Difference between revisions of "For the second coil"
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** minimize summed coil voltage readouts, do most sums in PLC - '''done''' | ** minimize summed coil voltage readouts, do most sums in PLC - '''done''' | ||
** add separate readouts of splice and vapor-cooled lead voltages - '''done''' | ** add separate readouts of splice and vapor-cooled lead voltages - '''done''' | ||
− | ** combine splice and lead into one hardware quench/overvoltage protection channel using Newport controller | + | ** combine splice and lead into one hardware quench/overvoltage protection channel using Newport controller - '''done''' |
** match and balance all current-limiting resistors, go back to original 100k Ohm matched resistors - '''done''' | ** match and balance all current-limiting resistors, go back to original 100k Ohm matched resistors - '''done''' | ||
** read out voltage taps for quench detection and DAQ using separate resistor chain - '''done''' | ** read out voltage taps for quench detection and DAQ using separate resistor chain - '''done''' | ||
− | ** update wiring diagrams to "as built" | + | ** update wiring diagrams to "as built" - '''done''' |
** get diagrams and spec sheets to Fernando - '''done''' | ** get diagrams and spec sheets to Fernando - '''done''' | ||
** understand signal clipping and interaction between readout modules, test and replace if necessary | ** understand signal clipping and interaction between readout modules, test and replace if necessary | ||
Line 20: | Line 20: | ||
** fix slow dump - '''done''' | ** fix slow dump - '''done''' | ||
** implement ground fault detection compatible with quench detector | ** implement ground fault detection compatible with quench detector | ||
− | ** make more copies of full Danfysik power supply manual (get from Steve L) | + | ** make more copies of full Danfysik power supply manual (get from Steve L) - '''done''' |
* Danfysik quench detector | * Danfysik quench detector | ||
** match and balance resistors - '''done''' | ** match and balance resistors - '''done''' | ||
** install test points for gain/offset tuning - '''done''' | ** install test points for gain/offset tuning - '''done''' | ||
− | ** install pots for balance | + | ** install pots for balance - '''done''' |
− | ** install bias circuit if unable to eliminate Danfysik DC offset - ''' | + | ** install bias circuit if unable to eliminate Danfysik DC offset - '''done''' |
− | *** doesn't appear to be needed since offset problem solved | + | *** doesn't appear to be needed since offset problem solved, but we did it for one channel anyway |
* Dataforth system | * Dataforth system | ||
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* A-B HMI improvements | * A-B HMI improvements | ||
** get additional HMI client license from Steve | ** get additional HMI client license from Steve | ||
− | ** get second HMI computer working | + | ** get second HMI computer working - '''done''' |
** implement A-B license server - '''done''' | ** implement A-B license server - '''done''' | ||
** get A-B IIS file server system working - '''done''' | ** get A-B IIS file server system working - '''done''' | ||
Line 53: | Line 53: | ||
* A-B PLC program improvements | * A-B PLC program improvements | ||
− | ** new channels | + | ** new channels - '''done''' |
** simplify many operations | ** simplify many operations | ||
** improve PLC early problem detection | ** improve PLC early problem detection | ||
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** implement early-warning quench/overvoltage detection in PLC | ** implement early-warning quench/overvoltage detection in PLC | ||
** use custom instructions to simplify code | ** use custom instructions to simplify code | ||
+ | ** try A-B alarm and logging systems | ||
* EPICS | * EPICS |
Revision as of 09:51, 10 February 2011
To-do list
- Wiring
- remove jumper box and cables and bring to F117 for rework - done
- remove current-limiting resistor boxes, bring to F117 for rework - done
- minimize summed coil voltage readouts, do most sums in PLC - done
- add separate readouts of splice and vapor-cooled lead voltages - done
- combine splice and lead into one hardware quench/overvoltage protection channel using Newport controller - done
- match and balance all current-limiting resistors, go back to original 100k Ohm matched resistors - done
- read out voltage taps for quench detection and DAQ using separate resistor chain - done
- update wiring diagrams to "as built" - done
- get diagrams and spec sheets to Fernando - done
- understand signal clipping and interaction between readout modules, test and replace if necessary
- minimize noise
- Danfysik power supply
- understand ramp-down mechanism - done
- measure fast dump resistors in power supply - done
- eliminate 2V DC offset - done
- fix slow dump - done
- implement ground fault detection compatible with quench detector
- make more copies of full Danfysik power supply manual (get from Steve L) - done
- Danfysik quench detector
- match and balance resistors - done
- install test points for gain/offset tuning - done
- install pots for balance - done
- install bias circuit if unable to eliminate Danfysik DC offset - done
- doesn't appear to be needed since offset problem solved, but we did it for one channel anyway
- Dataforth system
- Correct for 2M Ohm internal impedance and 200k Ohm resistors in voltage tap readouts - done
- USB device
- install voltage dividers to extend voltage range
- add resistors to Zener protection circuit
- automated elog entries
- automatically dump screens to files
- create perl script
- create cron job
- A-B HMI improvements
- get additional HMI client license from Steve
- get second HMI computer working - done
- implement A-B license server - done
- get A-B IIS file server system working - done
- upgrade to 100 screen license if needed
- change HMI database to MySql - done
- create more pre-defined trend plots
- simplify existing screens
- better indication of what caused fast/slow dump
- A-B PLC program improvements
- new channels - done
- simplify many operations
- improve PLC early problem detection
- improve PLC cryo control under varying CTF operating conditions
- implement early-warning quench/overvoltage detection in PLC
- use custom instructions to simplify code
- try A-B alarm and logging systems
- EPICS
- serve out all PLC channels to CA
- need list from Josh
- implement guard shack notification for IOC hang/crash
- serve out all PLC channels to CA
For the hall
- note that max ramp rate in the hall is approximately 10V / 20H = 0.5 A/sec
- should we install a UPS on the Danfysik contactor and control boards?
- do we need additional valves, check valves, bypasses, whatever?
- do we need Dataforth voltage attenuators on coil tap channels?
- do we need active isolation of coil tap channels, etc?
Basic questions
- lag between field and current...are there turn-to-turn shorts in coil 1?
- maybe short, maybe eddy currents...
- will we open up coil 3 and/or coil 4?
- do we want an independent review of our fast (and slow) dump strategy and system?
- document our experience!