maximising control, visualisation and information at the mix plant at lonmin
TRANSCRIPT
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Maximising control, visualisation and information at the Mix plant at Lonmin
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Brian Davies Senior Technician
Roelf BoshoffSI Engineer
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Agenda
IntroductionIntroductionIntroductionIntroduction
The ProjectThe Project
Benefits of version 3 graphicsBenefits of version 3 graphics
ConsiderationsConsiderations
Technical ChallengesTechnical Challenges
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Introduction to Lonmin
► World’s third largest Platinum producer
► Operations based in South Africa▪ North West▪ Limpopo
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Introduction to Mix Concentrator
Mix Concentrator processes► Stock pile and raw ore conveyor system
▪ Raw ore stockpiles▪ Conveyed to 40 m silos▪ 4 to 5 grams of PGM's per ton
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Introduction to Mix Concentrator
Mix Concentrator processes► Milling
▪ Raw ore fed into ball mill▪ Diluted with water - Slurry▪ Cyclones separate fine from coarse▪ Coarse returned to mill
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Introduction to Mix Concentrator
Mix Concentrator processes► Floatation
▪ Chemicals used to attract PGM’s to bubbles ▪ Primary roughers extract 80-90%▪ Secondary roughers collect rest▪ Contaminants removed in cleaning section
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Introduction to Mix Concentrator
Mix Concentrator processes► Thickener – cone shaped
▪ Feed into centre of cone – 90% of solids▪ Solids settle to bottom - flocculants▪ Lighter particles settle on outside – less turbulent▪ Rake particles to centre at 0.12 RPM▪ Pumped from centre
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Mix Plant Network Topology
Allen-Bradley Workstation
ArchestrA IDEWorkstation
ControlSwitch
ProductionSwitch
AOS 1
AOS 2
INSQL
GalaxyRepository
MIX PLC 1 MIX PLC 2 MIX PLC 3 MIX PLC 4 MIX PLC 5
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IntroductionIntroduction
Agenda
The projectThe projectThe projectThe project
Benefits of version 3 graphicsBenefits of version 3 graphics
ConsiderationsConsiderations
Technical ChallengesTechnical Challenges
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The Project
► Replace TI PLCs with Allen-Bradley PLCs
► Reprogram PLC code using standard routines made possible by using an Allen-Bradley PLC
► Rebuild SCADA using ArchestrA and version 3 graphics▪ Build a modern looking SCADA ▪ Create a standard graphic library for Mix Concentrator▪ Establish a system which is easy to expand and
change using the ArchestrA architecture
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The projectThe project
IntroductionIntroduction
Agenda
Benefits of version 3 graphicsBenefits of version 3 graphicsBenefits of version 3 graphicsBenefits of version 3 graphics
ConsiderationsConsiderations
Technical ChallengesTechnical Challenges
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Benefits of version 3 Graphics
Why version 3 graphics?
► The superior graphics (Pretty pictures)► Have all the graphics in one place► Inserting graphics into SCADA is easy ► Graphics can be reused► Added benefit of connection status indication
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Benefits of version 3 Graphics
Superior Graphics
► Enhanced Graphics► Esthetically Pleasing► Realistic Graphics► Air of Professiolism
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Benefits of version 3 Graphics
► Enhanced Graphics
Transparency
Embossed Symbols
Patterns
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Benefits of version 3 Graphics
► Esthetically Pleasing
Lighting Effects
Shaded Tanks
3D Symbols
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Benefits of version 3 Graphics
► Realistic Graphics
Oil Filter
Solenoid Valve
Mill displaying gears
Animated Fan
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Benefits of version 3 Graphics
► Air of Professiolism
HMI Time
PLC Time
Control Logix PLC
Allen Bradley DeviceNet
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Benefits of version 3 Graphics
Have all the graphics in one place(Forcing Standards)
► Add symbols to template
► Link popups to icons
► Populate graphics with attributes
ArchestrA supplied the means to create Standard Templates
With version 3 graphics:
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Benefits of version 3 Graphics
► Add symbols to template
Popup Graphics
Icon GraphicsGraphic
DescriptionInherited from Master template
Referenced as me.PopUp
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Benefits of version 3 Graphics
► Populate graphics with attributes
Template Attributes
Icon Graphic
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Benefits of version 3 Graphics
► Link popups to icons
Reference Popup Graphic
Icon graphic
Activate as Icon
Show popup on click
Example Popup
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Benefits of version 3 Graphics
Inserting graphics into SCADA is easy
ArchestrA instance
Symbols embedded in instance
Embed ArchestrA Graphic
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Benefits of version 3 Graphics
Inserting graphics into SCADA is easy
Symbol embedded in SCADA
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Benefits of version 3 Graphics
Graphics can be reused
► Another Graphic► The SCADA► Template as embedded graphic
After graphic is created in graphic toolbox it can be reused in:
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Benefits of version 3 Graphics
► Graphic used in another Graphic
Another GraphicAnother Graphic
Graphic from graphic toolbox
Original graphic
Embedded graphic
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Benefits of version 3 Graphics
► Graphic used in the SCADA(Where graphic is not an icon)
Tag entered in Scada
Graphic from graphic toolbox
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Benefits of version 3 Graphics
► Graphic used in a template(Graphic becomes an icon)
Graphic from graphic toolbox
ArchestrA template
Symbol nameIcon used in
SCADA
Tag already assigned
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Benefits of version 3 Graphics
Added benefit of connection status indication
* Status icon indicates status of the connection to the IO server
Add status Indication
Status indication definitions
Status added to Icon
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Benefits of version 3 Graphics
How did version 3 graphics benefit me?
► Reduced number of windows to maintain► Reduced development time – More time to
focus on optimizing plant► Simplified the development – Any
technician can do development► Graphics self-explanatory – Less time
needed to train operators
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Benefits of version 3 graphicsBenefits of version 3 graphics
The projectThe project
IntroductionIntroduction
Agenda
ConsiderationsConsiderationsConsiderationsConsiderations
Technical ChallengesTechnical Challenges
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Consideration
► Do not use minimum hardware specifications for GR▪ Might cause instability,▪ Performance issues,
► Network stability▪ Communication failure
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ConsiderationsConsiderations
BenefitsBenefits
ObjectiveObjective
IntroductionIntroduction
Agenda
Technical ChallengesTechnical ChallengesTechnical ChallengesTechnical Challenges
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Technical Challenges
Flushing Sequence Popup
► To clean a pump that carries slurry before stopping and starting
► Typical arrangement:
Flush Valve
Delivery ValveSuction Valve
Slurry Pump
Drain Valve
GSW Analog
GSW Valve
* Many different configurations exist
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Technical Challenges
Flushing Sequence Popup
All the slurry pumps need flushing valves
Not Enough space to display flush valves – Need a popup
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Technical Challenges
Flushing Sequence Popup
Flush Button Opens
Flush Button Indicating problem in flush sequence
7 valve positions 3 types of pumps Analog only constant 15120 possible
configurations
Flush popup template graphic
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Technical Challenge
► HOW was it done?▪ Created a flush template▪ Popup graphic embedded in template▪ Populate popup graphic with dummy icons▪ Define equipment in instance of object▪ Use OwningObject scripts to assign equipment
Flushing Sequence Popup
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Technical Challenge
► End result
Flushing Sequence Popup
Completely dynamic popup
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Technical Challenges
PLC LayoutWHY?
Indicate module status
Show Inter-PLC communication
Fault Finding
Grapical devicenet represenation
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Technical Challenge
► A standard naming convention makes Archestra templates possible
► Naming convention example:▪ Rack R01▪ Slot S04▪ Slot in a rack: R01S04
► Templates created to assign the IO automatically using the naming convention and containment
PLC Layout
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Technical Challenge
► Templates created and their containmentPLC template – assign PLC path
Rack Template – module status indication
Devicenet template – DNB module
CN2DN templateDevicenet template – CN2DN module
Rack Template
► Example Layout of containment:
PLC Layout
* Contained name very important* PLC path propagated to assign IO
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Technical Challenge
PLC Layout
► The OLD methodTags Needed for a single Devicenet Scanner
Tags Needed for Slot Status of a single Rack
Tags Needed for:
• One PLC
• Six Racks
• Two Devicenet Scanners
► The NEW method
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Technical Challenges
Effective alarm annunciation and navigation
► Old methods used▪ Button to open a single alarm list▪ Indicate last four alams on top menu
► 1st stage of new method▪ Divide alarms into four groups ▪ Add animation to indicate alarms▪ Navigate to alarm list
► 2nd stage of new method▪ Display critical alarms on top menu▪ Display mouse-over descriptons▪ Shown critical alarm count▪ Add action to navigate to window and popup
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Technical Challenges
Effective alarm annunciation and navigation
BUTWith the new and improved system▪ Alarms can be acknowledged from the popup▪ Type of alarm and priority also indicated
Icon indicating alarm (Red)
Alarm acknowledgement button
Alarm latch in PLC indication
Separate button for reset and
acknowledgement
Alarm Priority
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Technical Challenge
► HOW was it done?▪ Create Alarming template▪ Add attributes to all templates which can alarm
• WindowName
• AlarmingEnabled
• AlarmType
▪ Use Intouch alarm viewer controls to capture alarms▪ Use owning object scripts to populate graphics▪ Link windows to alarms
Effective alarm annunciation and navigation
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