Difference between revisions of "Controls Meeting 3-May-2012"

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'''Stepper Motor Control'''
 
'''Stepper Motor Control'''
  
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See Vanik's slides (link above) for many details. The XPS controller has many sophisticated features and can control a great variety of motors.  It can also simultaneously control multiple motors (max eight) to create complicated trajectories.  We do not need any of its fancy features and will just use it to control a single axis at a time.  Vanik has ported an XPS EPICS driver from the APS (Mark Rivers) and developed CSS gui's to control it.  He has successfully performed many of the operations needed in Hall D, including recovery after power loss, resetting to home, and moving to a specific location.  He needs to get a motor with an encoder to test the remaining features (we hope to borrow one from Hall B).  He also needs to read the stage position using external hardware in order to implement Harp scans, which involve coordination between the controller and an external DAQ system.   
+
See Vanik's slides (link above) for many details.
 +
 
 +
The XPS controller has many sophisticated features and can control a great variety of motors.  It can also simultaneously control multiple motors (max eight) to create complicated trajectories.  We do not need any of its fancy features and will just use it to control a single axis at a time.  Vanik has ported an XPS EPICS driver from the APS (Mark Rivers) and developed CSS gui's to control it.  He has successfully performed many of the operations needed in Hall D, including recovery after power loss, resetting to home, and moving to a specific location.  He needs to get a motor with an encoder to test the remaining features (we hope to borrow one from Hall B).  He also needs to read the stage position using external hardware in order to implement Harp scans, which involve coordination between the controller and an external DAQ system.   
  
 
If this is successful the XPS controller should satisfy all motor controller needs for Hall D, and we won't need a VME-based system to do Harp scans.  Hovanes thinks we need one XPS in Hall D and two in the Tagger Hall (already need 8 channels in the Tagger Hall and more may be coming), and perhaps another in the Rack Room for testing and as a spare.  They cost about $8k for the controller mainframe plus $500 each for i/o cards (max eight).  See Vanik's note for a list of applications in Hall D.
 
If this is successful the XPS controller should satisfy all motor controller needs for Hall D, and we won't need a VME-based system to do Harp scans.  Hovanes thinks we need one XPS in Hall D and two in the Tagger Hall (already need 8 channels in the Tagger Hall and more may be coming), and perhaps another in the Rack Room for testing and as a spare.  They cost about $8k for the controller mainframe plus $500 each for i/o cards (max eight).  See Vanik's note for a list of applications in Hall D.

Revision as of 16:18, 3 May 2012

Agenda

  • Announcements
  • Minutes from previous meeting 19-Apr-2012
  • Stepper motor control - Vanik
  • EPICS - Hovanes, Vanik
    • alarm system, goniometer, UConn boards, other power supplies, etc.
  • Counting house installation - Hovanes, Mark
  • Solenoid_Controls_Redesign - Mark, Josh, Scot, Yi, Elliott
    • FMEA
    • UPS power to Danfysik, SOE, QD, overcurrent protection, ground fault detector, etc.
  • JInventory database - Elliott
  • Test stand - Hovanes, Josh
  • PLC programming and PXI system - Josh
  • Elogs and databases - Elliott
  • Mantis task tracker
  • Experiment Control Supervisor - Elliott


Time/Location

9:30 AM Thurs 3-May-2012 CC L207


Announcements

Next Meeting

9:30am 17-May-2012 CC L207


Minutes

Present: Elliott W, Mark S, Josh B, Hovanes E, Vanik K.


Vanik's presentation on stepper motor control took up most of the meeting (pptx and live demo). Afterwards we had brief status reports and discussions on selected topics.


Stepper Motor Control

See Vanik's slides (link above) for many details.

The XPS controller has many sophisticated features and can control a great variety of motors. It can also simultaneously control multiple motors (max eight) to create complicated trajectories. We do not need any of its fancy features and will just use it to control a single axis at a time. Vanik has ported an XPS EPICS driver from the APS (Mark Rivers) and developed CSS gui's to control it. He has successfully performed many of the operations needed in Hall D, including recovery after power loss, resetting to home, and moving to a specific location. He needs to get a motor with an encoder to test the remaining features (we hope to borrow one from Hall B). He also needs to read the stage position using external hardware in order to implement Harp scans, which involve coordination between the controller and an external DAQ system.

If this is successful the XPS controller should satisfy all motor controller needs for Hall D, and we won't need a VME-based system to do Harp scans. Hovanes thinks we need one XPS in Hall D and two in the Tagger Hall (already need 8 channels in the Tagger Hall and more may be coming), and perhaps another in the Rack Room for testing and as a spare. They cost about $8k for the controller mainframe plus $500 each for i/o cards (max eight). See Vanik's note for a list of applications in Hall D.


xxx

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