Difference between revisions of "Controls Meeting 15-Dec-2011"

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(Created page with "=Agenda= * Announcements * Minutes from previous meeting 1-Dec-2011 * Report from Scot on cryo design/changes * Equipment orders - Mark * [[S...")
 
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* Report from Scot on cryo design/changes
 
* Report from Scot on cryo design/changes
−
 
−
 
−
 
 
* Equipment orders - Mark
 
* Equipment orders - Mark
 
* [[Solenoid_Controls_Redesign]] - Mark, Josh, Scot, Cody, Yi, Elliott
 
* [[Solenoid_Controls_Redesign]] - Mark, Josh, Scot, Cody, Yi, Elliott
−
** coil taps
 
−
*** 17 taps plus vapor-cooled leads plus splices
 
−
*** one connection to fast daq and one to PLC, isolated somehow, account for range and precision
 
−
*** additional connections to quench detector, not isolated
 
 
** Danfysik quench detector
 
** Danfysik quench detector
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*** [[Media:Old_Quench_Detector.pdf | Current Quench Detector Circuit]], [[Media:Danfysik_QD_circuit.pdf | New QD Circuit]]
 
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*** [[Media:Danfysik_QD.pdf | Simplified version]]
 
−
*** how many channels to use?
 
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** changes to cryo control system
 
 
** shunt replacement
 
** shunt replacement
 
** UPS power to Danfysik
 
** UPS power to Danfysik
 
** ground fault detector using dump resistor
 
** ground fault detector using dump resistor
 
** redundant Danfysik contactor, quench detector, dump diodes?
 
** redundant Danfysik contactor, quench detector, dump diodes?
−
** need 4 NI fast daq modules, 8 chan/module
+
** need more NI fast daq modules, 8 chan/module
 
* Experiment Control Supervisor - Vardan, Hovanes, Elliott
 
* Experiment Control Supervisor - Vardan, Hovanes, Elliott
−
** use CSS?
 
 
* EPICS evaluation
 
* EPICS evaluation
 
** archiver
 
** archiver
 
** alarm system
 
** alarm system
 
** backup/restore
 
** backup/restore
−
* EPICS - Nerses, Hovanes, Elliott
+
* EPICS update - Nerses, Hovanes, Elliott
−
** JLab discriminator
+
−
** directory structure
+
 
* Controls test stand - Hovanes, Josh
 
* Controls test stand - Hovanes, Josh
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** SOE module
 
 
** 435NBX serial module
 
** 435NBX serial module
 
** EPICS drivers and gui's
 
** EPICS drivers and gui's
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** add-on instructions -- ladder logic, function block, structured text
 
** add-on instructions -- ladder logic, function block, structured text
 
* Elog - Elliott
 
* Elog - Elliott
−
** [https://halldweb1.jlab.org/elog-halld Midas elog]
+
** [https://halldweb.jlab.org/elog-halld Midas elog]
 
** Operator elog
 
** Operator elog
−
* [http://halldweb1.jlab.org/mantisbt Mantis task tracker]
+
* [http://halldweb.jlab.org/mantisbt Mantis task tracker]
−
* PyIRMIS - Hovanes, Elliott
+
* PyIRMIS or CLAS inventory database? - Hovanes, Elliott
  
  
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9:30 AM Thurs 1-Dec-2011 CC L207
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9:30 AM Thurs 1-Dec-2011 CC F325
  
  
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Thurs 1-Dec-2011 9:30am CC L207
+
After the holidays.
  
  
  
 
=Minutes=
 
=Minutes=
 +
 +
Present:  Elliott W, Mark S, Cody D, Josh B, Hovanes E, Scot S.
 +
 +
 +
 +
'''Equipment Orders'''
 +
 +
Mark has a few items to order.  He will not purchase rack bases since we inherited a large number of rack-mount power strips.
 +
 +
 +
 +
'''Solenoid Controls Redesign'''
 +
 +
* Scot presented near-final controls designs and drawings covering PLC chassis and module layouts, the many new or modified channels, changed actuator functions, etc.
 +
* We will have a redundant He liquid level monitor based on differential pressure, no need for the proposed "idiot light" (carbon resistor) system.
 +
* Josh will basically rewrite the entire PLC controls program from scratch, using the existing version as an "example."
 +
* We likely need one more Lakeshore Temperature monitor for the flange temperature probes.
 +
* Elliott reported we're nearly done with understanding and determining modifications needed for the quench detector.
 +
* Mark noted that Class 1 systems require less than 5 mA so that 20k resistors will work for 100 V max.  George needs to verify the max voltage during fast dumps and quenches.
 +
* Mark will order the shunt replacement when Yi verifies it meets fast DAQ requirements.
 +
* Mark will have a center tab welded to the dump resistor so he can use it for the ground fault detector.
 +
 +
 +
 +
'''EPICS'''
 +
 +
* Elliott reported plans to meet with Accelerator to explore many topics, including layering CSS/Databrowser on top of the MyA achive engine.
 +
* Hovanes will move on to alarm systems after the archiver.
 +
* Nerses continues to work on the JLab discriminator, next will be high and low voltage systems.
 +
 +
 +
 +
'''Test Stand'''
 +
 +
* Josh verified the SOE plus relays works as expected.
 +
* Next he will check the 435NBX ethernet-to-serial gateway.
 +
 +
 +
 +
'''ELogs'''
 +
 +
* Elliott demonstrated the new Midas elogs for manuals, maintenance logging and procedures.  Comments are welcome, and please start using them.
 +
* We still need to choose and operator elog.
 +
 +
 +
 +
'''Mantis'''
 +
 +
Elliott reviewed recent progress reported in the Mantis system.  More people need to start using this!

Latest revision as of 17:54, 31 March 2015

Agenda

  • Announcements
  • Minutes from previous meeting 1-Dec-2011
  • Report from Scot on cryo design/changes
  • Equipment orders - Mark
  • Solenoid_Controls_Redesign - Mark, Josh, Scot, Cody, Yi, Elliott
    • Danfysik quench detector
    • shunt replacement
    • UPS power to Danfysik
    • ground fault detector using dump resistor
    • redundant Danfysik contactor, quench detector, dump diodes?
    • need more NI fast daq modules, 8 chan/module
  • Experiment Control Supervisor - Vardan, Hovanes, Elliott
  • EPICS evaluation
    • archiver
    • alarm system
    • backup/restore
  • EPICS update - Nerses, Hovanes, Elliott
  • Controls test stand - Hovanes, Josh
    • 435NBX serial module
    • EPICS drivers and gui's
  • PLC programming, Viewpoint, licenses, etc. - Josh
    • high-priority tasks
    • add-on instructions -- ladder logic, function block, structured text
  • Elog - Elliott
  • Mantis task tracker
  • PyIRMIS or CLAS inventory database? - Hovanes, Elliott


Time/Location

9:30 AM Thurs 1-Dec-2011 CC F325


Announcements

Next Meeting

After the holidays.


Minutes

Present: Elliott W, Mark S, Cody D, Josh B, Hovanes E, Scot S.


Equipment Orders

Mark has a few items to order. He will not purchase rack bases since we inherited a large number of rack-mount power strips.


Solenoid Controls Redesign

  • Scot presented near-final controls designs and drawings covering PLC chassis and module layouts, the many new or modified channels, changed actuator functions, etc.
  • We will have a redundant He liquid level monitor based on differential pressure, no need for the proposed "idiot light" (carbon resistor) system.
  • Josh will basically rewrite the entire PLC controls program from scratch, using the existing version as an "example."
  • We likely need one more Lakeshore Temperature monitor for the flange temperature probes.
  • Elliott reported we're nearly done with understanding and determining modifications needed for the quench detector.
  • Mark noted that Class 1 systems require less than 5 mA so that 20k resistors will work for 100 V max. George needs to verify the max voltage during fast dumps and quenches.
  • Mark will order the shunt replacement when Yi verifies it meets fast DAQ requirements.
  • Mark will have a center tab welded to the dump resistor so he can use it for the ground fault detector.


EPICS

  • Elliott reported plans to meet with Accelerator to explore many topics, including layering CSS/Databrowser on top of the MyA achive engine.
  • Hovanes will move on to alarm systems after the archiver.
  • Nerses continues to work on the JLab discriminator, next will be high and low voltage systems.


Test Stand

  • Josh verified the SOE plus relays works as expected.
  • Next he will check the 435NBX ethernet-to-serial gateway.


ELogs

  • Elliott demonstrated the new Midas elogs for manuals, maintenance logging and procedures. Comments are welcome, and please start using them.
  • We still need to choose and operator elog.


Mantis

Elliott reviewed recent progress reported in the Mantis system. More people need to start using this!

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