D rives & C ontrols S ervices, Inc. Quality Mining Services AccuWeigh Production Monitoring System ™

Drives & Controls Services, Inc.Quality Mining Services

AccuWeighProduction Monitoring System ™

Drives & Controls Services, Inc.

• Electrical Troubleshooting• Electrical Tuneups & Audits• Static Motor Field Exciters• Static Generator Field Exciters• Excavator Startups• PLC Modifications• Boom Tightline Systems• Excavator Data Acquisition Systems• Dragline/Shovel Payload Systems

Offices

USA

• Tyler, Texas

•Bogata, Texas

•Heath, Texas

•Henderson, Texas

•Jasper, Alabama

•Montgomery, West Virginia

•Tornado, West Virginia

•Casper, Wyoming

•Gillette Wyoming

•Dubois, Wyoming

Edmonton, Alberta, CANEmerald, Queensland, QLDMackay, Queensland, QLD

AccuWeigh™ Introduction

• Real-time Access to Information – Increase Productivity– Reduce Maintenance– Prevent Overloads

PLC Based

• Integrated directly with machine control system… NO BLACK BOXES

• No proprietary equipment• “Off-the-Shelf” hardware

– Industrial durability– High Availability– Low Maintenance Training – Simplified Troubleshooting

A-B PLC (PLC5)

A-B PLC (SLC500)

Unprecedented Accuracy

• 20 parameters are measured and stored on a cycle or truck basis

• Sampled at 20-50 times a second• Error correction

– Tightline– Acceleration– Motor field variation– Loop Unbalance

• Highly accurate position resolvers are more accurate and durable than older encoder technology

Position Resolver

Flexible Operator Interface

• Any PLC interface terminal• AccuWeigh™ standard panel

– PC touch screen using RSView– 12 Inch VGA– Readable in direct sunlight

Easy Access to Information

• Data is collected and stored in a non-proprietary database– Retrieved manually from machine– Optional- telemetry to mine office

• “Data Packet” provided to mine dispatch systems

Sample Block Diagram

How It Works

Cycle Detection

Cycle Detection

PayloadWeighingPayload

Weighing

Write ToDatabaseWrite ToDatabase

Cycle Detection

Bucket DumpBucket Dump

Dig DetectionDig Detection

Hoist PositionHoist Position

Hoist or Drag Torqueis High

Hoist or Drag Torqueis High

Swinging to DumpSwinging to DumpSwing Speed (shovel)Hoist Speed (dragline)Swing Speed (shovel)Hoist Speed (dragline)

Weigh LoadWeigh Load

Bucket DumpBucket Dump

Swing Back to CutSwing Back to Cut

Bucket in Dump Zone or Dipper Trip

Bucket in Dump Zone or Dipper Trip

DRAG/CROWD POS.

Payload Weighing

HOIST POSITIONDRAG/CROWD

POSITION

HOIST POSITIONDRAG/CROWD

POSITION

HOISTMOTOR AMPSMOTOR FIELD

HOISTMOTOR AMPSMOTOR FIELD

HOIST ROPE PULL

LOTS OF TRIGONOMETRY

WEIGHT ON ROPEVERTICAL COMPONENT

WITH DRAG/CROWD INFLUENCE

WEIGHT ON ROPEVERTICAL COMPONENT

WITH DRAG/CROWD INFLUENCE

DRAG/CROWD POSITION COMPENSATIONDRAG/CROWD POSITION COMPENSATION

HOIST VELOCITYHOIST VELOCITYACCELERATION COMPENSATIONACCELERATION COMPENSATION

DRIVETRAIN EFFICIENCY CORRECTIONDRIVETRAIN EFFICIENCY CORRECTION

SUBTRACT THE EMPTY BUCKET WEIGHTSUBTRACT THE EMPTY BUCKET WEIGHT

SCALED WEIGHT IN POUNDSSCALED WEIGHT IN POUNDS

Write To Database

Bucket Dumped Signalfrom PLC

Bucket Dumped Signalfrom PLC

Read Data Parametersfrom PLC to PC

Read Data Parametersfrom PLC to PC

Write Data to DatabaseWrite Data to Database

Transmit Datavia TelemetryTransmit Datavia Telemetry

AccuWeigh Database

Truck Loaded Signal from Dispatch

Truck Loaded Signal from Dispatch

Write Data from PLC to Dispatch

Write Data from PLC to Dispatch

Transmit Data viaDispatch TelemetryTransmit Data via

Dispatch Telemetry

Dispatch Database

Increased Productivity

• Spot performance trends with excavators and operators– Operator Performance– Excavator Performance– Excavator Faults

• Operators receive immediate feedback from operator interface system

• Timely feedback for operators and management is essential to increasing performance and productivity

Powerful Reporting Tools

• Web Based Reporting– Viewable from a standard web browser– Can be exported to Excel– E-mail reports on a schedule– Quick-pick, one-touch reports– Custom configuration of reports

• Site specific reports available

Downtime Detection

• AccuWeigh system detects downtime and prompts operator for a reason– Productive, Down, and Delay time is

accounted for and reported in AccuWeigh Database

Alarm and Trip Reporting

• Optional alarm and trip database• Tracks time and duration of specific alarms

from PLC• Allows tracking of faults and identifies

maintenance problems and trends• Allows faults to automatically enter down

codes into machine chronology report

Blasting Effectiveness

• Tracking bucket fill energy, bucket fill time, and load weight– Allows dig index creation energy/ton that can be tracked

by time or machine location– Evaluate blasting patterns and practices

Unparalleled Support

• 24 hours - 7 days a week worldwide

• Telemetry allows upgrades and improvements to be installed remotely

• Not limited to AccuWeigh– PLC troubleshooting– Remote X-Y for regulator performance

Thank You

Drives & Controls Services, Inc.Quality Mining Services