®®

AccuGrade Systemsfor Motor Graders AccuGrade Cross Slope

AccuGrade SonicAccuGrade LaserAccuGrade GPSAccuGrade ATS

Machine CompatibilityMachine Model 12H, 14H, 16H, 120H, 135H,

140H, 143H, 160H, 163H

AccuGrade®

Grade Control Systemfor Motor Graders

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AccuGrade Grade Control System for Motor GradersAccuGrade Grade Control Systems simplify grading, improve accuracy, increase productivity,minimize material usage, and lower operating costs.

Fine grade with greater accuracy andcontrol with AccuGrade technologysolutions for motor graders. AccuGradebegins with the basic cross slope system.System flexibility allows elevation control tobe combined with cross slope control to meet awide range of site-specific grade requirements.

• AccuGrade Cross Slope – cross slope control• AccuGrade Sonic – 2D elevation control• AccuGrade Laser – 2D elevation control• AccuGrade GPS – 3D elevation control• AccuGrade ATS – 3D elevation control

Features and Benefits

AccuGrade delivers a wide range ofcustomer benefits designed to: increaseoperator efficiency and productivity,improve accuracy, reduce materialcosts, reduce surveying and labor costs,and lower overall operating costs. pg. 14

AccuGrade® Sonic

The Sonic System uses ultrasonic soundwaves and a sonic elevation sensor tomeasure distance and calculate elevation.The system features automated bladeadjustments for automatic elevationcontrol and built-in vertical guidanceindicators for manual control. pg. 7

AccuGrade® Cross Slope

The Cross Slope System uses threemachine-mounted sensors to calculatecross slope of the blade. The systemcombines automated controls withmanual elevation adjustments toachieve desired cross slope. pg. 6

AccuGrade® Ready Option (ARO)Machine

The ARO machine simplifies systeminstallation and reduces machinedowntime. The AccuGrade system isdesigned and integrated into the machinesystems and controls to optimizeperformance and reliability. pg. 4

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AccuGrade® ATS

The ATS System uses an AdvancedTracking Sensor (ATS) with targetrecognition to track a machine anddetermine precise blade positioning.The system features fully automatedblade adjustments for automaticelevation control. pg. 12

AccuGrade® GPS

The GPS System uses Global PositioningSystem (GPS) satellites to determineprecise blade positioning. The systemfeatures fully automated bladeadjustments for automatic elevationcontrol, and vertical and horizontalguidance light bars for manual control.pg. 10

AccuGrade® Laser

The Laser System leverages lasertechnology to create an accurate gradeelevation reference over the work area.The system features automated bladeadjustments for elevation controlwith tight tolerances and built-inelevation/grade display indicatorsfor manual control. pg. 8

AccuGrade for Motor Graders.Caterpillar® is helping customersrevolutionize the way they move materialwith new technology solutions forearthmoving machines. Solutions thatprovide greater accuracy, higherproductivity, lower operating costs,and more profitability.

The AccuGrade System is designed andintegrated into the machine and hydraulicsystems to create an automatic bladecontrol system that allows operatorsto grade with complete accuracy.

The system uses intelligent, machine-mounted sensors to calculate preciseblade slope and elevation information.

The integrated electrohydraulic valvecontrol module uses information receivedfrom the sensors to make automaticadjustments to the blade. Dependingon the configuration of the AccuGradeelevation control system (single or dualcontrol), the system allows the operatorto select which side of the blade tocontrol – right, left, or both sides.

Automatic blade control allowsoperators to improve efficiency andproductivity by achieving grade fasterand in fewer passes than ever before,reducing the need for traditional surveystakes or grade checkers.

AccuGrade Ready Option (ARO)Machine. The factory ARO machinemakes system installation and setupquick and easy and optimizesperformance and reliability.

• Hydraulic control systems areintegrated into the machine hydraulicsfor maximum performance anddependability.

• AccuGrade controls are integratedinto the machine controls and leversfor reliable operation and precisecontrol.

• A valve control module deliversprecise, automatic control of theblade functions.

• A power module provides clean,filtered DC power to all systemcomponents.

• Wiring harnesses and cables arerouted during assembly for improvedwear protection and better reliability.

• System is designed to withstandvibration for long life in ruggedworking environments.

• Safety interlock feature is built in foradded protection during automatedoperation.

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The ARO machine integrates the AccuGrade system into the machine systems and controlsto optimize performance, reliability and productivity.

AccuGrade® Ready Option (ARO) Machine

Plug and Play Capability. The systemuses a Controller Area Network (CAN)designed for plug-and-play capability.This allows components to be quicklyand easily added or removed. Commonconnectors provide a flexible system,fully upgradeable from single cross slopeto dual elevation control. Moving theadd-on systems from one machine toanother is easy. Simply mount thecomponents, connect, calibrate, andthe system is ready to operate.

Applications. AccuGrade® is designedfor a wide range of constructionearthwork applications, from bulk earthmoving with high production rates tofinish grading with tight tolerances.Field-proven and versatile, the two-dimensional grade control systems areideal for fine grading of roads requiringprecise crown work, and sites with flatsurfaces, single slopes and dual slopes,such as building pads, parking lots, roadsand highways. The three-dimensionalsystems are ideal for complex 3D designs,such as golf courses and roads withsuper elevations.

System Flexibility. The basic systemprovides cross slope control. The operatorselects which side of the blade to activatefor automatic control and controlselevation manually.

When combined with AccuGradeelevation control technologies, the systemprovides automatic elevation control toone or both sides of the blade. The operatorcan choose any combination of control tomeet specific job requirements.

• Cross Slope

• Laser/Cross Slope

• Dual Laser

• Sonic/Cross Slope

• Dual Sonic

• Sonic/Laser

• GPS/Cross Slope

• Dual GPS

• ATS/Cross Slope

AccuGrade Technologies.

• AccuGrade Cross Slope –2D cross slope control

• AccuGrade Sonic – single or dual,2D elevation control

• AccuGrade Laser – single or dual,2D elevation control

• AccuGrade GPS – single or dual,3D elevation control

• AccuGrade ATS – dual,3D elevation control

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Flat Plane

Single Slope

Dual Slope

Operation. AccuGrade Cross Slope is agrade control system designed to controlsurface cross slope. Machine-mountedsensors are used to calculate necessaryblade slope positioning to achievedesired cross slope of the surface.The system makes automatic adjustmentsto the left or right lift cylinder, typicallyperformed by the operator. AccuGradeCross Slope delivers all the informationthe operator needs to quickly and easilyspread or cut material at the correctcross slope to the in-cab display.The operator can select which sideof the blade to control automaticallyand swap direction on the returnpass without readjusting the settings.Elevation is controlled manually bymatching grade, or automatically byadding an elevation control device.

Cross Slope System. The basic crossslope system automatically controls theslope of the blade to maintain desiredsurface cross slope.

Cross Slope with Elevation Control.AccuGrade Cross Slope can be combinedwith one or more of the AccuGradeelevation control technologies, such asAccuGrade Sonic, AccuGrade Laser,AccuGrade GPS, or AccuGrade ATSfor automatic control of elevation andcross slope.

Machine-Mounted Sensors. AccuGradeCross Slope uses three machine-mountedsensors – a blade slope sensor, mainfallsensor, and rotation sensor – to calculatenecessary blade adjustments to achievedesired cross slope of the surfaceperpendicular to the direction of travel.

• Blade Slope Angle Sensor. The bladeslope angle sensor is mounted at theback of the circle. It is used to measurethe slope of the blade.

• Mainfall Sensor. The mainfall sensoris mounted to the machine frame orchassis. It measures pitch of the machine,which is used to calculate the crossslope. This is the same type of sensorused to measure blade slope angle.

• Blade Rotation Sensor. The rotationsensor is mounted on the hydraulichydra-valve swivel and measures circlerotation or blade rotation to calculatecross slope.

System Accuracy. The cross slopesystem offers selectable accuracies formatching tolerances to specific gradeand application requirements.

Applications.

• New-road construction

• Road maintenance

• Road ditches

• Embankments

• Sports fields

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AccuGrade® Cross SlopeCombines automated controls with manual adjustments to achieve desired cross slope.

Operation. AccuGrade Sonic is a gradecontrol system designed to controlsurface elevation. The sonic systemuses an ultrasonic sensor to maintainthe blade at the same relative verticaldistance to an external reference,such as a string line or curb and gutter.The system makes automatic elevationadjustments typically performed bythe operator when in cross slope onlycontrol. The operator simply steers themachine to maintain the sensor over theexternal reference.

Single Sonic System. When combinedwith AccuGrade Cross Slope, the singlesystem provides automatic bladeadjustments to one side of the bladefor automatic control of elevation andcross slope.

Dual Sonic System. When two sonicsensors are used, the system providesautomatic elevation control to eitherside of the blade. The system typicallyuses only one sensor at a time.This allows the operator to controlwhich side of the blade to controland change direction withoutrelocating sensors.

Sonic Sensor. The ultrasonic elevationsensor is secured to an L-shaped polethat can be mounted above either endof the blade. The sensor locks onto andtraces a string line, previous pass, curband gutter, existing road surface, orpreviously cut ground via ultrasonic

sound waves. A sound pulse is emittedfrom the sonic sensor to the physicalreference. The sound wave is bouncedback to the sensor, which measuresthe elevation. The sensor matchesthe physical reference; therefore,external reference accuracy caneffect system accuracy.

Grade Display. The sonic displayfunctions as a stand-alone grade displayand provides visual feedback to theoperator. The grade display is locatedon the front panel of the sonic sensorand shows where the blade is relativeto grade. Amber LED arrows indicate“above grade” and “below grade”;green indicates “on-grade”.

In-Cab 2D Display. The in-cabdisplay/control box delivers all systeminformation to the cab. Grade displayindicators provide vertical guidance tothe operator and indicate which directionto move the blade to achieve grade.The monitor numerically displayscut/fill requirements.

Applications.

• New road construction

• Highway maintenance

• Airport runways

• Building pads

• Road ditches

• Embankments

• Indoor applications

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AccuGrade® SonicUltrasonic sound waves calculate elevation from a physical reference point, such asa stringline, curb or gutter, to maintain elevation.

Operation. AccuGrade Laser is anelevation control system designed forprecise grade control with tight tolerancesusing a laser transmitter and receiver.

A laser transmitter is set up on the worksite and creates a constant grade referenceover the work area. A digital laserreceiver is mounted on the machine andsenses the laser signal as the machinemoves across the work site.

The system captures elevationinformation and calculates the bladeadjustments necessary to achieve grade.The system makes automatic elevationadjustments typically performed by theoperator and provides automatic bladecontrol to one or both sides of the blade.The operator simply steers the machine.The system also calculates cut/fillrequirements for manual blade control.

Single Laser System. When combinedwith AccuGrade Cross Slope, the singlelaser system provides automatic bladeadjustments to one side of the bladefor automatic control of elevation andcross slope.

Dual Laser System. When two laserreceivers are used, the system providesautomatic elevation control to bothsides of the blade for fine grading withtighter tolerances.

Laser Transmitter. A laser transmitteris mounted on a tripod so the laserbeam can rotate unobstructed above themachine. The laser transmits a plane oflight above the work area, which allowsseveral machines to work effectively inany direction using one laser transmitter.

Laser Receiver. A digital laser receiveris mounted on an electric mast abovethe cutting edge and is used to detectthe laser beam. The receiver picks upthe position of the laser’s referenceplane position relative to finish gradeand measures height deviation fromthe on-grade location to the laserbeam strike. The receiver sends bladeposition information back to the systemto calculate necessary adjustments.A full 360 degree laser detection rangeallows the receiver to pick up the lasersignal from any direction on the worksite while the machine is working.

Electric Mast. An electrically adjustabletelescopic mast is used for mounting thelaser receiver above the blade’s cuttingedge. A mast riser is used to raise themast above the drawbar circle. The mastis powered by an electric motor, whichallows the operator to raise and lowerthe mast from inside the cab to preciselyposition the receiver above the cab forunobstructed laser reception.

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A rotating laser creates a grade elevation reference plane over the work area to maintainprecise elevation control.

AccuGrade® Laser

In-Cab 2D Display. The in-cab display/control box with easy-to-read gradeindicators and elevation display deliversall system information to the cab for easyviewing by the operator. Simple controlsoffer easy set-up, operation and accessto system menus, allowing the operatorto focus on productivity. Grade indicatorsprovide vertical guidance to the operatorand indicate which direction to movethe blade to achieve grade. The monitordisplays numeric cut/fill requirementsfor manual control.

Controls. System controls are integratedinto the machine controls and levers foreasy access and control. Push buttonoperation allows the operator to easilyswitch from manual mode, for roughgrading, to automatic mode, for finegrading.

1) Automatic/Manual Mode Button.Allows the operator to toggle betweenautomatic and manual mode. In automaticmode, the system automatically controlsblade elevation adjustments. In manualmode, the operator manually controlsthe blade, while using cut/fill informationon the in-cab display and grade indicatorsto guide blade movements.

2) Remote Offset Switch. Allows theoperator to set elevation offsets at apreset distance from the design plan tooptimize cutting depth in various soilconditions or accommodate sub basefill requirements.

Applications.

• Flat Planes

• Single Slopes

• Dual Slopes

• Cross Slopes

• Building Pads

• Parking Lots

• Sports Fields

• Indoor Applications

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Flat Plane

Single Slope

Dual Slope

Operation. AccuGrade GPS usesadvanced Global Positioning System(GPS) technology to deliver preciseblade positioning information to the cab.Using machine-mounted components,an off-board GPS base station and RealTime Kinematic (RTK) positioning,GPS provides the information necessaryfor the system to accurately determineblade positioning with centimeterlevel accuracy.

AccuGrade GPS computes the positioninginformation on the machine, comparesthe position of the blade relative to thedesign plan and delivers that informationto the operator via an in-cab display.Information such as: blade elevation;how much cut/fill is necessary to achieve

grade, visual indication of the blade’sposition on the design surface and agraphical view of the design plan withmachine location.

AccuGrade GPS puts all the informationthe operator needs to complete the jobin the cab, resulting in a greater level ofcontrol. Vertical and horizontal guidancetools visually guide the operator todesired grade.

Automated features allow the hydraulicsystem to automatically control bladeadjustments to move the blade to grade.The operator simply uses the light barsto steer the machine for consistent,accurate grades and slopes resultingin higher productivity with less fatigue.

Single GPS System. When combinedwith AccuGrade Cross Slope, the singleGPS system provides 3D grade controlacross the full width of the blade.The system uses a 3D position fromthe GPS receiver in combination withinformation from the cross slope sensorson the machine to automatically controlelevation and cross slope.

Dual GPS System. The dual AccuGradeGPS system provides 3D grade controlacross the full width of the blade.The dual GPS receiver configurationallows the system to automaticallycontrol blade adjustments for automaticcontrol of elevation and cross slope.

GPS Receiver. A GPS receiver ismounted on a mast above the cuttingedge. GPS satellite signals are receivedby the GPS receiver to generatea 3D position. This information,in conjunction with machine dimensioninformation, is used to determine theprecise horizontal and vertical positionof the blade in real-time.

Mast. A rugged aluminum mast is usedfor mounting the GPS receiver abovethe blade’s cutting edge for optimumGPS satellite reception.

Radio. The communications radio ismounted on the cab of the machineto ensure maximum signal reception.The radio receives real-time CompactMeasurement Record (CMR) datafrom the GPS base station radio forcalculating high-accuracy GPS positions.

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Global Positioning System satellites provide precise location information for elevationcontrol with centimeter level accuracy.

AccuGrade® GPS

Radio broadcast frequencies work inall weather conditions. This allowsAccuGrade GPS to accurately controlblade operation in fog, dust and at night.

In-Cab 3D Display. The in-cab graphicaldisplay/control box with keypad allowsthe operator to interface with the systemusing push buttons and a color monitor.As the machine operates the operatorcan view information in real-time, suchas machine location, blade position andelevation relative to the design plan.The system uses 3D design files that arestored on a compact flash data card andinserted into a slot below the keypad.

This display supports all AccuGradesystems except laser, which uses a2D display/control box.

Light Bars. Three light bars are mountedin the machine cab and provide verticaland horizontal guidance to the operator.

• Two vertical guidance light barsvisually indicate where the bladetips are relative to grade.

• The horizontal guidance light barindicates blade location relative tothe selected horizontal alignment.

Controls. The controls are located onthe levers in the cab. They are used toactivate the automatic/manual operatingmodes and increment/decrement switches.

GPS Satellites. Positioning informationfrom GPS satellites is received by theGPS base station and the machinemounted GPS receivers. The satellitesconstantly transmit their positions,identities and times of signal broadcasts.

GPS Base Station. The GPS base stationis located within radio range of thework site. It consists of a GPS receiver,GPS antenna and radio. The horizontalposition (latitude, longitude) and thevertical position (height) of the basestation are fixed to known referencepoints. The base station receivesinformation from the GPS satellites.This information, along with the basestation’s known position is sent to themachine via the communication radioand is used by the machine’s GPSreceivers to calculate centimeter levelaccuracy positioning.

3D Design Software. Flat and slopingplanar surface design files can be createdon board the machine. More complexdesigns require 3D design software.Typically, engineering and surveyingfirms create complex 3D site designs.

Office Software. The office softwaremanages and converts engineeringsurvey data for use in machine format.It is the interface between the machinesystem, site managers and designengineers. Design data is exportedfrom the office software onto a datacard for use by the AccuGrade system.

Trimble® SiteVision™ Office is therecommended software for managingand converting design files.

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Operation. AccuGrade ATS is a high-accuracy dynamic tracking system thatuses an Advanced Tracking Sensor(ATS) to track a machine and monitorblade positioning. An ATS instrumenton the work site is used to track a target,which is mounted on the blade of themachine, to determine precise 3Dpositioning.

Active target technology allows thesystem to reliably lock onto and trackthe intended target. This ensures thecorrect machine is being tracked andeliminates false lock-ons to otheractive machine targets, survey crews,or reflective surfaces. Built-in searchintelligence allows the system toquickly search for and find the targetwhen the lock is lost due to a passingvehicle or other interruption.

The ATS instrument continuouslymeasures the target’s position andtransmits real-time positioning datato the operator via the in-cab display,which shows the exact position of theblade in relation to the design.

The system combines the position ofthe target with the known position ofthe instrument, machine measurementsand sensor outputs to calculate precisepositioning of the blade tips. The systemuses the positioning data to calculatedesired elevation and cross slope.Cut and fill values are computed bycomparing the position of the bladewith the design file. The system makesautomatic blade adjustments typicallyperformed by the operator and providesautomatic blade control to one or bothcutting edge tips.

AccuGrade ATS puts the informationthe operator needs to complete the jobin the cab. The operator simply steersthe machine to achieve fine gradesurfaces with high-precision accuracy.

ATS System. When combined withAccuGrade Cross Slope, the ATSsystem provides automated bladeadjustments to one or both sides ofthe blade for automatic control ofboth elevation and cross slope.

ATS Instrument. The ATS instrumentis a robotic total station that makeshigh-precision measurements of theazimuth, altitude and distance to thetarget. Specially designed servomotorswork with the tracking software toallow the instrument to track a targetmoving at typical machine speeds. If thetarget is lost, the instrument predicts thespeed the target is moving so it canrelocate the target.

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Advanced Tracking Sensor (ATS) tracks blade positioning and provides precise elevationadjustments for fine grade control.

AccuGrade® ATS

ATS Target. An ATS target is mountedon an electric mast above the motorgrader cutting edge. The target hasan LED, which is the target for thetracking system, and a prism, whichis the target for the electronic distancemeasuring (EDM) system. The prismand LED must be in perfect verticalalignment, so the instrument canlocate and track the target, andmeasure the distance.

Electric Mast. An electrically adjustabletelescopic mast is used for mounting thetarget above the blade’s cutting edge.A mast riser is used to raise the mastabove the drawbar circle. The mast ispowered by an electric motor, whichallows the operator to raise and lowerthe mast from inside the cab for precisepositioning of the target above the cabfor unobstructed ATS signal reception.

Radio. Two communications radios areused to form a radio link between theATS instrument and the machine.The radio on the ATS instrument isused to send target position informationto the radio on the machine. The radiolink also allows the operator to sendoperation commands from the AccuGradesystem on the machine back to theATS unit.

In-Cab 3D Display. The in-cab graphicaldisplay/control box with keypad allowsthe operator to interface with the systemusing push buttons and a color monitor.As the machine operates, the operatorcan view information in real-time, suchas machine location, blade position andelevation relative to the design plan.The system uses 3D design files that arestored on a compact flash data card andinserted into a slot below the keypad.

Applications. Ideal for producing fineor finished grade surfaces.

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Increases Productivity and Efficiency.

• Increases productivity by up to 50%

• Reduces guesswork and costlyrework by moving dirt right thefirst time

• Reduces survey costs up to 90%

• Increases material utilization

• Reduces operating costs

• Extends the work day

Worksite Safety.

• Removes grade stakers and checkersfrom the worksite and away from theheavy equipment

Assists with Labor Shortage.

• Reduces labor requirements and costs

• Customers can get the job donemore quickly and efficiently

• Reduces need for staking and gradecheckers

• Empowers operator and improvesoperator confidence by deliveringgrading information to the cab

Improves Employee Satisfactionand Retention.

• In-cab display brings elevationcontrol to the cab

• Empowers operator with real-timeresults

• Real-time feedback on progressincreases job satisfaction, eliminatesguesswork and reduces operator stress

• Improves operator skills and takesperformance to the next level

• Investing in the latest technologyleads to a sense of value and trustin the operator

Increases Equipment Versatility.

• Plug-and-play connections allowfast, easy conversion from crossslope, to sonic, to laser grade controlsystem, to manual control

• Provides consistency and accuracy,turning your production machineinto a fine grading machine

Integrated into Cat® Machines.

• Proven, optimized on-boardelectronics and hydraulics systems

• Components designed into machineto maximize reliability

• Integration into cab and controlsincreases ease of use

• Safety interlock (park brake, systemhealth, idle time) increases safety

• Cat Dealer Network providesunmatched service and support

Customer Support. For more than25 years, Caterpillar has been providingelectronic and electrical componentsand systems for the earthmovingindustry – real world technologysolutions that enhance the value ofCat products, making customers moreproductive and profitable. Your CatDealer is ready to assist you withmatching machine systems to theapplication and obtaining responsible,knowledgeable support.

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Features and BenefitsAccuGrade® is easy to use and delivers a wide range of customer benefits.

Traditional Grading

Grading with AccuGrade Laser

15AccuGrade Grade Control System for Motor Graders specifications

Angle Sensor

Working range 45ºElectrical input 9 to 32V DCNetwork connector 6-pinReverse voltage protection to 36V DCLoad dump protected ISO 7637 compliantHumidity 100%Sealing IP68 sealed to

34.48 kPa (5 psi)Operating temperature –40°C to 85°C

–40°F to 185°FStorage temperature –40°C to 100°C

–40°F to 212°FHeight 68 mm 2.7 inWidth 93 mm 3.7 inLength (with connector) 104 mm 4.1 inWeight 0.8 mm 1.8 in

Sonic Tracer

Detection range 300 to 1300 mm Detection position Linear, within 1 mmGrade display LED indicatorsElectrical input 10 to 30 VDCInput connector 6-pin, bulkheadOperating temperature –28°C to 70°C

–19°F to 158°FStorage temperature –34°C to 85°C

–30°F to 185°FTemperature compensation ThermistorHumidity 90%Sealing Water resistant Emissions and susceptibility CE compliant, ISO 13766Height 165 mm 6.5 inDiameter 76 mm 3 inWeight 0.4 kg 0.9 lb

AccuGrade Systems

for Motor Graders AccuGrade Cross SlopeAccuGrade SonicAccuGrade LaserAccuGrade GPSAccuGrade ATS

Machine Compatibility

Machine Model 12H, 14H, 16H, 120H,135H, 140H, 143H, 160H, 163H

Blade Rotation Sensor

Working range ± 160°Network connector 6-pin, bulkheadElectrical input 9 to 32V DCReverse voltage protection to 36V DCLoad dump protected ISO 7637 compliantHumidity 100%Sealing IP68 sealed to

34.48 kPa (5 psi)Operating temperature –40°C to 85°C

–40°F to 185°FStorage temperature –40°C to 100°C

–40°F to 212°FLength 120 mm 4.7 inWidth 135 mm 5.3 inDepth 49 mm 1.9 inWeight 1 kg 2.2 lb

16 AccuGrade Grade Control System for Motor Graders specifications

Electric Mast

Position repeatability ± 1 mmTypical speed 30 mm/sec (1.2 in/sec)Operation 12 and 24VOperating temperature –29°C to 60°C

–20°F to 140°FStorage temperature –40°C to 80°C

–40°F to 176°FHumidity 100%Sealing IP54 sealedEmissions and susceptibility CE compliant, exceeds

ISO 13766Electrical input 9 to 32V DCNetwork connector 10-pinInput connector 6-pinHeight retracted 1640 mm 5 ft 5 inHeight extended 2900 mm 9 ft 7 inBase diameter 240 mm 9.4 inWeight 25 kg 55 lb

In-Cab 3D Display/Control Box

Display screen 140 mm (5.5 in) QVGA,320 � 240 pixel LCD

Electrical input 9 to 32V DCNetwork connector 9-pinMemory drive Compact flashOperating temperature –30°C to 62°C

–22°F to 143°FStorage temperature –30°C to 62°C

–22°F to 143°FHumidity 95%Width 180 mm 7.1 inHeight 228 mm 9 inWeight 2.72 kg 6 lbDepth 89 mm 3.5 in

In-Cab 2D Display/Control Box

Display screen LCD, 128 � 64 pixel,LED backlit

On-grade indicator GreenAbove/below grade indicator AmberOperating temperature –29°C to 60°C

–20°F to 140°FStorage temperature –40°C to 80°C

–40°F to 176°FHumidity 100%Sealing IP54 sealedEmissions and susceptibility CE compliant, ISO 13766Electrical input 9 to 30V DC Input connector 6-pinNetwork connector 6-pinRemote switch connector 6-socketData connector 9-socketLength 295 mm 7.7 inWidth 130 mm 5.1 inDepth 102 mm 4 inWeight 1.4 kg 3 lb

Laser Receiver

Detection angle 360ºDetection range 267 mm 10.5 inTransmitter speed 270 to 1,320 rpmGrade display LED grade indicatorsOperating temperature –29°C to 60°C

–20°F to 140°FStorage temperature –40°C to 80°C

–40°F to 176°FSealing IP68 sealed to

34.48 kPa (5 psi)Emissions and susceptibility CE compliant, ISO 13766Electrical input 9 to 32V DCNetwork connector 6-pinHeight 305 mm 12 inWidth 152 mm 6 inDepth 60 mm 2.4 inWeight 1.6 kg 3.5 lb

17AccuGrade Grade Control System for Motor Graders specifications

ATS Target

Working range 750 m 2,460 ftNetwork connector 6-pinElectrical input 10.5 to 35V DCLength 173 mm 6.75 inLength (with shockmount) 260 mm 10.25 inDiameter 105 mm 4.15 inWeight 1.06 kg 2.4 lbWeight (with shockmount) 2.5 kg 5.5 lb

Power Control Module

Electrical input 9 to 32V DCLoad dump protection ISO 7637 compliantOver-current protection 15 ampsOutput 3 circuits, 15-ampOperating temperature –40°C to 71°C

–40°F to 160°FStorage temperature –55°C to 85°C

–67°F to 185°FHumidity 100%Sealing IP68 sealed to

34.48 kPa (5 psi)Emissions and susceptibility CE compliant, ISO 13766Input connector 8-pinOutput connector 8-socketHeight 64 mm 2.5 inWidth 89 mm 3.5 inLength 213 mm 8.4 inWeight 1 kg 2.2 lb

GPS Receiver

Horizontal accuracy 20 mm .78 inVertical accuracy 30 mm 1.2 inOperating range Up to 10 km (6.2 miles)Network connector 16-pinElectrical input 9 to 32V DC Operating temperature –40°C to 70°C

–40°F to 160°FStorage temperature –50°C to 85°C

–67°F to 185°FHeight 147 mm 5.8 inWidth 232 mm 9.1 inDepth 251 mm 9.9 inWeight 3.8 kg 8.3 lb

Light Bars

Input connector 4-pinOperating temperature –40°C to 85°C

–40°F to 185°FStorage temperature –40°C to 100°C

–40°F to 212°FSealing IP56 protectedHeight 174 mm 7 inWidth 53 mm 2 inDepth 31 mm 1.2 inWeight 0.22 kg 0.5 lb

Communications Radio

Operating range Up to 10 km (6.2 miles)Technology Spread spectrumData rate High speedOperating temperature –55°C to 70°C

–67°F to 158°FStorage temperature –40°C to 70°C

–40°F to 158°FHumidity 100%Input connector 8-pinHeight 216 mm 8.5 inWidth 86 mm 3.4 inLength 260 mm 10.3 inWeight 0.9 kg 2 lb

18 AccuGrade Grade Control System for Motor Graders specifications

AccuGrade® SystemsNote: Displays and communications radios must be ordered separately from system kits.

Power Module

Sonic Tracer(s) Sonic Tracer

2) Single Sonic System* Dual Sonic System*

Dual Laser System*

Laser Receiver Electric Mast(s)Laser Receiver(s)

ARO Machine

*Requires Cross Slope System

1) Cross Slope System

Mainfall Sensor Crossfall Sensor Rotation Sensor 2D Display/Control Box

3) Single Laser System*

Electric Mast

AccuGrade Ready Option (ARO) Machine

4) Single GPS System* Dual GPS System*

Target

5) ATS System*

Electric Mast 3D Display/ Control Box

Communications Radio

3D Display/Control Box

3D Display/Control Box

Communications Radio

Communications Radio

Mast Mast(s)GPS Receiver GPS Receiver(s)

19AccuGrade Grade Control System for Motor Graders specifications

AccuGrade® System KitsStandard equipment may vary. Consult your Caterpillar dealer for details.

3D Kits:AccuGrade GPS Kits

3D Display KitIn-Cab 3D Display, carrying caseBracketWiring Harness

Communications RadioSingle GPS

GPS Receiver, carrying caseRigid MastShock Mounting BracketAngled Mast RiserAdjustable Angle BracketLight Bars (3)Coiled Cable

Dual GPSGPS Receiver (2), carrying caseRigid Mast (2)Shock Mounting Bracket (2)Angled Mast Riser (2)Adjustable Angle Bracket (2)Light Bars (3)Coiled Cable (2)

AccuGrade ATS Kits3D Display Kit

In-Cab 3D Display, carrying caseBracketWiring harness

Communications RadioATS Target, carrying caseTarget Mounting CollarElectric MastShock Mounting BracketStraight Mast RiserAdjustable Angle BracketCoiled Cable

AccuGrade Ready Option (ARO) MachineWeldmentsWiring HarnessHydraulic ValvesPlumbingElectronic Control ModuleRemote Switches

2D Kits:2D Display Kit

In-Cab 2D DisplayBracketWiring Harness

AccuGrade Cross Slope KitBlade Slope SensorMainfall SensorRotation SensorSensor BracketsPower ModuleMounting Hardware

AccuGrade Sonic KitsSingle Sonic

Sonic Tracer, carrying caseL-PoleMounting BracketCable

Dual SonicSonic Tracer (2), carrying caseL-Pole (2)Mounting Brackets (2)Cables

AccuGrade Laser KitsSingle Laser

Laser Receiver, carrying caseElectric MastShock Mounting BracketStraight Mast RiserAdjustable Angle BracketCoiled Cable

Dual LaserLaser Receiver (2), carrying caseElectric Mast (2)Shock Mounting Bracket (2)Straight Mast Riser (2)Adjustable Angle Bracket (2)Coiled Cable (2)

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© 2006 CaterpillarAll Rights Reserved

Printed in U.S.A.

Materials and specifications are subject to change without notice.Featured machines in photos may include additional equipment.

See your Caterpillar dealer for available options.

CAT, CATERPILLAR, AccuGrade, their respective logos and “Caterpillar Yellow,” as well as corporate and product identity used herein, are trademarks

of Caterpillar and may not be used without permission.AEHQ5601-01 (1-06)

AccuGrade® Grade Control System for Motor Graders