CATERPILLAR®
`
`KENR3106-01
`December 1999
`
`~W@li®M@ ©[p)®lf@li0@[nl
`U@@liD[nl@ @[nl@ ~@]ruJ@liD[nl@
`
`PM-465 Cold Planer Caterpillar Grade
`.. & Slope Electronic Control System
`
`5ZS1=Up (Machine)
`
`----------------
`
`Page 1 of 153
`
`CATERPILLAR EXHIBIT 1053
`CATERPILLAR v. WIRTGEN
`IPR2018-01091
`
`

`

`Important Safety Information
`
`Most accidents that involve product operation, maintenance and repair are caused by failure to
`observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially
`hazardous situations before an accident occurs A person must be alert to potential hazards. This
`person should also have the necessary training, skills and tools to perform these functions properly.
`
`Improper operation, lubrication, maintenance or repair of this product can be dangerous and
`could result in injury or death.
`
`Do not operate or perform any lubrication, maintenance or repair on this product, until you have
`read and understood the operation, lubrication, maintenance and repair information.
`
`Safety precautions and warnings are provided in this manual and on the product. If these hazard
`warnings are not heeded, bodily injury or death could occur to you or to other persons.
`
`The hazards are identified by the "Safety Alert Symbol" and followed by a "Signal Word" such as
`"DANGER", "WARNING" or "CAUTION". The Safety Alert "WARNING" label is shown below.
`
`A WARNING
`
`The meaning of this safety alert symbol is as follows
`
`Attention! Become Alert! Your Safety is Involved.
`
`The message that appears under the warning explains the hazard and can be either written or
`pictorially presented.
`
`Operations that may cause product damage are identified by "NOTICE" labels on the product and in
`this publication.
`
`Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard. The
`warnings in this publication and on the product are, therefore, not all inclusive. If a tool, procedure,
`work method or operating technique that is not specifically recommended by Caterpillar is used,
`you must satisfy yourself that it is safe for you and for others. You should also ensure that the
`product will not be damaged or be made unsafe by the operation, lubrication, maintenance or
`repair procedures that you choose.
`
`The information. specifications and illustrations in this publication are on the basis of information that
`was available at the time that the publication was written. The specifications, torques, pressures,
`measurements, adjustments, illustrations, and other items can change at any time. These changes can
`affect the service that is given to the product Obtain the complete and most current information before
`you start any job Caterpillar dealers have the most current information available. For a list of the most
`current publication form numbers available, see the Service Manual Contents Microfiche, REG1 "139F.
`
`Page 2 of 153
`
`

`

`Page 3 of 153
`
`Page 3 of 153
`
`

`

`Table of Contents
`
`Systems Operation Section
`
`General Information ................................................ 5
`Controller ................................................................ 8
`Basic Operation . . . . . . . . . . .. . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . .. .. . .. 13
`Grade Sensor Operation ....................................... 15
`Slope Sensor Operation .. . . .. . . . . .. .. . . . . .. . . . . . . . . . . . . . . .. . .. 15
`Setpoints ............................................................... 16
`Zero Cut Calibration Function ............................... 16
`Grade Offset Function .......................................... 17
`Automatic Hold Function ....................................... 17
`Sensitivity Function and Speed Function .............. 18
`Jump Function and Return to Grade Function ...... 19
`Diagnostic Operation ............................................ 20
`Modes of Operation .............................................. 22
`Electronic Control Module (Grade/Slope) ............. 29
`Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
`Sensors ................................................................. 33
`Relays ................................................................... 38
`Solenoid Valves .................................................... 39
`Alarm .................................................................... 40
`CAT Data Link ....................................................... 41
`Manual Override Control ....................................... 41
`
`Testing and Adjusting Section
`
`Testing and Adjusting
`General Information .............................................. 43
`Service Tools ........................................................ 43
`Electrical Components And Connector
`Locations ............................................................. 44
`Determining Diagnostic Codes ............................. 45
`Troubleshooting Diagnostic Codes ....................... 46
`CID 0168 FMI 03 Electrical System Voltage Above
`Normal - Test ....................................................... 48
`CID 0168 FMI 04 Electrical System Voltage Below
`Normal - Test ....................................................... 49
`CID 0254 FMI 09 CAT Data Link Abnormal Update -
`Test ..................................................................... 50
`CID 0650 FMI 02 Harness Code Incorrect - Test .. 52
`CID 0748 FMI 02 Service Door Incorrect Signal -
`Test ..................................................................... 54
`CID 0749 FMI 02 Kickback Incorrect Signal -
`Test ..................................................................... 56
`CID 0856 FMI 00 Grade Sensor (Slope) Above
`Normal Range - Test ........................................... 58
`CID 0856 FMI 01 Grade Sensor (Slope) Below
`Normal Range - Test ........................................... 60
`CID 0856 FMI 08 Grade Sensor (Slope) Abnormal
`Signal - Test ........................................................ 62
`CID 0900 FMI 03 Solenoid Valve (Left Front Raise)
`Voltage Above Normal - Test ............................... 64
`CID 0900 FMI 05 Solenoid Valve (Left Front Raise)
`Current Below Normal - Test ............................... 65
`CID 0900 FMI 06 Solenoid Valve (Left Front Raise)
`Current Above Normal - Test .............................. 67
`CID 0900 FMI 12 Solenoid Valve (Left Front Raise)
`Failed - Test ......................................................... 68
`
`3
`Table of Contents
`
`CID 0901 FMI 03 Solenoid Valve (Left Front Lower)
`Voltage Above Normal - Test ............................... 69
`CID 0901 FMI 05 Solenoid Valve (Left Front Lower)
`Current Below Normal - Test ............................... 70
`CID 0901 FMI 06 Solenoid Valve (Left Front Lower)
`Current Above Normal - Test .............................. 72
`CID 0901 FMI 12 Solenoid Valve (Left Front Lower)
`Failed - Test ......................................................... 73
`CID 0902 FMI 03 Solenoid Valve (Right Front Raise)
`Voltage Above Normal - Test······························: 74
`CID 0902 FMI 05 Solenoid Valve (Right Front Raise)
`Current Below Normal - Test ............................... 75
`CID 0902 FMI 06 Solenoid Valve (Right Front Raise)
`Current Above Normal - Test .............................. 77
`CID 0902 FMI 12 Solenoid Valve (Right Front Raise)
`Failed - Test ......................................................... 78
`CID 0903 FMI 03 Solenoid Valve (Right Front Lower)
`Voltage Above Normal - Test ............................... 79
`CID 0903 FMI 05 Solenoid Valve (Right Front Lower)
`Current Below Normal - Test ............................... 80
`CID 0903 FMI 06 Solenoid Valve (Right Front Lower)
`Current Above Normal - Test .............................. 82
`CID 0903 FMI 12 Solenoid Valve (Right Front Lower)
`Failed - Test ......................................................... 83
`CID 0904 FMI 03 Solenoid Valve (Rear Raise)
`Voltage Above Normal - Test ............................... 84
`CID 0904 FMI 05 Solenoid Valve (Rear Raise)
`Current Below Normal - Test ............................... 85
`CID 0904 FMI 06 Solenoid Valve (Rear Raise)
`Current Above Normal - Test .............................. 87
`CID 0904 FMI 12 Solenoid Valve (Rear Raise) Failed
`- Test ................................................................... 88
`CID 0905 FMI 03 Solenoid Valve (Rear Lower)
`Voltage Above Normal - Test ............................... 89
`CID 0905 FMI 05 Solenoid Valve (Rear Lower)
`Current Below Normal - Test ............................... 90
`CID 0905 FMI 06 Solenoid Valve (Rear Lower)
`Current Above Normal - Test .............................. 92
`CID 0905 FMI 12 Solenoid Valve (Rear Lower) Failed
`- Test ................................................................... 93
`CID 0906 FMI 00 Position Sensor (Left Grade) Above
`Normal Range - Test ........................................... 94
`CID 0906 FMI 01 Position Sensor (Left Grade) Below
`Normal Range - Test ........................................... 98
`CID 0906 FMI 08 Position Sensor (Left Grade)
`Abnormal Signal - Test ...................................... 102
`CID 0907 FMI 00 Position Sensor (Right Grade)
`Above Normal Range - Test .............................. 105
`CID 0907 FMI 01 Position Sensor (Right Grade)
`Below Normal Range - Test .............................. 109
`CID 0907 FMI 08 Position Sensor (Right Grade)
`Abnormal Signal - Test ...................................... 113
`CID 0919 FMI 03 Alarm Voltage Above Normal -
`Test ................................................................... 117
`CID 0919 FMI 05 Alarm Current Below Normal -
`Test ................................................................... 118
`CID 0919 FMI 06 Alarm Current Above Normal -
`Test ··································································· 120
`CID 0919 FMI 12 Alarm Failed - Test .................. 121
`CID 0922 FMI 02 Position Sensor (Auto Stop)
`Incorrect Signal - Test .......................... _. ......... _. .. 122
`CID 0923 FMI 02 Position Sensor (Service Height)
`Incorrect Signal - Test ....................................... 125
`
`Page 4 of 153
`
`

`

`4
`Table of Contents
`
`CID 0963 FMI 09 Electronic Control Module
`(Grade/Slope) Abnormal Update - Test ............. 128
`Circuit Breaker (Grade/Slope) - Troubleshoot ..... 129
`Service Height Indicator - Troubleshoot .............. 129
`Auto Stop Indicator - Troubleshoot ...................... 129
`Manual Override Control - Troubleshoot ............. 129
`Rocker Switch (Controller) - Troubleshoot .......... 131
`Push Button Switch (Controller) - Troubleshoot .. 133
`Calibration ........................................................... 135
`Position Sensor (Lett Grade) - Calibrate ............. 138
`Position Sensor (Right Grade) - Calibrate .......... 140
`Grade Sensor (Slope) - Calibrate ....................... 141
`Valve - Calibrate .................................................. 142
`Electrical Connector - Inspect ............................. 144
`Electronic Control Module (ECM) - Replace ....... 144
`Special Symbols on Readouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
`Glossary of Terms ............................................... 146
`System Schematic .............................................. 14 7
`
`Index Section
`
`Index ................................................................... 150
`
`Page 5 of 153
`
`

`

`5
`Systems Operation Section
`
`Systems Operation Section
`
`General Information
`SMCS Code: 7220
`
`i01095869
`
`:~I
`
`2(', .......
`
`Page 6 of 153
`
`

`

`6
`Systems Operation Section
`
`GRADE/SLOPE
`CONTROLLER
`
`LEFT CONSOLE
`®®®~
`
`0
`□□□□□□□□ □□□□□□□□
`
`0
`
`§§
`88888
`
`0
`
`0
`
`LEFT REAR
`
`GRADE/SLOPE
`SERVICE
`CONNECTOR
`
`RIGHT REAR
`
`OPTIONAL
`
`OPTIONAL
`
`GRADE/SLOPE
`CONTROLLER
`
`RIGHT CONSOLE
`®®®
`
`0
`□□□□□□□□ □□□□□□□
`
`§§
`88888
`~® ®®
`,1°11~1~
`
`LEFT GRADE SENSOR
`
`SONIC
`1YPE
`
`OR
`
`CONT ACTING
`TYPE
`
`RIGHT GRADE SENSOR
`SONIC
`TYPE
`
`CONT ACTING
`TYPE
`
`OR
`
`~=====~"\
`
`GRADE/SLOPE
`ELECT PO~iC
`CONT
`lvlODULE
`
`I~~[~]
`
`ii)
`)
`
`, 0 O O
`
`~ \
`·~
`MANUAL
`OVERRIDE
`CONNECTOR
`
`SLOPE
`SENSOR
`
`MANUAL
`OVERRIDE
`CONTROL
`PANEL
`
`~~ ALARlvl
`
`LEFT FRONT
`RAISE & LOWER
`SOLENOIDS
`
`RE I\R
`RAISE & LOWER
`SOLENOIDS
`
`RIGHT FRONT
`RAISE & LOWER
`SOLENOIDS
`
`GRADE/SLOPE
`ON/OFF
`SWITCH
`
`SERVICE
`HEIGHT
`SENSOR
`
`1\UTO
`STOP
`SENSOR
`
`SERVICE DOOR SIGNAL
`KICKBACK SIGNAL
`
`COMPUTERIZED
`PROFILER
`CONTROLLER
`c-rv
`
`Illustration 1
`
`g00534015
`
`Page 7 of 153
`
`

`

`7
`Systems Operation Section
`
`The grade sensors provide information regarding
`the grade to the ECM. The desired grade (setpoint)
`is established by the operator at the start of the cut.
`See Systems Operation, "Setpoints". The ECM will
`detect any deviation from the grade setpoint. The
`ECM w·111 correct the extension of the appropriate
`front leg in order to attain the grade setpoint.
`
`The system's solenoids are components of the
`electrical proportional hydraulic valves. These
`valves are for extending and retracting of each leg
`(left front, right front and rear). The ECM drives the
`solenoids in order to control the extension of each
`leg. There is a raise solenoid and a lower solenoid
`for each front leg. During automatic operating
`mode, the ECM controls the front solenoids
`automatically. However, the operator can control
`the front solenoids while the system is in manual
`operating mode or automatic operating mode.
`There is a single raise solenoid and a single lower
`solenoid for simultaneously controlling both rear
`legs. The rear legs are hydraulically connected and
`the legs work in unison. The rear solenoids are
`not controlled automatically by the ECM. The ECM
`drives the rear solenoids according to operator
`requests only The front solenoids are located on
`the front hydraulic manifold and the rear solenoids
`are located on the rear manifold.
`
`The Grade & Slope Electronic Control System
`controls the extending of each front leg in order
`to attain the desired surface profile. Operation of
`the front legs can be manual or automatic. Manual
`operation of the rear legs is provided. The system
`can function in the grade/grade control method or
`the grade/slope control method.
`
`The various components of the Grade & Slope
`Electronic Control System are shown in illustration 1.
`A brief description of the major components follows.
`
`The Electronic Control Module (ECM) is the central
`control computer of the Grade & Slope Electronic
`Control System Grade sensors, a slope sensor,
`switches and controllers deliver the necessary
`information to the ECM. The ECM produces the
`control signals that are sent to the solenoids for
`elevation of the machine. The ECM produces
`the information for the display that 1s sent to the
`controllers and the grade sensors.
`
`The controllers provide information to the operator
`and the controllers provide a way to modify the
`operation of the Grade & Slope System Each
`controller communicates with the ECM through the
`CAT data link. There can be up to six controllers on
`the Cold Planer. Controllers are usually mounted on
`the left and/or right side of the operator's console.
`Controllers can also be mounted in front of the
`cutter and/or behind the cutter on the left and
`right sides of the machine. Ground operators on
`the left and right sides of the machine could use
`these controllers. The controllers are designed to
`be movable between any of the six locations on
`the machine. The Grade & Slope System must
`be powered down with the on/off switch before
`disconnecting or connecting a controller and/or a
`sensor.
`
`The CAT data link provides a communications
`platform for the Grade & Slope System This data
`link is separate from other data links on the machine.
`
`The slope sensor provides information to the ECM
`regarding the cross slope. The term "slope" is used
`in reference to the cross slope. The desired slope
`(setpoint) is established by the operator at the start
`of the cut. See Systems Operation, "Setpoints··.
`The ECM will detect any deviation from the slope
`setpoint. The ECM will correct the extension of the
`appropriate front leg in order to attain the slope
`setpoint. When you are using the grade/slope
`control method, the control of one machine side is
`determined by the grade. The control of the other
`machine side is determined by the slope. The slope
`sensor is mounted to the frame of the machine.
`
`5
`
`Page 8 of 153
`
`

`

`8
`Systems Operation Section
`
`Controller
`SMCS Code: 1408; 7220
`
`i01095907
`
`A short length of harness and a harness connector e
`
`with 11 contacts is on the rear of the controller. The
`controller is designed so that movement to different
`locations on the machine is easy. There are six
`possible locations on the machine for mounting a
`controller. The Grade & Slope Electronic Control
`System can function with a single controller or
`numerous controllers.
`
`Description Of The Controller
`Components
`
`1. The "mode scroll" switch allows the operator to
`scroll through the different modes for the ECM.
`Pressing the "mode scroll" switch for more than
`04 seconds will initiate the mode scroll function.
`Holding the switch pressed will cause the left
`readout ( 11) to scroll through the modes of the
`ECM. To select an mode, release the "mode
`scroll" switch when the desired mode is showing
`on the left readout.
`
`The modes of the ECM are listed below:
`
`• Operating Mode
`
`• Hourmeter Mode
`
`• Beeper Mode
`
`• Units Mode
`
`• Service Mode
`
`• Configuration Mode
`
`• Calibration Mode
`
`Whenever the mode scroll function is active, the
`ability to change the elevation of the machine is
`disabled. The mode scroll function is active when
`the switch is pressed for more than 0.4 seconds.
`The machine will not raise and the machine will
`not lower when the system is not in an operating
`mode. When operating mode is selected after
`scrolling, the system will enter both sides into
`manual operating mode. See Systems Operation,
`"Modes Of Operation" for more information.
`
`2. Left "Grade Sensor Calibration" Switch And
`"Menu #1" Switch (Dual Function). This switch
`has two functions that depend on the present
`mode of the ECM. When the system is not in an
`operating mode, the switch activates the menu
`#1 function.
`
`Illustration 2
`
`Grade/Slope Controller
`
`g00534077
`
`There may be up to six Grade/Slope Controllers on the machine.
`
`(1) "Mode scroll" switch
`(2) Two functions: left "grade sensor calibration/offset" switch and
`"menu #1" switch
`(3) Two functions: right "grade sensor calibration/offset" switch
`and "menu #2" switch
`(4) Two functions: "sensitivity/speed" switch and "enter" switch
`(5) Diagnostic code indicator and Switch input indicator
`(6) Right readout
`(7) Right error indicator
`(8) Service height indicator.
`(9) Right side grade/slope switch with grade indicator and slope
`indicator
`(10) Right side automatic/manual switch with automatic indicator
`and manual indicator
`(11) Left readout
`(12) Left error indicator
`(13) "Auto Stop" indicator
`(14) left side grade/slope switch with grade indicator and slope
`Ind1cator
`(15) Left side automatic/manual switch with automatic indicator
`and manual indicator
`(16) All raise/lower switch ("Jump" switch) for the machine
`(17) Left front raise/lower switch
`(lS) Right front raise/lower switch
`C19) Rear raise/lower switch
`
`~·
`
`\:
`
`ti{
`
`Page 9 of 153
`
`

`

`When the system is in either operating mode
`and the grade control method is selected, the
`switch has the following function: When you
`press the switch for less than one second, the
`present value of the sensor is saved as the grade
`setpoint. The value is also saved as the zero cut
`reference In addition, the grade offset for the left
`side is zeroed. When you press the switch for
`more than one second, you can manually set the
`grade offset for the left side. While the switch
`is pressed, the offset can be set with the front
`raise/lower switch.
`
`When the system is in either operating mode and
`the slope control method is selected, the switch
`has the following function: When you press the
`switch the present value of the sensor is saved
`as the slope setpoint. The value on the display is
`not affected and there is no offset for the slope
`control method.
`
`The "menu #1" switch allows the operator to
`scroll to the options that may exist within the
`different modes of the ECM. The "menu #1"
`switch only allows access to modes that are
`used when the machine is not operating. Holding
`the switch pressed will cause the right readout
`(6) to scroll through the options. To select an
`option, the switch is released while the desired
`option is showing on the right readout. If there
`are not any applicable options, then activation of
`the switch is ignored. See Systems Operation,
`"Modes Of Operation" for more information.
`
`3. Right "Grade Sensor Calibration" Switch And
`"Menu #2" Switch (Dual Function). This switch
`has two functions that depend on the present
`mode of the ECM. When the system is not in an
`operating mode. the switch activates the menu
`#2 function.
`
`When the system is in either operating mode
`and the grade control method is selected, the
`switch has the following function: If the switch is
`pressed and the switch is released within one
`second, the present value of the sensor is saved
`as the grade setpoint. The value is also saved
`as the zero cut reference In addition, the grade
`offset for the right side is zeroed. When you
`press the switch for more than one second, you
`can manually set the grade offset for the right
`side While the switch is pressed, the offset can
`be set with the front raise/lower switch.
`
`When the system is in either operating mode
`and the slope control method is selected, the
`switch has the following function When you
`press and release the switch, the present value
`of the sensor is saved as the slope setpoint. The
`value on the display is not affected and there is
`no offset for the siope control method.
`
`9
`Systems Operation Section
`
`The "menu #2" switch allows the operator to
`scroll to the options that may exist within the
`different modes of the ECM. The "menu #2"
`switch only allows access to modes that are
`used when the machine is not operating. Holding
`the switch pressed will cause the right readout
`(6) to scroll through the options. To select an
`option, the switch is released while the desired
`option is showing on the right readout. If there
`are not any applicable options, then activation of
`the switch is ignored. See Systems Operation,
`"Modes Of Operation" for more information.
`
`4. "Sensitivity/Speed" Switch And "Enter" Switch
`(Dual Function). This switch has two functions
`that depend on the present mode of the ECM.
`When the system is in manual operating mode or
`automatic operating mode, the switch activates
`the sensitivity/speed function. When the system
`is not in an operating mode, the switch activates
`the enter function.
`
`The "sensitivity/speed" switch allows the operator
`to adjust the overall sensitivity of the Grade &
`Slope Electronic Control System
`
`The sensitivity/speed function is activated when
`the "sensitivity/speed" switch is pressed and
`the machine is in the manual operating mode
`or the automatic operating mode. A raise/lower
`switch is used in order to change the value
`for sensitivity/speed that is being shown on
`the readout. A machine may have two grade
`sensors and one slope sensor. Each sensor has
`a separate value for sensitivity/speed. The left
`raise/lower switch is used in order to change
`the value for the left grade sensor. The right
`raise/lower switch is used in order to change the
`value for the right grade sensor. A large value for
`sensitivity/speed corresponds to a fast response
`A small value for sensitivity/speed corresponds
`to a slower response. The grade/slope switch is
`used in order to toggle between the values for
`grade and the value for slope. The value for the
`slope can be displayed on the right readout or
`the value can be displayed on the left readout.
`The slope cannot be displayed by both sides
`at the same time.
`
`When the sensitivity/speed value has been
`properly adjusted , press the "sensitivity/speed"
`switch again in order to save the value for
`sensitivity/speed that is shown on the readout.
`See Systems Operation, "Sensitivity Function
`And Speed Function" for more information.
`
`The "enter" switch allows the operator to
`permanently save the modified values that exist
`within the different modes of ECM that are used
`when the machine is not operating.
`
`Page 10 of 153
`
`

`

`10
`Systems Operation Section
`
`5. Key/Diagnostic Code Indicator. This indicator
`has two functions: One function is the Key Test
`indicator. The other function is the Diagnostic
`Code indicator. The key test indicator function
`turns ON the Key Test indicator whenever any
`of the switches on the controller is activated.
`This function verifies that the switch inputs to the
`controller are working properly. The diagnostic
`code indicator function FLASHES the indicator
`whenever the ECM detects a fault in the system.
`Any level of diagnostic code will cause the
`indicator to flash. The key test function will take
`priority over the diagnostic code function if
`both functions are active at the same time. See
`Systems Operation, "Diagnostic Operation" for
`more information on diagnostic codes.
`
`6. Right Readout The right readout is an
`alphanumeric display with 8 characters. During
`normal machine operation, the ECM is in the
`automatic operating mode or the machine is in
`the manual operating mode. The readout shows
`a value for the right side of the machine. The
`value that is showing will be for the grade or
`the value will be for the slope. The value that is
`shown is determined by the method of control
`for the right side. The mode of the system has
`an effect on the value. When the system is in
`automatic operating mode the setpoint value
`shows on the readout When the system is in
`manual operating mode the actual value shows
`on the readout
`
`Numerous special symbols are used for the
`character on the far left on the readout in order
`to help identify the type of value that is being
`shown. The unit of measurement for the value for
`grade or the value for slope is selectable. See
`Systems Operation, "Modes of Operation, Units
`Mode" for more information.
`
`When the system is not in an operating mode,
`the right readout works in coniunction with the left
`readout. This forms an alphanumeric message
`with 16 characters that is used for showing
`information about the different modes.
`
`7. Right error indicator. During normal machine
`operation (ECM in manual or automatic operating
`mode), the right error indicator shows the status
`of the right side of the machine. The status can
`be one of the following states on grade, needs
`to be raised, and needs to be lowered. The
`error is the difference (error) between the grade
`setpoint and the actual grade, or between the
`slope setpoint and the actual slope. The Error
`equals the setpoint minus the actual value.
`
`The "ON GRADE" bar of the error indicator
`means that the height of the right side does
`not need to be changed. The actual value for
`the grade or the slope is equal to the setpoint
`value. The UP ARROW of the error indicator
`means that the right side needs to be raised
`because the actual value (grade or slope) is
`less than the setpoint value. The DOWN ARROW
`of the error indicator means that the right side
`needs to be lowered because the actual value
`(grade or slope) is greater than the setpoint
`value. The length of both arrows is related to the
`magnitude of the error. As the magnitude of the
`error increases, the length of the arrow becomes
`longer. As the error decreases, the length of
`the arrow decreases. When in the automatic
`operating mode, the system is continually
`adjusting in order to reach or maintain the
`setpoint.
`
`Note: When the machine is in the automatic
`operating mode, the error indicator should
`be observed periodically for an "ON GRADE"
`indication. The system is operating properly when
`"ON GRADE" is indicated.
`
`8. Service height indicator. The service height
`indicator illuminates when the rear legs are fully
`extended. When the rear legs are fully extended,
`the machine is at service height and the service
`height indicator is ON. The Grade & Slope
`Electronic Control System does not allow the
`front legs to be retracted when the machine is at
`service height. Lowering the rear of the machine
`beneath the service height will re-enable the
`lowering of the front When the rear legs are not
`fully extended the machine is NOT at service
`height and the service height indicator is OFF.
`
`Note: The system will automatically activate
`the auto-hold function under the following
`circumstances:
`
`• The operator changes from the manual
`operating mode to the automatic operating
`mode while the machine is at the service
`height
`
`• The machine is raised to the service height
`while the system is in the automatic operating
`mode.
`
`Page 11 of 153
`
`

`

`9. Right Side Grade/Slope Switch With Grade
`Indicator And Slope Indicator. The right side
`grade/slope switch selects the method of
`control for the right s·1de of the machine. The
`corresponding indicator (grade or slope) will be
`ON. In order to select the grade control method
`with the system in the automatic operating mode,
`the machine must have a grade sensor on the
`right side. When no grade sensor is on the right
`side, you can operate using the grade control
`method in the manual operating mode. The
`present operating mode is maintained when the
`right side grade/slope switch 1s activated. See
`Systems Operation, "Basic Operation" for more
`information.
`- 1 o. Right Side Automatic/Manual Switch With
`Automatic Indicator And Manual Indicator. The
`right side automatic/manual switch selects the
`operating mode for the right side of the machine.
`
`Automatic operating mode places the Grade
`& Slope Electronic Control System in control of
`the right front leg. The automatic indicator will
`be ON. The setpoint value (grade or slope) will
`be shown on the right readout. The right front
`raise/lower switch is used to change the setpoint
`value (grade or slope). In order to select the
`automatic operating mode, the corresponding
`sensor (grade or slope) must be installed on
`the machine.
`
`Manual operating mode places the operator in
`control of the right front leg. The manual indicator
`will be ON. The right front raise/lower switch is
`used to control the r.ight front leg. The actual
`value (grade or slope) will be shown on the right
`readout
`
`Note: If the automatic indicator is FLASHING. the
`auto-hold function for the right side is operating
`Automatic elevation control for the right front
`leg is disabled. The auto-hold function remains
`engaged until the responsible sensor returns to an
`acceptable range. The responsible sensor would
`be the right grade sensor or the slope sensor. If the
`operator changes the setpoint for either sensor. the
`auto-hold function disengages for that sensor. See
`Systems Operation, "Auto-Hold Function" for more
`information.
`
`11
`Systems Operation Section
`
`11. Left Readout The left readout is an
`alphanumeric display with 8 characters. During
`normal machine operation, the ECM is in the
`automatic operating mode or the machine is in
`the manual operating mode. The readout shows
`a value for the left side of the machine. The value
`that is showing will be for the grade or the value
`will be for the slope. The value that is shown
`is determined by the method of control for the
`left side. The mode of the system has an effect
`on the value. When the system is in automatic
`operating mode the setpoint value shows on the
`readout. When the system is in manual operating
`mode the actual value shows on the readout.
`
`Numerous special symbols are used for the
`character on the far left on the readout in order
`to help identify the type of value that is being
`shown. The unit of measurement for the value for
`grade or the value for slope is selectable. See
`Systems Operation, "Modes of Operation, Units
`Mode" for more information.
`
`When the system 1s not in an operating mode,
`the left readout works in conjunction with the right
`readout. This forms an alphanumeric message
`with i 6 characters that is used for showing
`information about the different modes.
`
`12. Left error indicator. During normal machine
`operation (ECM in manual or automatic operating
`mode). the left