Transcript CentralDCS-Ryan

Operation of CSC DCS
Ryan Carroll
Carnegie Mellon
29-Sept-2009
1
CSC Operating Philosophy
• The Temperature is the only indicator of cooling effectiveness
Central DCS needs
• Gas going out is not the end of the world. Wait an hour if it
happens during day or swing shifts, or until 8 am if on graveyard
shift, then call our Field Manager
• If the Central Shifter can fix a problem from their station, we
have provided them the full solution and they should only call us
if it involves turning something off and after any action is taken.
• If the problem requires human intervention, the solution for the
shifter should be to call CSC Field Managers
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Operation of CSC DCS
2
Top Level of CSC DCS User Interface
Chamber
View
Temperature Monito
Overall State
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High Voltage Supplies
Operation of CSC DCS
Low Voltage
Supplies
3
Terminology
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Each disc is called a
Station
Trapezoids the wheel
are composed of
represent Chambers
Squares outside
wheel represent
Peripheral Crates
Each Peripheral
Crate controls a
number of Chambers
LV = Low Voltage
HV = High Voltage
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Peripheral Crate
Operation of CSC DCS
4
Chamber
CSC Status


Move cursor over
Chamber to read
LV, HV, and
Temperature
You must double
click the chamber
to perform control
actions upon it
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Operation of CSC DCS
5
Standby State


Standby
indicates that
the high
voltage has
been lowered
below data
taking levels
This is
currently
also our Safe
state
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Operation of CSC DCS
6
Temp/HV Monitor

There are 4 mode
options for the value
monitor display
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Max Temperature
Average Temperature
Max HV
Average HV

In continuous running
mode keep monitor
on Average
Temperature

While voltages are changing put monitor on Max High Voltage
If 18 or more chambers are red (T > 32 °C), turn off entire system
and call Field Manager (165509)
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Operation of CSC DCS
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
Possible Errors
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Operation of CSC DCS
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CommunicationLost
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Operation of CSC DCS
When a chamber has a
question mark on it,
that means it has lost
communication with
DCS
Mousing over will
reveal a No
Communication
message
If a chamber is out of
communication for
over an hour, call the
CSC Expert (161972)
9
Gas in Error

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CSCs are designed to run
for 24 hours without fresh
gas while beam is off.
If gas goes out during the
Morning shift or Afternoon
shift, wait an hour and then
call the CSC Field Manager
(165509) if gas is still in
error.
If gas goes out during the
Owl shift, inform the
morning shifters of the
problem and have them call
(165509) at 8 am if the gas
is still in error.
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Operation of CSC DCS
10
Cooling in Error

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Our Cooling is only
indicative as to whether it is
safe to turn on.
See the next slide to see if the
error is only a communication
lost error
If the Cooling goes into error
while CSC system is on,
monitor chamber and rack
temperatures.
If 18 or more chambers are
red (T > 32 °C), turn off
entire system and call 165509
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Operation of CSC DCS
11
Cooling Error - No Communication

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Most commonly when our
cooling goes into error it is
because there is no
communication to the server
Double click CSC_COOLING
and then
WATER_and_AIR_COOLING
to check
If the flow fields show “no data”
and a Device Not Connected
message is shown, there is no
real problem
Monitor the Yoke and Rack
circuits on the cooling screen
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Operation of CSC DCS
12
High or Low Voltage in Error
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If either of these subsystems are in error a Chamber or Peripheral
Crate will often also be in error.
The following slides are all examples of what to look for when High
or Low Voltage go into error.
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Operation of CSC DCS
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High Voltage Trip (Diagnosis)


If a single
chamber goes into
error, and the high
voltage is in error,
the HV in the
chamber has
tripped.
Double click on
the chamber, then
double click on
box ending in
“_HV” then go to
the next slide
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Operation of CSC DCS
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HV Trip
(Action)

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Select the
channel with
Ch_Trip for
status
Press FORCE
ON
If a chamber
trips three or
more times in a
shift, call the
CSC Expert
(161972)
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Operation of CSC DCS
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HV Trip
(Action)
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Our inner ring of
chambers on Station 1
have a different
interface
If you see this screen
instead, select the
drop down menu of
the sub-system in
error and select Off
After 10 minutes in
the same menu select
On
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Operation of CSC DCS
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LV for Single
Chamber Out
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If Low Voltage
currents or
voltages are zero
for a single
chamber, the
chamber has lost
its firmware
This can be
ignored when
not running
Otherwise call
the CSC Expert
(161972)
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Operation of CSC DCS
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Peripheral Crate
Loses LV (Diagnosis)

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If a Peripheral Crate is in
error and it’s corresponding
chambers have lost
communication, the
Peripheral Crate has lost Low
Voltage going to it.
Check if LV Primary Supplies
are also in error
Double click on the
Peripheral Crate in error and
proceed to the next slide
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Operation of CSC DCS
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Peripheral Crate
Loses LV (Action)
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Single Click the TO
SWITCH OFF
button
Call the Field
Manager at 165509
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Operation of CSC DCS
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Low Voltage
PrimaryLost
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When a Peripheral Crate
Loses LV, check the Low
Voltage Primaries (Labeled
Maratons)
If a Maraton goes into error,
double click the Maraton in
error and then in the top dropdown menu select “Off”
Call the Field Manager
(165509) after turning off the
Maraton

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Operation of CSC DCS
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Peripheral Crate
Overheats (Diagnosis)
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If a Peripheral Crate
is in error while it’s
Chambers are fine,
mouseover the
Peripheral Crate
Check the DMB
temperatures to see if
they are too hot
If so, double click on
the Peripheral Crate
in error and proceed
to the next slide
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Operation of CSC DCS
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Peripheral Crate
Overheats(Action)
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Single Click the TO
SWITCH OFF
button
Call the Field
Manager at 165509
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Operation of CSC DCS
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If a HV Primary Supply is in
error, this is what the system will
look like.
In the drop-down menu for
CSC_HV select Off
Call the Run Field
Manager at 165509
after turning the
High Voltage off
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Operation of CSC DCS
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Other Error / Unknown State
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Please double check to see if it
looks similar to one of the
previous problems and if so
please perform those actions.
No action described in this
manual will damage our system
If there is no procedure or the
situation is unique please call
the CSC Field Manager
(165509).
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Operation of CSC DCS
24
Changing High Voltage
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Operation of CSC DCS
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All On State

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This is our data
taking state
This state is not safe
for unknown or
dangerous beam
conditions
To reach this state
from any state,
select ON from
CMS_CSC
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Operation of CSC DCS
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Standby State

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This is our safe
state
This state is for
unknown or
dangerous beam
conditions
To reach this
state from any
state, select
STANDBY from
CMS_CSC
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Operation of CSC DCS
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Outer ON State
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Operation of CSC DCS
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Inner ON State
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Operation of CSC DCS
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