tags Expand and Amend HBS Command set as needed (Q4 ?)Expand and Amend HBS Command set as needed (Q4 ?)

MCS needs to copy HBS status info into shared memory for rest of TCS. MCS needs to copy HBS status info into shared memory for rest of TCS. Add HBS information and commands to MCS GUIAdd HBS information and commands to MCS GUI

More ProgressMore Progress MCSPU is now communicating with the HBS Siemens PLC over ethernet. MCSPU is now communicating with the HBS Siemens PLC over ethernet.

There are some occasional problems with that and code has been put in There are some occasional problems with that and code has been put in the latest rev. of MCSPU to attempt to diagnose and to re-initialize the the latest rev. of MCSPU to attempt to diagnose and to re-initialize the connection in the event of a comm. failure. connection in the event of a comm. failure.

The Engineering Interface now has 4 new HBS display pages. The Engineering Interface now has 4 new HBS display pages. Work on an HBS GUI as part of the MCS GUI has begun. Work on an HBS GUI as part of the MCS GUI has begun. VoltsDC got WinCC to display temperatures correctly, but that broke the VoltsDC got WinCC to display temperatures correctly, but that broke the

ability to force values, so work continuesability to force values, so work continues Conceptual design for a variable capillary is being turned into a Conceptual design for a variable capillary is being turned into a

prototype, for testing next week.prototype, for testing next week. Oil temperature – we are starting to understand what temperature to set Oil temperature – we are starting to understand what temperature to set

it to, and how to do it.it to, and how to do it. Hysteresis value appears to work, need to determine what value it Hysteresis value appears to work, need to determine what value it

should be.should be.



Planning (Q2/2009)Planning (Q2/2009) Continue Installation El capillaries at the pads, possibly Continue Installation El capillaries at the pads, possibly

with variable capillarieswith variable capillaries Control oil temperatureControl oil temperature Set hysteresis valueSet hysteresis value Continue coming up to speed on HBSContinue coming up to speed on HBS

LBT Q1 2009 Eng/SW Review HBSC Hydrostatic Bearing System Sargent/Howard.

Documents

Transcript of LBT Q1 2009 Eng/SW Review HBSC Hydrostatic Bearing System Sargent/Howard.