Difference between revisions of "Solenoid Controls Redesign"
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'''To-do for solenoid controls redesign''' | '''To-do for solenoid controls redesign''' | ||
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+ | '''Obsolete...replaced by Fastrack schedule''' | ||
* Recommendations from Director's Review (Electrical System and Quench Protection) and Lehman Review | * Recommendations from Director's Review (Electrical System and Quench Protection) and Lehman Review | ||
− | ** determine if cold diodes can increase quench detection - ''' | + | ** determine if cold diodes can increase quench detection - '''No, Nov-2011''' |
** add fast DAQ system prior to testing first coil - '''Done''' | ** add fast DAQ system prior to testing first coil - '''Done''' | ||
** add tests for internal shorts, shorts to ground and ground faults in coil and power supply to start-up sequence | ** add tests for internal shorts, shorts to ground and ground faults in coil and power supply to start-up sequence | ||
− | ** add second dump circuit breaker - ''' | + | ** add second dump circuit breaker - '''Not needed, Mar-2012''' |
− | ** add additional quench circuit diodes - ''' | + | ** add additional quench circuit diodes - '''Not needed, Mar-2012''' |
− | ** add second quench detector | + | ** add second quench detector - '''PLC adequate as redundant QD - Mar 2012''' |
** add center tap to dump resistor and monitor ground current in the PLC | ** add center tap to dump resistor and monitor ground current in the PLC | ||
** add UPS on dump breakers to avoid fast discharges | ** add UPS on dump breakers to avoid fast discharges | ||
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* Cryo system | * Cryo system | ||
** need specs, new channels, new functionality, etc. from Jonathan - '''Done Dec 2011''' | ** need specs, new channels, new functionality, etc. from Jonathan - '''Done Dec 2011''' | ||
+ | ** complete P&I diagram | ||
** update mechanical/electrical interface drawing | ** update mechanical/electrical interface drawing | ||
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** lock/tag/try procedures for dump resistor | ** lock/tag/try procedures for dump resistor | ||
** procedures to check for dump resistor integrity and diode polarity prior to startup | ** procedures to check for dump resistor integrity and diode polarity prior to startup | ||
− | ** | + | ** bring Danfysik techs out to upgrade/refurbish all old Danfysik supplies |
− | + | ** do we have enough redundancy on overcurrent protection? | |
+ | *** Do we need shunt? can we use zfct for redundancy? use flux sensor? | ||
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*** list from Mark - '''Done Dec-2011''' | *** list from Mark - '''Done Dec-2011''' | ||
*** Use RTI 435NBX instead of Point I/O serial modules | *** Use RTI 435NBX instead of Point I/O serial modules | ||
+ | **** Check out RS485 instead of RS232 | ||
*** Use RTI 490NBX for Ethernet/IP readout | *** Use RTI 490NBX for Ethernet/IP readout | ||
** replace shunt with flux-monitoring sensor '''Done Feb-2012 use CEBAF board readout of ZFCT''' | ** replace shunt with flux-monitoring sensor '''Done Feb-2012 use CEBAF board readout of ZFCT''' | ||
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*** get screens on the web | *** get screens on the web | ||
*** security? | *** security? | ||
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+ | * Archiver | ||
+ | ** determine which channels need archiving | ||
+ | ** determine role of A-B vs EPICS archiver | ||
Latest revision as of 11:11, 15 August 2012
To-do for solenoid controls redesign
Obsolete...replaced by Fastrack schedule
- Recommendations from Director's Review (Electrical System and Quench Protection) and Lehman Review
- determine if cold diodes can increase quench detection - No, Nov-2011
- add fast DAQ system prior to testing first coil - Done
- add tests for internal shorts, shorts to ground and ground faults in coil and power supply to start-up sequence
- add second dump circuit breaker - Not needed, Mar-2012
- add additional quench circuit diodes - Not needed, Mar-2012
- add second quench detector - PLC adequate as redundant QD - Mar 2012
- add center tap to dump resistor and monitor ground current in the PLC
- add UPS on dump breakers to avoid fast discharges
- perform Failure Modes and Effects Analysis (FMEA)
- Logbook research
- check elog for all problems - Done Mar-2012
- Infrastructure
- get fourth rack - Done Nov 2011
- connect fourth rack to other three racks
- procure and install computer in racks
- Cryo system
- need specs, new channels, new functionality, etc. from Jonathan - Done Dec 2011
- complete P&I diagram
- update mechanical/electrical interface drawing
- Vacuum system
- design and create drawings
- purchase and implement vacuum control system
- Wiring
- add new equipment, modify for PXI system
- document trip chains
- label circuit breakers
- design and implement SOE circuits, need additional wiring and relays
- prototype use of SOE module and relays in controls test stand - Done Dec-2011
- identify and connect to internal power supply trip chains where feasible
- improve voltage range and eliminate cross-talk on voltage tap channels Done Mar-2012 use PXI system
- Danfysik power supply
- implement dump resistor center-tap ground fault detector
- lockbox for door key
- lock/tag/try procedures for dump resistor
- procedures to check for dump resistor integrity and diode polarity prior to startup
- bring Danfysik techs out to upgrade/refurbish all old Danfysik supplies
- do we have enough redundancy on overcurrent protection?
- Do we need shunt? can we use zfct for redundancy? use flux sensor?
- Quench detector
- need sub-coil inductances from Floyd/George - Done Dec-2011
- modify QD for final configuration
- test imbalance range adjustment in lab Done Nov-2012
- Instrumentation
- implement RS232 connections to all devices (e.g. vacuum gauges)
- list from Mark - Done Dec-2011
- Use RTI 435NBX instead of Point I/O serial modules
- Check out RS485 instead of RS232
- Use RTI 490NBX for Ethernet/IP readout
- replace shunt with flux-monitoring sensor Done Feb-2012 use CEBAF board readout of ZFCT
- design and build breakout box
- implement RS232 connections to all devices (e.g. vacuum gauges)
- NI PXI fast DAQ
- test PXI system - Done Feb-2012
- program and connect to PLC, EPICS
- A-B PLC programming
- consider existing program a prototype, rework for 15-20 year lifetime - Agreed Nov-2012
- send Josh to A-B training - Done Jan-2012
- use custom ("add-on") instructions to simplify everything
- use function block, structured text and ladder logic as appropriate
- add new channels, modify old ones according to latest channel assignments
- connect to Cryo PLC via ControlNet
- SOE module
- A-B HMI improvements
- SOE fault sequence screens
- other error screens
- Viewpoint
- get screens on the web
- security?
- Archiver
- determine which channels need archiving
- determine role of A-B vs EPICS archiver
- EWEB
- create tag lists
- security?
- EPICS
- new channels
- generate channel lists, identify those that should be exposed as EPICS PV's, create EPICS database
- new channels
- UPS power
- solenoid controls racks
- Danfysik control circuits and contactor
- target
- other cryo and vacuum systems?
- FDC cooling systems (dewpoint)?
- BCAL readout cooling system (dewpoint)?
- CDC/FDC gas system?
- network switches
- downtime due to power loss is deciding factor
Notes
- max ramp rate in the hall is approximately 10V / 20H = 0.5 A/sec
Possible future improvements
- monitor selected circuit breakers so operators can quickly find them when they trip