definition: automation is the use of control systems for operating equipment with minimal or reduced...

Definition:Automation is the use of control systems for operating equipment with minimal or reduced human intervention.

+save labour+reproducibility+accuracy

- high initial investment- increased complexity- knowledge loss- erroneous behaviour in

unforesee situations

WIR SCHAFFEN WISSEN – HEUTE FÜR MORGEN

Automation Overview with Examples from the SLS

Andreas Lüdeke :: Operation Manager Swiss Light Source :: Paul Scherrer Institut

at the MAX-IV Automation Review Meeting, 3. - 4. Dec. 2015

•Know the task!- desired sequence- possible failures- success?

•Avoid “black boxes”- knowledge loss- silent failures- critical situations

Best Practices

•Accelerator start-up- checklists- sequencing- reports

•Device automation- example: RF start-up- example: RF tuning-loop

•Semi-automated operator procedures- example: “Open ID gaps” / “Close ID gaps”

Areas of Accelerator Automation

•Automated measurements- example: beam lifetime- example: BBA

•Failure reporting- example: RF first-fault- example: magnet PS failure reports

•Failure recovery- example: RF tuning loop- example: restore beam after trip

Areas of Accelerator Automation

Ergonomic Operator Interfaces

Task focussed Operator Interface

PSI,

RF controlOperator tasks: • Trip recovery• Set voltage• Set phase

Task focussed Operator Interface

PSI,

RF controlOperator tasks: • Trip recovery• Set voltage• Set phase

Dedicated Panelfor Operation

•B.R. Hollifield, Alarm Management: Seven Effective Methods for Optimum Performance

•Alarm handler objectives- acoustic alarm if operator intervention required- every possible problem should raise an alarm- no alarm, if no operator intervention is required!- provide guidance

•Alarm handler is THE central operator tool

Alarm Management Best Practices

•Characteristics of a good alarm- Relevant- Unique- Timely- Prioritised- Understandable- Diagnostic- Advisory- Focussing

HSE Alarms Strategy: EEMUA Guide, Experience, IEC61508/11


•Nuissance / chattering alarms•Operator action undefined•Stale alarms “Shelving”•Alarm storms•Wrong alarm priorities

Alarm Management Problems

•Define “Alarm Philosophy”- Every alarm is documented and has an identified response- Alarm must not be ignored!- What alarms, which priorities and guidance?- Responsibilities, Key Performance Indicator

•Regular Alarm Performance Report- Analyse alarm frequencies- Lists of nuisance and stale alarms- Define action plan and assess progress


•Alarm Documentation and Rationalization- Create alarm priority grid- Document each alarm type: causes, corrective actions,

consequences, time to respond, desired modifications, …- Alarm trip-point determination- Operator Training- Alarm philosophy- Handling and reporting nuisance alarms- Controls applications regarding alarms- Who can change what: alarm trip levels, alarm disabling- Alarm handling strategies: Shelving, State-Based, Flood Suppression, …- Proper and improper alarm suppression


Ingredients to successful automation

• Know your tasks• Avoid “black boxes”• Comprehensive automation- Start-up- Devices- Operator procedures- Measurements- Failure reporting- Failure recovery• Proper user interface design• Alarm handler• Alarm management

definition: automation is the use of control systems for operating equipment with minimal or reduced...

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