Solenoid Controls Redesign

To-do for solenoid controls redesign

Danfysik power supply
- do we want to go to Ethernet based control?
- choose ground fault detection mechanism

Instrumentation
- implement system to isolate fault detectors and determine time sequence of trips
- monitor circuit breakers

Notes

note that max ramp rate in the hall is approximately 10V / 20H = 0.5 A/sec
need travelers for coil installation.
should we install a UPS on the Danfysik contactor and control boards?
should we install a second contactor in the Danfysik power supply?
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?
should we monitor all circuit breakers?
should we monitor all relays?
what is the effect of B field on sensors/relays? should some instrumentation be relocated?
do we need new flow sensors, or should they be relocated?
lock box for power supply key
more ethernet power strips
use custom ("add-on") instructions to simplify PLC code
install permanent VME-based fast DAQ
logarithmic or equivalent current and voltage measurements
isolate coil taps
sequence of events module
attenuators on Dataforth modules
check dump resistor and diode in checklist, interlocks
backup in case dump resistor/diode broken
dump at low current to check dump system in checkout list
logarithmic amps on voltages to get full range
manual check of resistor/diode connection and polarity
improve checklists and test plan
resistor/diode checks in maintenance OSP and/or operations OSP

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