Difference between revisions of "Solenoid Controls Redesign"
From GlueXWiki
Line 5: | Line 5: | ||
** document trip chains | ** document trip chains | ||
** label circuit breakers | ** label circuit breakers | ||
+ | ** use Sequence-Of-Events (SOE) module, need additional wiring and relays | ||
+ | ** cross-talk on voltage tap channels | ||
+ | *** change connection scheme? | ||
+ | *** change current limiting scheme? | ||
+ | *** use local measurement and current-loop to bring it down? | ||
+ | ** extend voltage measurement range using attenuators on separate Dataforth/PLC channels | ||
+ | ** should we use high-bandwidth Dataforth modules? | ||
+ | ** should we monitor all relays? | ||
Line 11: | Line 19: | ||
** do we want to go to Ethernet based control? | ** do we want to go to Ethernet based control? | ||
** choose ground fault detection mechanism | ** choose ground fault detection mechanism | ||
+ | ** address committee concerns | ||
+ | *** dual fast dump switches? | ||
+ | *** other redundancies? | ||
+ | *** UPS on control boards and contactor? | ||
+ | ** lockbox for key | ||
+ | ** lock/tag/try for dump resistor | ||
+ | ** procedures to check for dump resistor integrity and diode polarity | ||
Line 16: | Line 31: | ||
* Quench detector | * Quench detector | ||
** can we get a good balance? | ** can we get a good balance? | ||
− | ** do we to design our own QD? | + | ** need sub-coil inductances in proper order |
+ | ** do we need to design our own QD? | ||
Line 23: | Line 39: | ||
** implement system to isolate fault detectors and determine time sequence of trips | ** implement system to isolate fault detectors and determine time sequence of trips | ||
** monitor circuit breakers | ** monitor circuit breakers | ||
+ | ** implement RS232 connections to all devices (e.g. vacuum gauges) | ||
Line 37: | Line 54: | ||
* A-B PLC program improvements | * A-B PLC program improvements | ||
− | ** custom instructions to simplify everything | + | ** custom ("add-on") instructions to simplify everything |
Line 54: | Line 71: | ||
** use just for back-door access | ** use just for back-door access | ||
** security? | ** security? | ||
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+ | * UPS power | ||
+ | ** to where? target? | ||
+ | ** downtime due to power loss is deciding factor | ||
+ | |||
'''Notes''' | '''Notes''' | ||
− | * | + | * max ramp rate in the hall is approximately 10V / 20H = 0.5 A/sec |
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Revision as of 14:11, 13 September 2011
To-do for solenoid controls redesign
- Wiring
- document trip chains
- label circuit breakers
- use Sequence-Of-Events (SOE) module, need additional wiring and relays
- cross-talk on voltage tap channels
- change connection scheme?
- change current limiting scheme?
- use local measurement and current-loop to bring it down?
- extend voltage measurement range using attenuators on separate Dataforth/PLC channels
- should we use high-bandwidth Dataforth modules?
- should we monitor all relays?
- Danfysik power supply
- do we want to go to Ethernet based control?
- choose ground fault detection mechanism
- address committee concerns
- dual fast dump switches?
- other redundancies?
- UPS on control boards and contactor?
- lockbox for key
- lock/tag/try for dump resistor
- procedures to check for dump resistor integrity and diode polarity
- Quench detector
- can we get a good balance?
- need sub-coil inductances in proper order
- do we need to design our own QD?
- Instrumentation
- implement system to isolate fault detectors and determine time sequence of trips
- monitor circuit breakers
- implement RS232 connections to all devices (e.g. vacuum gauges)
- VME-based fast DAQ
- NI vs VME?
- A-B HMI improvements
- fault sequence screens
- A-B PLC program improvements
- custom ("add-on") instructions to simplify everything
- EPICS
- new channels
- Viewpoint
- test
- EWEB
- use just for back-door access
- security?
- UPS power
- to where? target?
- downtime due to power loss is deciding factor
Notes
- max ramp rate in the hall is approximately 10V / 20H = 0.5 A/sec