AccuGrade® GPS (CD700) Caterpillar

PreStart Checks

Receivers

In order to start the system, complete the following steps:

1. Ensure that the Receivers are installed on the masts.

   Note: AccuGrade Systems that are configured for "Single GPS" have 1 Receiver. AccuGrade Systems that are configured for "Dual GPS" have 2 Receivers.

2. Ensure that the coiled cables for the Receivers and the Angle Sensor are connected properly.

   Note: AccuGrade Systems that are configured for "Single GPS" have 1 Receiver. AccuGrade Systems that are configured for "Dual GPS" have 2 Receivers.

   Note: AccuGrade Systems with dual Receivers may be configured not to use an Angle Sensor.

   If the Receivers are installed and the coiled cables are connected properly, proceed to "Startup".

   If the Receivers are NOT installed, proceed to "Connecting The Receiver".

Connecting The Receiver

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Illustration 1	g01126778
Typical illustration of an approved access system

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In order to prevent personal injury during installation and removal of the GPS receivers, use an approved access system in order to reach the mounting locations of the GPS receivers at the top of the masts. Do not climb on the blade.

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Illustration 2	g01126798
(13) Receiver (14) Mast (15) Thumbwheel on Quick Release Bracket

1. Slide one of the Receivers, with the quick release bracket attached, onto the top of the left hand mast.

Note: You must fully insert the Mast (14) into the quick-release bracket on the Receiver (13). Otherwise, the blade tip to antenna measurements will not be correct, resulting in wrong elevation guidance and construction.

2. Firmly hand tighten the thumbwheel (15) that is located on the quick release bracket.

3. Connect the ninety degree connector of one of the coiled cables for the Receiver to the connector on the Receiver.

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Illustration 3	g01127998
Typical Configuration (N-Series) (16) Connector for the right hand Receiver for AccuGrade Systems with dual Receivers. Or, connector for the Angle Sensor for AccuGrade Systems with a Single Receiver. (17) Connector for the Angle Sensor for AccuGrade Systems with dual Receivers. Or, connector for Receiver for AccuGrade Systems with a Single Receiver. (18) Connector for the left hand Receiver

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Illustration 4	g01309784
Typical Configuration (R-Series) (16) Connector for the right hand Receiver for AccuGrade Systems with dual Receivers. Or, connector for the Angle Sensor for AccuGrade Systems with a Single Receiver. (17) Connector for the Angle Sensor for AccuGrade Systems with dual Receivers. Or, connector for Receiver for AccuGrade Systems with a Single Receiver. (18) Connector for the left hand Receiver

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Illustration 5	g01309760
Typical Configuration (R-Series and T-Series) (16) Connector for the right hand Receiver for AccuGrade Systems with dual Receivers. Or, connector for the Angle Sensor for AccuGrade Systems with a Single Receiver. (17) Connector for the Angle Sensor for AccuGrade Systems with dual Receivers. Or, connector for Receiver for AccuGrade Systems with a Single Receiver. (18) Connector for the left hand Receiver

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Illustration 6	g01309788
Typical Configuration (G-Series) (16) Connector for the right hand Receiver for AccuGrade Systems with dual Receivers. Or, connector for the Angle Sensor for AccuGrade Systems with a Single Receiver. (17) Connector for the Angle Sensor for AccuGrade Systems with dual Receivers. Or, connector for Receiver for AccuGrade Systems with a Single Receiver. (18) Connector for the left hand Receiver

4. The other end of the coiled cable has a quick disconnect connector. Connect to the quick disconnect connector to the appropriate Machine connector. Refer to Illustrations 3, 4, 5, 6.

   For a dual GPS system - Connect the quick disconnect connector on the cable for the right Receiver to connector (16) that is located on the front of the radiator guard. Connect the quick disconnect connector on the cable for the left Receiver to connector (18) that is located on the front of the radiator guard.

   For a single GPS system - Connect the quick disconnect connector on the cable for the Receiver to connector (17) or connector (18) that is located on the front of the radiator guard. Connect the quick disconnect connector for the Angle Sensor to connector (16) that is located on the front of the radiator guard.

5. For AccuGrade Systems with dual Receivers, repeat Step 1 through Step 4 in order to install the right hand Receiver onto the right hand mast.

   Note: Make sure that the left Receiver is connected to the left harness connector and make sure that the right Receiver is connected to the right harness connector in order to ensure proper movement of the blade.

   Refer to Illustration 7.

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Illustration 7	g01128010

6. Connect the ninety degree connector of the coiled cable for the Angle Sensor to the connector on the Angle Sensor.

   Refer to Illustration 7.

   Note: For AccuGrade Systems with a single Receiver, the Angle Sensor will be oriented different than the Illustration. For AccuGrade Systems with dual Receivers, the Angle Sensor may not be present.

7. The other end of the coiled cable has a quick disconnect connector. Connect to the appropriate Machine connector. Refer to Illustrations 3, 4, 5, 6.

Startup

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Illustration 8	g01265965
(12) "Data Card Slot"

1. Insert your data card (25) that contains the design information into the data card slot on the Display.

2. Press the power key (6) on the Display.

   The light bars will flash. This tests that the light bars are functioning and that the light bars are configured correctly. For more information, Refer to Operation and Maintenance Manual, "Light Bar Start-Up Checks".

   The Display checks that all system components are present and that all system components are responding correctly. If there are any problems, the "Diagnostics" dialog will appear. For more information, Refer to Operation and Maintenance Manual, "Checking System Diagnostics". When the software for the AccuGrade System is loaded, and the system checks are finished, the Plan View appears.

Selecting a Design

Illustration 9	g01265962
(1) LCD (2) Soft Key Labels (3) Soft Keys (4) Escape key (5 ) "Next" key (6) Power key (7) "+" Key (8) Arrow keys (9) "-" Key (10) "OK" key (11) "Menu" key (12) "Data card slot"

Note: The software for the AccuGrade System automatically loads the last design that was used, if that design is present on the data card.

In order to select a design, complete the following steps:

1. Press the "Menu" key (11) until the "Designs" Soft Key is shown.

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Illustration 10	g01266748

2. Press the "Designs" Soft Key in order to select a design. A dialog that is similar to Illustration 10 appears.

3. In order to highlight a design, press the up arrow key or press the down arrow key.

4. Press the "OK" key (10) in order to load the design and return to the guidance views.

5. Press the "Next" key (5) in order to change the views.

   For more information on using the views, refer to the following information:

   • Operation and Maintenance Manual, "Plan View"

   • Operation and Maintenance Manual, "Profile View"

   • Operation and Maintenance Manual, "Cross Section View"

   • Operation and Maintenance Manual, "Text View"

6. Ensure that the "GPS Accuracy Mode" is suitable for the type of work that will be done. For more information, Refer to Operation and Maintenance Manual, "GPS Accuracy Mode".

7. Check that the vertical offset value is correct. The "elevation offset" method should be selected. For more information, Refer to Operation and Maintenance Manual, "Vertical Guidance".

8. Check that the horizontal offset value is correct.

   For more information, Refer to Operation and Maintenance Manual, "Selecting an Alignment for Horizontal Guidance".

9. Check that the "H. Setup" Soft Key shows the horizontal offset value. For more information, Refer to Operation and Maintenance Manual, "Setting a Horizontal Offset".

10. Check that the "Blade: Left" Soft Key or the "Blade: Right" Soft Key shows that the required blade tip is selected.

    Note: Depending on the operator configuration settings of the system, some of the options, Soft Keys, or views that are discussed in this manual may not be available. Other options, Soft Keys or views may be available.

Work Preparation Checks

In order to optimize the accuracy of the AccuGrade System, complete the following checks:

• Restore Settings

• Display Brightness

• GPS Accuracy Mode

• Valve Speed

• Lightbar Tolerances

• Blade Wear

• Mast(s) Vertical

• Vertical Guidance

• Cutting Edge Guidance

Restore Settings

Machine Settings

You must use the correct machine settings for your machine to ensure accurate guidance. This will need to be done if the display is moved to a different machine. To restore a machine settings file complete the following steps:

1. Make sure that there is a data card inserted in the Display with a machine configuration file. Make sure that the machine configuration file is stored on the root directory.

2. From any guidance screen, press "Setup Menu".

3. Select "Restore Settings".

4. Press "OK".

5. Select "Machine Settings".

   If "Machine Settings" option is not displayed, see your site supervisor.

   A dialog similar to Illustration 11 will appear.

6. Press "OK".

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Illustration 11	g01266759

7. Select the correct setting file for your machine.

8. Press "OK" to confirm the settings, or "ESC" to exit without saving.

When you restore a machine settings file, a dialog warns you to check the blade wear setting. Refer to "Blade Wear" for information pertaining to checking the wear of the blade.

Note: Always check the Blade Wear dialog. The machine cutting edge may have worn (or been renewed) since the Machine Settings were saved.

Display Settings

The display settings can be configured for different operator preferences or different job requirements. To restore a display settings file complete the following steps:

1. Make sure that there is a data card inserted in the Display with a machine configuration file. Make sure that the machine configuration file is stored on the root directory.

2. From any guidance screen, press "Setup Menu".

3. Select "Restore Settings".

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Illustration 12	g01266765

4. Select "Display Settings".

   A dialog similar to Illustration 12 appears.

5. Press "OK".

6. Select the correct setting file for your use.

7. Press "OK" in order to confirm the settings, or "ESC" in order to exit without saving.

Display Brightness

The brightness of the Display screen should be adjusted to suit your working conditions. The brightness of the display can be adjusted using the following key combinations:

• To increase the display brightness, hold down on the "Menu" key and press the "+" Key.

• To decrease the display brightness, hold down on the "Menu" key and press the "-" Key.

GPS Accuracy Mode

By default, the GPS Accuracy Mode is available for all configurations of the AccuGrade System. Depending on the operator configuration settings for your system, some of the options, Soft Keys, or views discussed in this manual may not be accessible.

Use GPS Accuracy Mode in order to set the maximum GPS error estimate that is acceptable for your application.

Refer to Operation and Maintenance Manual, "GPS Accuracy Mode-Set" for additional information.

Valve Speed

Correct valve speeds depend on the type of material that you are moving (for example, sand, hard rock, or dirt) and what tasks you are doing (for example, base grade or finished grade). Speed of operation and Engine RPM are factors that can affect valve speeds.

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Once the system is placed in automatic mode, blade movement may occur. Ensure that all personnel are clear of the blade before you place the system in automatic mode. Personal injury or death from crushing could occur.

Refer to the Operation and Maintenance Manual, "Valve Speed - Set" for additional information.

Lightbar Tolerances

The lightbars on-grade tolerance are adjustable in order to provide the appropriate guidance for the Design Surface.

Refer to the Light Bar Scale - Set section of this manual for additionaly information.

Blade Wear

As you operate the machine, the cutting edge of the blade wears away. This feature allows the measurement of the cutting edge to be updated.

Measure the blade wear regularly. Record the amount of wear in the software for the AccuGrade System. For instructions, Refer to Operation and Maintenance Manual, "Blade Wear - Set".

Mast(s) Vertical

The left mast must be in the position that the measure up was performed. The AccuGrade System only gives accurate guidance when the left mast is in this position. For example, the left mast must be vertical when the machine is on level ground.

Note: Ensure that the blade is in the normal working position if you are unable to adjust the blade.

Vertical Guidance

Verify or change the desired vertical guidance method. Refer to Operation and Maintenance Manual, "Vertical Guidance Method - Set" for additional information.

The AccuGrade System examines the design surface from two points on the cutting edge of the blade. These two points are configurable by the operator. When a one point method is used, the system examines the design from two points that are 5.0 cm (2.0 inch) apart. Once a vertical guidance method is selected, the system examines the design directly above or below the two selected points. The system will then try to move the blade to those points on the design when the system is in Automatic mode. If overcut protection is turned on, two additional points are examined at the blade tips. This will keep the blade tips from digging into the design when the system is in Automatic mode.

Cutting Edge Guidance

Always check the accuracy of the system before you start work. Compare the coordinates that are shown on the Display with the known 3D coordinates of a survey mark.

In order to check accuracy, complete the following steps:

1. Make sure that the system is using a high accuracy GPS position.

2. Place the focus point of the cutting edge on the survey mark.

   If an angle sensor is not used, it is necessary to lower the blade to a position that is close to same elevation as survey mark. Additionally, move the machine blade tip with focus to the survey mark. Move the machine blade tip at least 3.05 m (10.0 ft)

3. Check that the position that is shown on the Display agrees with the known position of the survey mark.

   This check ensures that the machine is operating with the correct GPS configuration and that the machine is operating with the correct machine dimensions. For more information, refer to Systems Operation, "Setting the Machine Dimensions".

   Note: Regularly check the accuracy of the system. This helps determine the wear on the cutting edge. Always check the system accuracy after you restore a Display configuration.

Blade Focus

Position information that is shown on the Display relates to the guidance point that has focus on the blade. The red square on the blade indicates the part of the blade that has focus.

The guidance point that has focus can be on the left side of the blade, or on the right side of the blade.

If an alignment is selected, the center lightbar gives guidance to the side of the blade that has focus.