GRADE System Calibration and Measure-Up Procedure for the 2D and 3D on Excavators {1408, 7220} Caterpillar

Excavator

312F (S/N: FKE1-UP; KMK1-UP)

313F (S/N: GJD1-UP; DJE1-UP; NLG1-UP; PRG1-UP; HDK1-UP)

330F (S/N: WBA1-UP; LCG1-UP; LBN1-UP; JFR1-UP; HBT1-UP; MBX1-UP)

336F (S/N: YBH1-UP; NAJ1-UP; PFL1-UP; LTP1-UP; DFY1-UP)

349F (S/N: BZ21-UP; KEA1-UP; HLB1-UP; HPD1-UP; TEW1-UP)

352F (S/N: WNA1-UP; NDC1-UP; YEG1-UP; A9J1-UP; KBP1-UP)

Introduction

This Special Instruction will aid in the GRADE system calibration and measure-up procedure for the 2D and 3D on Excavators.

Reference

Reference: Refer to Operation and Maintenance Manual, M0077726, "Cat^® Grade Control for 2D and 3D Excavators".

Reference: Refer to Electrical Schematic for the respective machine.

Important Safety Information

Work safely. 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.

Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance that might involve a potential hazard.

Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. Ensure that any tool, procedure, work method, or operating technique you use that is not recommended by Caterpillar is safe.

Ensure that the product will not be damaged or the product will not be made unsafe by the operation, lubrication, maintenance, or repair procedures used.

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Do not operate or work on this machine unless you have read and understand the instructions and warnings in the Operation and Maintenance Manuals. Failure to follow the instructions or heed the warnings could result in injury or death. Contact your Cat dealer for replacement manuals. Proper care is your responsibility.

The GRADE system is delivered from the factory with the linkages pre-measured, the onboard sensors calibrated, and the settings pre-configured. Once the work tool is measured, a Global Navigation Satellite System (GNSS) correction machine radio is connected, loose devices mounted, and a design surface is loaded, the system is ready to work.

Note: There is a large number of work tools and coupler variation. The work tool measurements are required to characterize the work tool for the GRADE system. The most common work tool is a standard bucket.

Mounting the GRADE Display

Identify the GRADE display and unpackage. The GRADE display is usually located in a box in the cab when shipped from the factory. Loosen the RAM ball mount and place around the mounting ball in the cab in the preferred location above the machine monitor. Adjust the angle for the appropriate field of view and orientation.

GNSS Mast Installation

Identify the Left and Right GNSS Receiver Masts are secured to the base plates on top of the machine. The Left GNSS Mast base plate is directly behind the cab and the Right GNSS base plate is over the hydraulic fluid tank. The GNSS Receiver Masts will arrive already bolted to the base plates.

Mounting the GNSS Receivers

Identify the GNSS Receiver Units and unpackage. The GNSS Receiver Units are usually located in a box in the cab. The GNSS Receiver Unit itself is not unique to the Left or Right GNSS Mast position so either unit may be placed directly on the GNSS Mast and secured by the tightening handle. Before tightening, insure that the GNSS Receiver is fully seated on the GNSS Mast. Neglecting to seat the GNSS Receiver fully will result in guidance error. When the GNSS Receiver Unit is mounted on the mast attach the connector at that location to the unit. If the machine is keyed on, the lights on the GNSS Receiver Units will light indicating that the unit is receiving power.

Verify Proper Factory Settings and Measurements for the GRADE system

The GRADE system on the 312F/313F, 330F, 336F XE, 349F, and 352F model hydraulic excavator will be configured with the following information from the factory.

The Boom Linkage part number options and linkage dimensions are listed below:

Table 1

313F Booms	362-3629, 381-1336
Length A-B	4650 mm (183 inch)
Length A-T	2155 mm (84.9 inch)
Length A-R	2824 mm (111.2 inch)
Length B-T	3101 mm (122.1 inch)
Length B-R	2281 mm (89.8 inch)
Length A-X	2010 mm (79.1 inch)
Length X-B	3055 mm (120.3 inch)

Table 2

330F Booms	342-4270
Length A-B	6150 mm (242.1 inch)
Length A-T	2748 mm (108.2 inch)
Length A-R	3628 mm (142.8 inch)
Length B-T	4023 mm (158.4 inch)
Length B-R	3019 mm (118.9 inch)
Length A-X	2736 mm (107.7 inch)
Length X-B	3807 mm (149.9 inch)

Table 3

336F Booms	473-1838	473-1839	470-6041
Length A-B	6500 mm (255.9 inch)	6500 mm (255.9 inch)	6180 mm (243.3 inch)
Length A-T	3095 mm (121.9 inch)	3095 mm (121.9 inch)	3026 mm (119.1 inch)
Length A-R	3883 mm (152.9 inch)	3883 mm (152.9 inch)	3617 mm (142.4 inch)
Length B-T	4077 mm (160.5 inch)	4077 mm (160.5 inch)	3822 mm (150.5 inch)
Length B-R	3232 mm (127.2 inch)	3232 mm (127.2 inch)	3257 mm (128.2 inch)
Length A-X	2841 mm (111.9 inch)	2841 mm (111.9 inch)	2840 mm (111.8 inch)
Length X-B	4049 mm (159.4 inch)	4049 mm (159.4 inch)	3702 mm (145.7 inch)

Table 4

349F Booms	344-0819
Length A-B	6900 mm (271.7 inch)
Length A-T	3231 mm (127.2 inch)
Length A-R	4135 mm (162.8 inch)
Length B-T	4338 mm (170.8 inch)
Length B-R	3402 mm (133.9 inch)
Length A-X	3066 mm (120.7 inch)
Length X-B	4232 mm (166.6 inch)

The Stick Linkage part number options and linkage dimensions are listed below:

Table 5

313F Sticks	394-7646	468-7594
Length B-C	916 mm (36.1 inch)	564 mm (22.2 inch)
Length B-D	2620 mm (103.1 inch)	2120 mm (83.5 inch)
Length B-G	3000 mm (118.1 inch)	2500 mm (98.4 inch)
Length B-S	692 mm (27.2 inch)	679 mm (26.7 inch)
Length C-D	1869 mm (73.6 inch)	1872 mm (73.7 inch)
Length C-G	2245 mm (88.4 inch)	2247 mm (88.5 inch)
Length C-S	1457 mm (57.4 inch)	960 mm (37.8 inch)
Length D-G	381 mm (15.0 inch)	381 mm (15.0 inch)
Length B-L	1460 mm (57.5 inch)	969 mm (38.1 inch)
Length L-M	113 mm (4.4 inch)	132 mm (5.2 inch)

Table 6

330F Sticks	342-4271
Length B-C	900 mm (35.4 inch)
Length B-D	2720 mm (1071.0 inch)
Length B-G	3200 mm (126.0 inch)
Length B-S	946 mm (37.2 inch)
Length C-D	2327 mm (91.6 inch)
Length C-G	2797 mm (110.1 inch)
Length C-S	1439 mm (56.7 inch)
Length D-G	481 mm (18.9 inch)
Length B-L	1787 mm (70.4 inch)
Length L-M	156 mm (6.1 inch)

Table 7

336F Sticks	444-4153	444-4150, 473-1840, 473-1842	467-8376	470-6042
Length B-C	1388 mm (54.6 inch)	883 mm (34.8 inch)	752 mm (29.6 inch)	1104 mm (43.5 inch)
Length B-D	3399 mm (133.8 inch)	2699 mm (106.3 inch)	2299 mm (90.5 inch)	1637 mm (64.4 inch)
Length B-G	3900 mm (153.5 inch)	3200 mm (126.0 inch)	2800 mm (110.2 inch)	2150 mm (84.6 inch)
Length B-S	989 mm (38.9 inch)	991 mm (39.0 inch)	1010 mm (39.8 inch)	1050 mm (41.3 inch)
Length C-D	2345 mm (92.3 inch)	2345 mm (92.3 inch)	2345 mm (92.3 inch)	2702 mm (106.4 inch)
Length C-G	2833 mm (111.5 inch)	2833 mm (111.5 inch)	2833 mm (111.5 inch)	3204 mm (126.1 inch)
Length C-S	2135 mm (84.1 inch)	1472 mm (58.0 inch)	1051 mm (41.4 inch)	630 mm (24.9 inch)
Length D-G	502 mm (19.8 inch)	502 mm (20.0 inch)	502 mm (19.8 inch)	517 mm (20.4 inch)
Length B-L	1815 mm (71.5 inch)	1508 mm (59.4 inch)	1182 mm (46.5 inch)	542 mm (21.3 inch)
Length L-M	272 mm (10.7 inch)	202 mm (8.0 inch)	167 mm (6.6 inch)	352 mm (13.9 inch)

Table 8

349F Sticks	394-7646	468-7594
Length B-C	1173 mm (46.2 inch)	878 mm (34.6 inch)
Length B-D	3392 mm (133.6 inch)	2842 mm (111.9 inch)
Length B-G	3900 mm (153.5 inch)	3350 mm (131.9 inch)
Length B-S	1023 mm (40.8 inch)	1005 mm (39.6 inch)
Length C-D	2679 mm (105.5 inch)	2679 mm (105.5 inch)
Length C-G	3185 mm (125.4 inch)	3185 mm (125.4 inch)
Length C-S	1887 mm (74.3 inch)	1328 mm (52.3 inch)
Length D-G	513 mm (20.2 inch)	513 mm (20.2 inch)
Length B-L	1505 mm (59.3 inch)	1357 mm (53.4 inch)
Length L-M	34 mm (1.4 inch)	84 mm (3.3 inch)

The Idler Length B-C Linkage and Power Linkage part number options and linkage dimensions are listed below:

Table 9

313F Bucket (Power/Idler) Linkage	278-9293, 248-7837, 248-7821, 383-2513, 425-1845, 237-1263, 485-2434	248-7840
Length D-F	528 mm (20.8 inch)	630 mm (24.8 inch)
Length F-H	508 mm (20.0 inch)	590 mm (23.2 inch)

Table 10

330F Power/Idler Link	248-7831	228-5528, 279-2652, 393-8026, 251-2597	236-8416, 236-8415
Length D-F	528 mm (20.8 inch)	635 mm (25.0 inch)	695 mm (27.4 inch)
Length F-H	508 mm (20.0 inch)	640 mm (25.2 inch)	650 mm (25.6 inch)

Table 11

Series 336F Power/Idler Link	251-2651, 234-3929	236-8415, 236-8416, 279-2638, 371-5524, 439-5719
Length D-F	791 mm (31.1 inch)	695 mm (27.4 inch)
Length F-H	700 mm (27.6 inch)	650 mm (25.6 inch)

Table 12

349F Power/Idler Link	251-2651, 234-3929	236-8415, 236-8416, 279-2638, 371-5524, 439-5719
Length D-F	791 mm (31.1 inch)	695 mm (27.4 inch)
Length F-H	700 mm (27.6 inch)	650 mm (25.6 inch)

The Body Vector Measurements are listed below:

Table 13

Series 313F Machine Body	Dimensions
Boom to Center of Rotation Lateral Offset	140 mm (5.5 inch)
Boom to Center of Rotation Reach Offset	120 mm (4.7 inch)

Table 14

313F Bucket Cylinder	368-7043
Bucket Cylinder Maximum Extension	2331 mm (91.8 inch)
Bucket Cylinder Minimum Retraction	1392 mm (54.8 inch)

Table 15

330F Machine Body	Dimension
Boom to Center of Rotation Lateral Offset	37 mm (1.5 inch)
Boom to Center of Rotation Reach Offset	165 mm (6.5 inch)

Table 16

330F Bucket Cylinder	355-0712
Bucket Cylinder Maximum Extension Length	2892 mm (113.9 inch)
Bucket Cylinder Minimum Retraction Length	1736 mm (68.3 inch)

Table 17

336F Machine Body	Dimensions
Boom to Center of Rotation Lateral Offset	105 mm (4.1 inch)
Boom to Center of Rotation Reach Offset	134 mm (5.3 inch)

Table 18

336F Bucket Cylinder	326-0415	367-5217
Bucket Cylinder Maximum Extension Length	2912 mm (114.6 inch)	3369 mm (132.6 inch)
Bucket Cylinder Minimum Retraction Length	1761 mm (69.3 inch)	2013 mm (79.3 inch)

Table 19

349F Machine Body	Dimensions
Boom to Center of Rotation Lateral Offset	110 mm (4.3 inch)
Boom to Center of Rotation Reach Offset	193 mm (7.6 inch)

Table 20

349F Bucket Cylinder	293-7678
Bucket Cylinder Maximum Extension Length	3369 mm (132.6 inch)
Bucket Cylinder Minimum Retraction Length	2013 mm (79.3 inch)

Table 21

Sales Model	Coordinates	Boom Pin Center	Center of Rotation	Right GPS	Left GPS
312F/313F	X	0	-140	660	-1090
	Y	0	-120	-1170	-1295
	Z	0	-1440	1596	1596
330F	X	0	-37	943	-857
	Y	0	-165	-1251	-1251
	Z	0	-1924	876	876
336F XE	X	0	-105	916	-1328
	Y	0	-134	-1570	-1200
	Z	0	-2062	1391	1391
349F	X	0	-110	910	-1337
	Y	0	-193	-1672	-1151
	Z	0	-2183	1435	1365
352F	X	0	-110	910	-1337
	Y	0	-193	-1672	-1151
	Z	0	-2327	1435	1365

The Boom Sensor will be calibrated with three individual values in Location #1-#3

The Stick Sensor will be calibrated with three individual values in Location #1-#3

The Bucket Sensor will be calibrated with one individual values in Location #1

Calibration and Measure Up

The GRADE system on these F-Series Hydraulic Excavators is measured and calibrated from the factory except for the work tool measurements.

Note: For new machines from the factory, skip the majority of the calibration and measure-up and only complete the "Configuring a GRADE work tool" section, the "Installing a Customer Supplied GNSS Radio" section, and "Verifying 2D and 3D Guidance Accuracy" section.

However, there are cases where system repair requires a complete or partial measurement and calibration of the GRADE system. Installation of a custom manufactured or modified linkage may also require the complete measurement and calibration of the system.

There are three areas of the system that are interdependent and must be completed properly for a fully functional and accurate system:

The physical installation of the sensors and links - The system relies on specifically locating the sensors. The calibrations depend on the proper physical installation of the sensors and the calibration results are unique to that mounting.

The measurement settings for the geometry of the linkage - The measurement settings characterize the geometry of each individual linkage and the geometry limits of some of the linkage range of motion. The calibrations depend on the proper measurement settings

The calibrations associate sensor values to geometry on the system - The calibration of the sensors relates specific sensor values in the unique physical installation location to the calibration inputs and the measurement settings for the system.

Physical Installation of the Sensors and Linkage

Body Tilt Sensor

Illustration 1	g06134762
The Body Tilt (AS460) IMU sensor

The Body Tilt (AS460) IMU sensor is mounted on bracket directly to the right of the cab under the boom foot pin on the chassis. The sensor is mounted by four bolts and has no physical adjustment. The connector for the Body Tilt (AS460) IMU sensor should be directed towards the front of the machine and the centerline axis should be parallel with the centerline of the front linkage working envelope.

Boom Rotary Position Sensor

Illustration 2	g06134764
Boom Rotary Position sensor mounted on the right side of the boom foot pin axis.

The Boom Rotary Position sensor is mounted on the right side of the boom foot pin axis. The base bracket for the Boom Rotary Position sensor retains the pin. Centering the base bracket with the pin axis is important. The base of the Boom Rotary Position sensor is bolted to the aligned base bracket and connects to the boom linkage via a sensor lever arm bolted to a boss on the boom linkage.

To center the Boom Rotary Position sensor, center the base bracket with the following steps:

1. Remove the sensor arm from the Boom Rotary Position Sensor.

2. Disconnect and remove the Boom Rotary Position Sensor.

3. Loosen the two bolts fixing the Boom Rotary Position sensor base bracket.

4. Use the Alignment Tool from the table below for the specific machine model to align the base bracket with the pin center axis.
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   Table 22

   Rotary Sensor Alignment Tools
   Model	Boom
   	Part Number	Description
   312E/313F	376-3445	Alignment Tool (M24)
   314E/315F	376-3445	Alignment Tool (M24)
   316E/316F/318E/318F	376-3074	Alignment Tool (M30)
   320E/323E/323F	376-3074	Alignment Tool (M30)
   324E/326F	376-3073	Alignment Tool (M36)
   329E/330F	376-3073	Alignment Tool (M36)
   336E/336F	376-3073	Alignment Tool (M36)
   349E/349F/352F	376-3072	Alignment Tool (M48)
   374F	376-3072	Alignment Tool (M48)
   390F	376-3072	Alignment Tool (M48)

5. Torque the Boom Rotary Position sensor base bracket.

6. Remount the sensor and sensor arm.

Illustration 3	g06134771
Sensor base plate parallel with the linkage plane.

Note: Insure that the sensor base plate is parallel with the linkage plane. An uneven gap between the base bracket and the linkage will indicate a distorted bracket, bolt, or mount that can move the sensor axis off center even when using the Centering Tools.

Stick Rotary Position Sensor

The Stick Rotary Position sensor is mounted on the left side of the boom-stick pin under a protective cover. The base bracket for the Stick Rotary Position sensor retains the pin. Centering the base bracket with the pin axis is important. The base of the Stick Rotary Position sensor is bolted to base bracket and connects to the stick linkage via a sensor lever arm and swivel link that are bolted to a boss on the stick linkage.

The base bracket controls whether the Stick Rotary Position sensor is centered over the axis of the linkage pin. To center the Stick Rotary Position sensor, center the base bracket with the following steps:

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Illustration 4	g06134773
Stick Rotary Position sensor cover

1. Remove the Stick Rotary Position sensor cover.
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   Illustration 5	g06134982
   The sensor arm removed from the stick rotary position sensor.

2. Remove the sensor arm from the Stick Rotary Position Sensor.
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   Illustration 6	g06135046
   Stick Rotary Position Sensor

3. Disconnect and remove the Stick Rotary Position Sensor.

4. Loosen the two bolts fixing the Stick Rotary Position sensor base bracket.
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   Illustration 7	g06135047
   Centering Tool attached to the pin center axis.

5. Use the Centering Tool for the specific machine model to align the base bracket with the pin center axis.
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   Table 23

   Rotary Sensor Alignment Tools
   Model	Stick
   	Part Number	Description
   312E/313F	376-3075	Alignment Tool (3.9 Byte)
   314E/315F	376-3075	Alignment Tool (3.9 Byte)
   316E/316F/318E/318F	376-3075	Alignment Tool (3.9 Byte)
   320E/323E/323F	376-3075	Alignment Tool (3.9 Byte)
   324E/326F	376-3074	Alignment Tool (M30)
   329E/330F	376-3074	Alignment Tool (M30)
   336E/336F	376-3073	Alignment Tool (M36)
   349E/349F/352F	376-3073	Alignment Tool (M36)
   374F	376-3072	Alignment Tool (M48)
   390F	376-3072	Alignment Tool (M48)

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   Illustration 8	g06138102
   Stick rotary position sensor base bracket

6. Torque the Stick Rotary Position sensor base bracket.

7. Remount the sensor and sensor arm.

8. Replace the Stick Rotary Position sensor cover.

Illustration 9	g06135065
Sensor base plate parallel with the linkage plane.

Note: Insure that the sensor base plate is parallel with the linkage plane. An uneven gap between the base bracket and the linkage will indicate a distorted bracket, bolt, or mount that can move the sensor axis off center even when using the Centering Tools.

Bucket Position Sensing Cylinder

Illustration 10	g06135071
Bucket Position Sensing Cylinder

The Bucket Position Sensing Cylinder contains a sensing rod inside the cylinder that measures the cylinder extension. There is no special mounting required for this cylinder. The sensor can be removed in cases of failure by removing the cylinder from the machine and disassembling the cylinder. The cylinder rod must be removed to access the sensing rod inside the cylinder. As long as the sensor inside the cylinder is fully seated and secured with a set screw, there is no need for physically adjusting the sensor.

Left and Right GNSS Receivers

The Left and Right GNSS Receivers are mounted on the top of the machine on the top of supplied masts. The GNSS Receivers are supplied in a box in the cab of the machine when first delivered. These GNSS Receivers are location independent and either unit may be placed on either side of the machine.

Illustration 11	g06178072

Illustration 12	g06178076

Both units must be fully seated so that the bracket stop rests against the top of the mast before securing the GNSS Receiver by applying clamping pressure with the handle. Once the receiver is secured, the twist on connector secured to the mast must be connected to the unit. Once connected the power light will illuminate if the key switch power is ON.

EC520 Controller

Illustration 13	g06178084
EC520 Controller

The EC520 controller is mounted near the Body Tilt sensor under the Boom Foot Pin on the chassis. This controller completes all the 3D calculations.

GRADE Display

The GRADE display is mounted on an articulated RAM ball mount directly above the Machine Monitor on the right side of the cab.

Illustration 14	g06178090
GRADE display

The GRADE display is supplied in a box in the cab when the machine arrives from the factory and must be secured above the Machine Monitor using the RAM ball mount. The RAM ball mount allows the display angle to be adjusted to the preference of the operator. The loose connector must be connected to the back of the display prior to use.

Illustration 15	g06178093

GNSS Correction Radio

The 3D GRADE system requires GNSS correction data to obtain an accurate position. The GNSS correction data can be provided to the system through an on-machine radio. A number of cellular or radio options are possible with the 3D GRADE system and a local Trimble / SITECH dealer offers a number of compatible radios. The system is equipped with mounting hardware and connectors for Trimble 450MHz, 900MHz, or 2.4GHz SNRxxx GNSS Radio Modems.

The GRADE system can be configured to receive GNSS corrections from a non-Trimble radio through serial port communication method. Refer to Section "Configuring a Third-Party GNSS Radio with Serial Connection".

Note: The EC520 (R2) controller must have software version 1.1 or newer, for the system to support third-party radio serial port communication.

Illustration 16	g06165626

The intended installation location is on the exterior left side rear on the outside of the ROPS as shown in Illustration 16. The radio modem is installed fully visible and the connector and diagnostic lights can be seen from below. The SNM940 radio antenna may also be mounted from this bracket.

This section outlines the wiring issues that must be addressed to provide communication with the GRADE system. Caterpillar makes no claim to compatibility with all radios. Also, Caterpillar assumes no responsibility for the performance of the system integrating customer supplied radios.

The following recommendations must be considered when installing a customer supplied radio:

• 18-gauge wire is recommended for all lines. Avoid narrower gauge wire.

• Machine pinouts may vary. Refer to the Electrical Schematic for each machine to determine correct pinouts.

• These instructions do not address any unique power requirements that may apply to individual customer supplied radios.

Power to a customer supplied radio is provided through the GRADE harness at a nominal 24 VDC (15 amp max). Power may vary from 22 - 28 VDC during radio operation. If regulated power is required by the customer supplied radio, the customer must provide a power converter to the radio. Also, the customer must wire the power converter to the radio.

1. Locate the schematic for the connector for the customer supplied radio. Refer to the owner manual or the documentation from the manufacturer.

   1. Verify that 24 V DC nominal power is acceptable.

      Note: If there are any limitations on input power, find a suitable converter. The converter should be wired between the GRADE connection and the connection for the customer supplied radio.

   2. Find the required power and communications pins on the radio.

      These pins may vary for each customer supplied radio. The pins that are listed below are the minimum that are required:

      • + BAT

      • GRND

      • Serial communication wire RS 232-TX for serial communication or CAN high for CAN communication method.

      • Serial communication wire RS 232-RX for serial communication or CAN low for CAN communication method.

2. Locate the Electrical Schematic for the GRADE system and the specific Caterpillar machine. Schematics are available on SISweb.
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   Illustration 17	g06183275

   Note: The two connectors in Illustration 17 are intended to be utilized for the GNSS correctional source radio with a CAN communication method only. For a serial communication method refer to Section "Configuring a Third-Party GNSS Radio with Serial Connection".

   1. Locate the two 12-pin connectors for the GNSS radio.
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      Illustration 18	g06185763
      GNSS Radio Connector

   2. The Black 12-pin Deutsch connector is intended for use with SNRxxx Data Radio. SITECH can provide these SNRxxx Data Radios and the connector harness to plug this radio into the 12-pin Deutsch connector.

   3. The Brown 12-pin Deutsch connector is intended for use with an SNM940 Cellular Data Radio. SITECH can provide these SNM940 Cellular Data Radios and the connector harness to plug this radio into the 12-pin Deutsch connector.

Configuring a Third-Party GNSS Radio with Serial Connection

Note: The EC520 (R2) controller requires Application/OS File V 1.1.0 or newer software version, for the system to support third-party radio serial port communication.

Follow the procedure below to connect the third-party GNSS radio:

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Illustration 19	g06276037

1. Configure the third-party GNSS radio to transmit serial CMR GNSS corrections with 38500 kbaud rate, 8 data bits, and one stop bit.
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   Illustration 20	g06276133
   Lightbar, 3D display, and Grade alarm connectors to 31–pin cab display/CONN72

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   Illustration 21	g06276129
   Connector 72 location (1) CONN72

2. Connect the third-party GNSS correctional source radio serial TX wire to the EC520 controller RX wire using the lightbar connector or the 31-pin cab display connector (CONN 72). Refer to the machine schematic for the complete electric circuit wiring diagram.

   The serial port pins on the connector CONN 72:

   • Display 31-pin connector pin-26 is RS232 RX

   • Display 31-pin connector pin-27 is RS232 TX

   The serial port pins on the lightbar connector:

   • Lightbar connector pin-3 is RS232 TX

   • Lightbar connector pin-4 is RS232 RX

Follow the procedure below to configure the third-party GNSS radio:

Note: An external lightbar option could be connected and utilized with system in addition to the serial port third-party GNSS radio option. To connect the external lightbar, connect the lightbar RS232_RX wire to the RS232_TX wire.

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Illustration 22	g06275986
(2) System Settings icon

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Illustration 23	g06275987
(3) GNSS correction source

1. From the operator Web UI on the TD520 GRADE display, press the "System Setting" icon on the left bottom corner of the display main menu.

2. Press the "GNSS Correction Source" from the "SYSTEM SETTING" menu.
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   Illustration 24	g06273502

3. Select "None" for the correction source in the GRADE application and press "Set".
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   Illustration 25	g06275989
   (4) Tech Web UI main menu (5) Monitor menu option (6) GNSS details (7) GNSS details menu (8) Integrity field

4. To verify that the GNSS obtains an RTK fixed positioning, enter the Tech Web UI on the TD520 GRADE display. From the main menu select "Monitor" (5), then select "GNSS Details" (6). The "Mode" field on the "GNSS Details" menu screen (7) should be set as "RTK" (Real Time Kinematic) and the data integrity rate percentages for the left GNSS should increase to +80% or higher in the 100 sec on the "Integrity" field (8).

Measurement Settings for the Geometry of the Linkage

The Measurement Settings for the Geometry of the Linkage are fixed parameters that characterize the fixed dimensions of the linkage and the limits of the linkage movement. These settings allow the system to calculate the work tool position based on the output of the sensors used by the system. The Measurement Settings for the Geometry of the Linkage are all configured in the machine at the factory and should only require adjustment if a linkage is modified.

The system has the settings pre-loaded for several supported linkages. Measurement of the fixed linkage dimensions should only be required in cases of modified or custom built linkages. The system has the following settings:

• Machine Dimensions: Boom

• Machine Dimensions: Stick

• Machine Dimensions: Idler Link

• Machine Dimensions: Power Link

• Machine Dimensions: Machine Body

• Grade Control Settings

• GRADE Dimensions : 3D Vector Measurements

Machine Dimensions: Boom

The Boom linkage has several dimensions that fully characterize the linkage for the GRADE system, Linkage Elevation Monitoring system, and the Production Measurement system. For a functional system, the dimensions must be non-zero and not violate any geometric rules (for example, the points must form valid triangles). Some of the dimensions are used for GRADE, some for the Linkage Elevation Monitoring (LEM) System Only, and others for the Production Measurement (CPM) system only. The dimensions that are pre-loaded in the software are assigned to the linkage part number. These linkage dimensions are tightly controlled during manufacture and there is usually no need to remeasure dimensions. A modified or custom linkage will have to be measured and the dimensions entered into the system. Dimensions can only be entered when the User-Defined linkage is selected: USR BOOM

Illustration 26	g06135073
Machine boom

Table 24

313F Booms	362-3629, 381-1336	Used By
Length A-B	4650 mm (183.0 inch)	GRADE + CPM + LEM
Length A-T	2155 mm (84.8 inch)	LEM
Length A-R	2824 mm (111.2 inch)	LEM
Length B-T	3101 mm (122.1 inch)	LEM
Length B-R	2281 mm (89.8 inch)	LEM
Length A-X	2010 mm (79.1 inch)	CPM
Length X-B	3055 mm (120.3 inch)	CPM

Table 25

330F Booms	342-4270	Used By
Length A-B	6150 mm (242.1 inch)	GRADE + CPM + LEM
Length A-T	2748 mm (108.2 inch)	LEM
Length A-R	3628 mm (142.8 inch)	LEM
Length B-T	4023 mm (158.4 inch)	LEM
Length B-R	3019 mm (118.9 inch)	LEM
Length A-X	2736 mm (107.7 inch)	CPM
Length X-B	3807 mm (149.9 inch)	CPM

Table 26

336F Booms	473-1838	473-1839	470-6041	Used By
Length A-B	6500 mm (255.9 inch)	6500 mm (255.9 inch)	6180 mm (243.3 inch)	GRADE + CPM + LEM
Length A-T	3095 mm (121.9 inch)	3095 mm (121.9 inch)	3026 mm (119.1 inch)	LEM
Length A-R	3883 mm (152.9 inch)	3883 mm (152.9 inch)	3617 mm (142.4 inch)	LEM
Length B-T	4077 mm (160.5 inch)	4077 mm (160.5 inch)	3822 mm (150.5 inch)	LEM
Length B-R	3232 mm (127.2 inch)	3232 mm (127.2 inch)	3257 mm (128.2 inch)	LEM
Length A-X	2841 mm (111.9 inch)	2841 mm (111.9 inch)	2840 mm (111.8 inch)	CPM
Length X-B	4049 mm (159.4 inch)	4049 mm (159.4 inch)	3702 mm (145.7 inch)	CPM

Table 27

349F Booms	344-0819	Used By
Length A-B	6900 mm (271.7 inch)	GRADE + CPM + LEM
Length A-T	3231 mm (127.2 inch)	LEM
Length A-R	4135 mm (162.8 inch)	LEM
Length B-T	4338 mm (170.8 inch)	LEM
Length B-R	3402 mm (133.9 inch)	LEM
Length A-X	3066 mm (120.7 inch)	CPM
Length X-B	4232 mm (166.6 inch)	CPM

Machine Dimensions: Stick

The Stick linkage has several dimensions that fully characterize the linkage for the GRADE system, Linkage Elevation Monitoring system, and the Production Measurement system. For a functional system, the dimensions must be non-zero and not violate any geometric rules (for example, the points must form valid triangles). Some of the dimensions are used for GRADE system, some for the Linkage Elevation Monitoring (LEM) System Only, and others for the Production Measurement (CPM) system only. The dimensions that are preloaded in the software are assigned to the linkage part number. These linkage dimensions are tightly controlled during manufacture and there is usually no need to remeasure dimensions. A modified or custom linkage will have to be measured and the dimensions entered into the system. Dimensions can only be entered when the User-Defined linkage is selected: USR STICK

Illustration 27	g06135077
Machine stick

Illustration 28	g06135086
Cat Grade Control "Stick" dimensions screen

Table 28

313F Sticks	394-7646	468-7594	Used By
Length B-C	916 mm (36.1 inch)	564 mm (22.2 inch)	GRADE + CPM + LEM
Length B-D	2620 mm (103.1 inch)	2120 mm (83.5 inch)	GRADE + CPM + LEM
Length B-G	3000 mm (118.1 inch)	2500 mm (98.4 inch)	GRADE + CPM + LEM
Length B-S	692 mm (27.2 inch)	679 mm (26.7 inch)	LEM
Length C-D	1869 mm (73.6 inch)	1872 mm (73.7 inch)	GRADE + CPM + LEM
Length C-G	2245 mm (88.4 inch)	2247 mm (88.5 inch)	GRADE + CPM + LEM
Length C-S	1457 mm (57.4 inch)	960 mm (37.8 inch)	LEM
Length D-G	381 mm (15.0 inch)	381 mm (15.0 inch)	GRADE + CPM + LEM
Length B-L	1460 mm (57.5 inch)	969 mm (38.1 inch)	GRADE
Length L-M	113 mm (4.4 inch)	132 mm (5.2 inch)	GRADE

Table 29

330F Sticks	342-4271	Used By
Length B-C	900 mm (35.4 inch)	GRADE + CPM + LEM
Length B-D	2720 mm (107.1 inch)	GRADE + CPM + LEM
Length B-G	3200 mm (126.0 inch)	GRADE + CPM + LEM
Length B-S	946 mm (37.2 inch)	LEM
Length C-D	2327 mm (91.6 inch)	GRADE + CPM + LEM
Length C-G	2797 mm (110.1 inch)	GRADE + CPM + LEM
Length C-S	1439 mm (56.7 inch)	LEM
Length D-G	481 mm (18.9 inch)	GRADE + CPM + LEM
Length B-L	1787 mm (70.4 inch)	GRADE
Length L-M	156 mm (6.1 inch)	GRADE

Table 30

336F Sticks	444-4153	444-4150, 473-1840, 473-1842	467-8376	470-6042	Used By
Length B-C	1388 mm (54.6 inch)	883 mm (34.8 inch)	752 mm (29.6 inch)	1104 mm (43.5 inch)	GRADE + CPM + LEM
Length B-D	3399 mm (133.8 inch)	2699 mm (106.3 inch)	2299 mm (90.5 inch)	1637 mm (64.4 inch)	GRADE + CPM + LEM
Length B-G	3900 mm (153.5 inch)	3200 mm (126.0 inch)	2800 mm (110.2 inch)	2150 mm (84.6 inch)	GRADE + CPM + LEM
Length B-S	989 mm (38.9 inch)	991 mm (39.0 inch)	1010 mm (39.8 inch)	1050 mm (41.3 inch)	LEM
Length C-D	2345 mm (92.3 inch)	2345 mm (92.3 inch)	2345 mm (92.3 inch)	2702 mm (106.4 inch)	GRADE + CPM + LEM
Length C-G	2833 mm (111.5 inch)	2833 mm (111.5 inch)	2833 mm (111.5 inch)	3204 mm (126.1 inch)	GRADE + CPM + LEM
Length C-S	2135 mm (84.1 inch)	1472 mm (58.0 inch)	1051 mm (41.4 inch)	630 mm (24.8 inch)	LEM
Length D-G	502 mm (19.8 inch)	502 mm (19.8 inch)	502 mm (19.8 inch)	517 mm (20.4 inch)	GRADE + CPM + LEM
Length B-L	1815 mm (71.5 inch)	1508 mm (59.4 inch)	1182 mm (46.5 inch)	542 mm (21.3 inch)	GRADE
Length L-M	272 mm (10.7 inch)	202 mm (8.0 inch)	167 mm (6.6 inch)	352 mm (13.6 inch)	GRADE

Table 31

349F Sticks	394-7646	468-7594	Used By
Length B-C	1173 mm (46.2 inch)	878 mm (34.6 inch)	GRADE + CPM + LEM
Length B-D	3392 mm (133.5 inch)	2842 mm (111.9 inch)	GRADE + CPM + LEM
Length B-G	3900 mm (153.5 inch)	3350 mm (131.9 inch)	GRADE + CPM + LEM
Length B-S	1023 mm (40.3 inch)	1005 mm (39.6 inch)	LEM
Length C-D	2679 mm (105.5 inch)	2679 mm (105.5 inch)	GRADE + CPM + LEM
Length C-G	3185 mm (125.4 inch)	3185 mm (125.4 inch)	GRADE + CPM + LEM
Length C-S	1887 mm (74.3 inch)	1328 mm (52.3 inch)	LEM
Length D-G	513 mm (20.2 inch)	513 mm (20.2 inch)	GRADE + CPM + LEM
Length B-L	1505 mm (59.3 inch)	1357 mm (53.4 inch)	GRADE
Length L-M	34 mm (1.3 inch)	84 mm (3.3 inch)	GRADE

Note: If a custom Stick Linkage is manufactured and installed on the machine, the position of the welded boss on the Stick Linkage for the Stick Rotary Position sensor is important for the GRADE system. Poor placement of the boss on the Stick Linkage can result in non-concentric motion.

Note: If repositioning the Laser Catcher on a custom Stick Linkage, Length B - L and Length L - M must be updated.

Machine Dimensions: Idler Link

The Idler Link linkage has one dimension that fully characterizes the linkage for the GRADE system, Linkage Elevation Monitoring system, and the Production Measurement system. For a functional system, the dimensions must be non-zero and not violate any geometric rules (for example, the points must form valid triangles). The dimensions that are preloaded in the software are assigned to the linkage part number. These linkage dimensions are tightly controlled during manufacture and there is usually no need to remeasure dimensions. A modified or custom linkage will have to be measured and the dimensions entered into the system. Dimensions can only be entered when the User-Defined linkage is selected: USR I-LINK

Illustration 29	g06135089
Machine idler link

Illustration 30	g06135094
Cat Grade Control "Idler Link" dimensions screen

Table 32

313FBucket (Power/Idler) Linkage	278-9293, 248-7837, 248-7821, 383-2513, 425-1845, 237-1263, 485-2434	248-7840	Used By
Length D-F	528 mm (20.78736 inch)	630 mm (24.80310 inch)	GRADE + CPM + LEM
Length F-H	508 mm (19.99996 inch)	590 mm (23.22830 inch)	GRADE + CPM + LEM

Table 33

330F Power/Idler Link	248-7831	228-5528, 279-2652, 393-8026, 251-2597	236-8416, 236-8415	Used By
Length D-F	528 mm (20.8 inch)	635 mm (25.0 inch)	695 mm (27.4 inch)	GRADE + CPM + LEM
Length F-H	508 mm (20.0 inch)	640 mm (25.2 inch)	650 mm (25.6 inch)	GRADE + CPM + LEM

Table 34

Series 336F Power/Idler Link	251-2651, 234-3929	236-8415, 236-8416, 279-2638, 371-5524, 439-5719	Used By
Length D-F	791 mm (31.1 inch)	695 mm (27.4 inch)	GRADE + CPM + LEM
Length F-H	700 mm (27.6 inch)	650 mm (25.6 inch)	GRADE + CPM + LEM

Table 35

349F Power/Idler Link	251-2651, 234-3929	236-8415, 236-8416, 279-2638, 371-5524, 439-5719	Used By
Length D-F	791 mm (31.1 inch)	695 mm (27.4 inch)	GRADE + CPM + LEM
Length F-H	700 mm (27.6 inch)	650 mm (25.6 inch)	GRADE + CPM + LEM

Machine Dimensions: Power Link

The Power Link linkage has one dimension that fully characterizes the linkage for the GRADE system, Linkage Elevation Monitoring system, and the Production Measurement system. For a functional system, the dimension must be non-zero and not violate any geometric rules (for example, the points must form valid triangles). The dimensions that are preloaded in the software are assigned to the linkage part number. These linkage dimensions are tightly controlled during manufacture and there is usually no need to remeasure dimensions. A modified or custom linkage will have to be measured and the dimensions entered into the system. Dimensions can only be entered when the User-Defined linkage is selected: USR P-LINK

Illustration 31	g06135196
Machine power link

Illustration 32	g06135221
Cat Grade Control "Power Link" dimensions screen

Machine Dimensions: Machine Body

The Machine Body dimensions are only used by the GRADE system in cases where machine rotation is supported. Rotation is only supported when a Direction Heading Sensor is installed or a 3D GNSS system is installed on top of a 2D GRADE system. For a functional system, the dimensions must be non-zero. The dimensions that are preloaded in the software based on the machine model.

Illustration 33	g06135413
Cat Grade Control "Machine Body" dimensions screen

Table 36

Machine Body Dimensions
Name	312F/313F	330F	336F	349F-352F	Used By
Boom Pivot Lateral Offset	140	37	105	110	GRADE 3D
Boom Pivot Reach Offset	120	165	134	193	GRADE 3D

Grade Control Settings

The Measurement Settings for the Geometry of the Linkage in the Grade Control Setting Menu are important for the system. The parameters that are critical to the setup of the system are:

• Stick Maximum Extension Angle

• Stick Minimum Retraction Angle

• Boom Maximum Extension Angle

• Boom Minimum Retraction Angle

• Bucket Cylinder Maximum Extension Length

• Bucket Cylinder Minimum Retraction Length

These parameters are used by the system to calibrate the system when the Front Linkage Position Sensor Calibration is completed. These values are pre-loaded in the software and will self-populate based on the machine model and the selected linkages. If the values fail to self-load, the Front Linkage Position Sensor Calibration will produce poor calibration values. If the Stick and Boom Max and Min. Angles are incorrect, the Front Linkage Position Sensor Value can be deleted from the Location #1 on the Boom and Stick Sensor calibration tables but the Bucket Min. and Max Length must be correctly loaded and displayed here for an accurately working system. These setting values may be modified at any time but the change will only take effect after completing a Front Linkage Position Sensor Calibration.

Illustration 34	g06135418
Cat Grade Control "CGC Setting" dimensions screen

Table 37

Cat Grade Control "CGC Setting" Dimensions
Name	312F/313F	330F	336F	349F-352F	Used By
Bucket Cylinder Max Extension Length	2331	2892	2912	3369	GRADE + CPM + LEM
Bucket Cylinder Min Retraction Length	1392	1736	1761	2013	GRADE + CPM + LEM

The Bucket Cylinder Maximum Extension Length and Bucket Cylinder Minimum Retraction Length may be measured and entered into the system if the values are incorrectly displayed in the system. Modified or custom linkages will require that these values be adjusted to represent the limits of the new linkage. If the Bucket Cylinder is reused from an original machine, the original Bucket Cylinder Maximum Extension Length and the Bucket Cylinder Minimum Retraction Length may be reused.

The Boom Angle for the GRADE "CGC Setting" is defined as the angle between Length A-B and chassis horizontal (not gravitational horizontal). The Stick Angle for the GRADE "CGC Setting" is defined as the angle between Length A-B and Length A-G. The Bucket Cylinder Length is defined as the distance between Point C and Point F on the Bucket Cylinder.

GRADE Dimensions: 3D Vector Measurements

The 3D Vector Measurements relate the Left GNSS Receiver device and the Right GNSS Receiver device to the base of the boom linkage.

For a functional system, the dimensions must be non-zero and not violate any geometric rules. The default dimensions that are preloaded in the system are controlled by manufacturing and assembly processes and should be accurate. If accuracy testing indicates an issue with the 3D system, these vector dimensions can be obtained through a calibration process using the Left and Right GNSS Receiver devices.

If the locations of the GNSS Receiver factory mast brackets are moved or the height of the factory GNSS Receiver masts are changed, the default vector dimensions will not accurately represent the system. For custom GNSS Receiver mast locations, a 3D Vector calibration will be necessary.

Table 38

Sales Model	Coordinates	Boom Pin Center	Center of Rotation	Right GPS	Left GPS
312F/313F	X	0	-140	660	-1090
	Y	0	-120	-1170	-1295
	Z	0	-1440	1596	1596
330F	X	0	-37	943	-857
	Y	0	-165	-1251	-1251
	Z	0	-1924	876	876
336F XE	X	0	-105	916	-1328
	Y	0	-134	-1570	-1200
	Z	0	-2062	1391	1391
349F	X	0	-110	910	-1337
	Y	0	-193	-1672	-1151
	Z	0	-2183	1435	1365
352F	X	0	-110	910	-1337
	Y	0	-193	-1672	-1151
	Z	0	-2327	1435	1365

The 3D Vector Dimensions include the coordinate locations for the center of the base boom pin axis, the center of rotation for the chassis, the left GNSS Receiver antenna center, and the right GNSS Receiver antenna center. The 3D Vector Dimensions will not impact the 2D GRADE performance.

Calibrations for the GRADE system

The calibration of the sensors relates specific sensor values to the calibration values for a unique machine and the configured measurement settings for the system to produce an accurately functioning system. These calibrations depend the sensor mounting, fixed linkage measurements, and the linkage settings. Changing any of the underlying parameters of these calibrations may invalidate the calibration values produced. Some of the calibrations can depend on existing calibration values so the order to completing some of the calibrations is important. The calibrations for the GRADE system are listed below:

• Body Tilt Sensor Calibration

• Front Linkage Position Sensor Calibration

• Boom Sensor Calibration

• Stick Sensor Calibration

• Bucket Sensor Calibration

Body Tilt Sensor Calibration

The Body Tilt Sensor Calibration calibrates the Body Tilt (AS460) IMU Sensor for the GRADE system. Calibrating this sensor first is important, as the Boom Sensor Calibration values are partially dependent on this calibration. The Body Tilt Sensor Calibration can be started by navigating on the onboard 300E Monitor to "Menu > Service > Grade Control System > CGC Calibrations > Body Tilt Sensor". The accuracy of the calibration is not dependent on any settings but solely on the sensor being securely mounted to the chassis and aligned with the front linkage and the accuracy of the calibration steps.

Illustration 35	g06135424
Cat Grade Control "CGC Calibrations" screen

Front Linkage Position Sensor Calibration

The Front Linkage Position Sensor Calibration calibrates one value for the Boom Sensor, one value for the Stick Sensor, and one value for the Bucket Sensor. The Front Linkage Position Sensor Calibration should be completed second in the process of calibrations for a complete system setup. This calibration depends on both the Cat Grade Control Settings listed earlier relating to the minimum and maximum range of motion limits and the Body Tilt Sensor Calibration results completed earlier. The Front Linkage Position Sensor Calibration can be started by navigating on the onboard 300E Monitor to Menu > Service > Calibrations > Front Linkage Pos Sensor. The Location #1 values produced by the calibration in the Boom Sensor table and the Stick sensor table may be deleted later, after completing individual high accuracy sensor calibrations, but the Location #1 value produced in the Bucket Sensor table should never be deleted unless redoing the Front Linkage Position Sensor calibration.

Illustration 36	g06135426
Cat Grade Control "CGC Calibrations" screen

Boom Sensor Calibration

The Boom Sensor Calibration calibrates the Boom Rotary Position Sensor for the GRADE system. This sensor may be calibrated at any point after the Body Tilt Sensor Calibration and Front Linkage Position Sensor Calibration. The Boom Sensor Calibration can be started by navigating on the onboard 300E Monitor to "Menu > Service > Grade Control System > CGC Calibrations > Boom Sensor > NOT USED". A calibration will only successfully complete if a "NOT USED" location in the table is selected. The accuracy of the calibration depends on the accuracy of the fixed linkage dimensions entered into the Machine Dimension settings, the accuracy of the completed Body Tilt Sensor Calibration, and the accuracy of the calibration input measurement entered. The calibration process will require the vertical height difference between Pin B and Pin A be entered. This calibration should be repeated a minimum of three times at various places throughout the boom range of motion.

Illustration 37	g06135428
Cat Grade Control "Boom Sensor" calibration screen

Note: Only calibrating the sensor at one linkage position or over a limited range of motion may not lead to optimum system accuracy. Calibrating the sensor over the entire working range of the linkage will average out slight sensor misalignment and lead to the highest accuracy. The calibration offset angles produced from this calibration should be relatively repeatable throughout the range of motion of the machine for aligned sensors. It is not necessary for all offset values to be within 0.4 degrees for GRADE machines. However, if the range of calibration offset values exceed 1 degree, the sensor alignment should be verified and the sensor movement should be examined for movement obstructions or interference.

Calibrating throughout the entire working range of the Boom is difficult to achieve without digging a hole so a reduced calibration range is acceptable for the Boom sensor. The Boom sensor is less prone to error than the Stick sensor and it is common to see a range in calibration values less than 0.2 degrees.

Illustration 38	g06135429

Stick Sensor Calibration

The Stick Sensor Calibration calibrates the Stick Rotary Position Sensor for the GRADE system. This sensor may be calibrated at any point after the Body Tilt Sensor Calibration and Front Linkage Position Sensor Calibration. The Stick Sensor Calibration can be started by navigating on the onboard 300E Monitor to "Menu > Service > Grade Control System > CGC Calibrations > Stick Sensor > NOT USED". A calibration will only successfully complete if a "NOT USED" location in the table is selected. The accuracy of the calibration depends on the accuracy of the fixed linkage dimensions entered into the Machine Dimension settings, and the accuracy of the calibration input measurement entered. The calibration process will require the straight-lined (slope) distance between Pin A and Pin G along the centerline of the front linkage to be entered. This calibration should be repeated a minimum of three times at various places throughout the stick range of motion.

Illustration 39	g06135434
Cat Grade Control "Stick Sensor" calibration screen

Note: Only calibrating the sensor at one linkage position or over a limited range of motion may not lead to optimum system accuracy. Calibrating the sensor over the entire working range of the linkage will average out slight sensor misalignment and lead to the highest accuracy. The calibration offset angles produced from this calibration should be relatively repeatable throughout the range of motion of the machine for aligned sensors. It is not necessary for all offset values to be within 0.4 degrees for GRADE machines. However, if the range of calibration offset values exceed 1 degree, the sensor alignment should be verified and the sensor movement should be examined for movement obstructions or interference. Caterpillar recommends three individual calibration points for the sensor close to either extent and middle of the sensor travel.

Calibrating throughout the entire working range of the Stick is essential to achieving an accurate system. The Stick sensor is more prone to error than the Boom sensor due to the additional swivel link and the larger working range. It is common to see a range in calibration values up to 0.8 degrees.

Illustration 40	g06135437

Bucket Sensor Calibration

The Bucket Sensor Calibration calibrates the Bucket Position Sensing Cylinder for the GRADE system. This sensor is fully by Front Linkage Position Sensor Calibration and there is rarely a need to add more individual calibration values to the Bucket Sensor table. The Bucket Sensor table may be viewed by navigating on the onboard 300E Monitor to "Menu > Service > Grade Control System > CGC Calibrations > Bucket Sensor". However, little to no accuracy improvement is seen with adding calibration values when a "NOT USED" location is used to calibrate the system further. There is actually a good chance to degrade the system accuracy by adding values to the table incorrectly. The calibration process will require the straight-lined (slope) distance between Pin C and Pin F along the centerline of the cylinder but error in measurement of even 1mm when entering values near the endpoints can invalidate the entire Position Sensing Cylinder Calibration. If values are added to the table, adding the calibration values in the middle of the cylinder stroke is less prone to error.

Illustration 41	g06135440
Cat Grade Control "Bucket Sensor" calibration screen

Illustration 42	g06135442

Bucket Measure-Up

Completing the sequence up to this point completes the machine side setup of the GRADE system. These activities are completed at the factory to prepare the GRADE system on a machine for use. The only task remaining is to measure up a work tool. Instructions for measuring up a bucket are included in the Section "Configuring a GRADE Work Tool".

Body IMU Calibration

The Body Vector Measurements may be completed using the Installation Assistant in the Tech User Interface (UI) to the EC520 Controller.

Note: For the Body Vector Measurement to be accurately calculated from the Installation Assistant, it is important to have the Body Inertial Measuring Unit (IMU) accurately calibrated. The first step of the Body IMU calibration is to position the machine on a stable slope greater than 2 degrees.

Configuring a GRADE Work Tool

To configure a bucket for guidance in the GRADE system, perform the following procedure:

Note: The work tools may only be configured by the dimensions entered through the machine monitor and not through the Technical User Interface (Tech UI) to the EC520 Controller.

Show/hide table

Illustration 43	g03667548

1. From the main menu, select "Work Tools". To configure a bucket, select a tool from the list. Navigate the work tool list with the up/down arrows. When the desired tool is selected, press the "OK" key.
   Show/hide table

   Illustration 44	g03667568

2. To edit a bucket, press F3 (the third soft key from the left – Tool Dimension icon).
   Show/hide table

   Illustration 45	g03667681

3. Press the "OK" key to acknowledge the warning.
   Show/hide table

   Illustration 46	g03667701

4. Press the "Simplified Bucket Measure-Up" button, the second softkey from the left in Illustration 46, to start the measure-up process.
   Show/hide table

   Illustration 47	g03674334

5. Select the "Tool Program Name" field and press the "OK" key. Use your arrow keys to navigate the on-screen keyboard, and the "OK" key to select the desired letter, number, or function. The tool program name is "BUCKET ONE", refer to Illustration 47. When the name is complete, press F3 (third soft key from the left) that says "Enter".

6. Press the "OK" key when the "Work Tool Type" field is highlighted. Use the arrow keys to scroll through the available options. Press the "OK" key when the desired selection is highlighted. For proper GRADE operation and retention of the bucket dimensions, the "Work Tool Type" field should show USR WT#XX corresponding to the tool number in the "Work Tool" list.

   Note: If the "Work Tool Type" field shows "Disabled", then any dimensions entered for the bucket will not be retained through a machine power cycle and the system will notify the operator to "Check Linkage Dimensions" on the next machine power-up.

   Note: "Body Tilt", "Front Linkage", "Boom Sensor", "Stick Sensor", and "Bucket Calibration" must have been completed prior to initiating the new simplified "Bucket Measure-Up". These calibration measurements are now completed at the factory so there should be no issue proceeding directly to the "Bucket Measure-Up".

7. After configuring the "Work Tool Type" from the "Tool Dimension" screen, press the F2 softkey (second softkey from the left) to initiate the bucket measure-up procedure.
   Show/hide table

   Illustration 48	g03668995

8. Press the "OK" key to acknowledge the warning.
   Show/hide table

   Illustration 49	g03669001

9. Select the "Tool Type". Use the up/down arrow keys to choose the desired work tool type of a tilt bucket or a standard bucket. Press "OK" to continue.

   Note: The following steps demonstrate a tilt bucket. Tilt bucket requires a few additional steps that a standard bucket does not require.

   Show/hide table

   Illustration 50	g03669023

   Show/hide table

   Illustration 51	g03674445

10. After defining the bucket type, measure the distance between points (G) and (H).

    Note: The dimensions of any quick coupler or quick hitch are included the bucket dimensions. For machines with quick couplers, the bucket measurements to point (G) are measured to the pin between the stick linkage and quick coupler linkage. Similarly for machines with quick couplers, the bucket measurements to point (H) are to the pin between the power linkage and the quick coupler. The points where the bucket attaches to the quick coupler are ignored.

    Note: If the user is not familiar with the exact locations of these points, the "F3" button (third button from the left under the "?" icon) can be pressed to see an example. This additional guidance is available anytime the "?" icon is visible.

    Show/hide table

    Illustration 52	g03674458

11. Measure and enter the distance from Point (G) to Point (J). Follow the same steps as described previously for entering this dimension and press "OK" to continue.
    Show/hide table

    Illustration 53	g03674531

12. Measure and enter the distance from Point (G) to Point (Q). Follow the same steps as described previously for entering this dimension, and press "OK" to continue.

    Note: Point (Q) is located on the heel of the bucket. Point (Q) is not used for guidance but for the "Linkage Elevation Monitor" feature. Point (Q) can be selected based on the discretion of the user as the point that has the potential to be the highest point of the machine in certain linkage positions.

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    Illustration 54	g03674982

13. Measure and enter the distance from Point (J) to Point (Q). Follow the same steps as described previously for entering this dimension, and press "OK" to continue.
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    Illustration 55	g03675133

14. Measure and enter the width of the bucket. Follow the same steps as described previously for entering this dimension, and press "OK" to continue.
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    Illustration 56	g03675160

15. Align Point (G) vertical with Point (J). A plumb bob can be suspended from Point (G) and the bucket can be curled until Point (J) is directly below Point (G). Once the bucket is positioned correctly, press the "OK" button to continue.
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    Illustration 57	g03675201

    Note: A plumb bob may be utilized to ensure that the bucket cutting edge/floor is vertical in this step instead of a bubble level.

16. Attach a magnetic bubble level to the floor of the bucket and curl the bucket or hang a plumb bob over the back of the bucket until the floor is vertical. Once the bucket is positioned correctly, press the "OK" button to continue.

    Note: Positioning the bucket with the floor vertical will capture the angle of the bucket for future wear compensation.

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    Illustration 58	g03675204

17. Define an initial length of the bucket teeth or cutting edge. This dimension is utilized for the "Tooth Wear Compensation" feature. When measuring Length (J) - (J1), Point (J1) is located at the discretion of the user. Follow the same steps as described previously for entering this dimension, and press "OK" to continue.

    Note: The user should select a measurement location that is not likely to be affected by bucket wear. For example, it is not advised to measure from the cutting edge to the tip of a tooth because the cutting edge can also wear over time.

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    Illustration 59	g03675227

    Note: If the bucket being measured is not a tilt bucket, the following steps related to the tilt function will not appear in the calibration.

18. Level the tilt axis by curling the bucket. A magnetic level can be attached to the end of the tilt axis pin to show when the axis is level. Once the bucket is positioned correctly, press the "OK" button to continue.
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    Illustration 60	g03675246

19. Use a bubble level and position the cutting edge so that the bubble level is perfectly horizontal. Once the bucket is positioned correctly, press the "OK" button to continue.
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    Illustration 61	g03675452

20. With the tilt axis level and the cutting edge level, measure and enter the distance from Point (J) to Point (K). Depending on the bucket shape, a square can be used to assist in obtaining Length (K-J). Follow keypad number entry steps to enter this dimension, and press "OK" to continue.
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    Illustration 62	g03675459

21. Raise the left bucket tooth by around 304.8 mm (1.00 ft). This height allows the system to learn the orientation of the sensor on the bucket. Once in the correct position, press the "OK" button to continue.
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    Illustration 63	g03675479

22. If the bucket was positioned correctly, then pressing the "OK" button will complete the calibration. Press the "Return" button to exit the procedure.

Editing a GRADE Work Tool for Wear

The work tool measure-up process supports a feature which allows the user to edit one simple dimension allowing the machine to adjust the bucket dimensions to compensate for physical wear that occurs on the bucket cutting edge or teeth.

Note: This wear dimension must be measured always from the original reference point for all wear dimension edits.

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Illustration 64	g03688730

1. To edit the wear on a bucket, enter the main menu and select "Work Tools"

2. Press the F3 (the third soft key from the left - Tool Dimension icon) to open the bucket dimension screen.
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   Illustration 65	g03689215

3. Scroll down and select Length "J-J1".
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   Illustration 66	g03689012

4. Enter length J-J1 with the new distance measured from the original measure-up point on the bucket to the cutting edge of the bucket. Use the up/down arrows to adjust the measurement or type in the measurement using the switch console when in numeric entry mode. When the measurement is correct, press the "OK" key.

   Note: If the original measure-up point for J1 is not used, inaccuracy can be introduced into the system. In some cases, the current Length J1 - J value before editing may provide some indication of the J1 point used on the bucket.

Accessing the Technician User Interface (Tech UI)

The EC520 Controller is not configurable from Cat^® Electronic Technician (Cat ET) and must be configured using a web portal called the Technician User Interface (Tech UI). The Tech UI can be connected to the EC520 Controller in three different ways, which are explained below:

• using the supplied GRADE display in the cab which connects directly to the EC520 Controller via Ethernet wires.

• using a service connector to connect a laptop computer directly to the EC520 Controller via Ethernet wires.

• using a WiFi network configured on the EC520 Controller to connect a service tablet via the wireless network.

Note: The EC520 Controller first arrives with the WiFi network disabled. The WiFi network must be enabled first through an Ethernet wired connection in order to connect via the wireless method.

The GRADE display is preloaded with the GRADE application. The operator and the Web UI application for the technician can access the Tech UI and the GRADE display is wired directly to the EC520 Controller. Starting the Web UI app will access the Tech UI by directing the GRADE display to the EC520 Controller webpage located at "192.168.168.1".

Illustration 67	g06224115

Illustration 68	g06224118

The Tech UI can be accessed without use of the Web UI app by entering the IP address ("192.168.168.1") into a web browser but the device (tablets or laptop) must be wired directly to the EC520 Controller via Ethernet until the wireless is enabled.

When first accessing the EC520 Controller, the "admin" user must be set up. Choose a password and do not forget this password.

Note: The only way to recover access to the EC520 Controller with a forgotten password is to reset the device, which causes all onboard data to be lost.

Illustration 69	g06282418

Once the initial setup or returning login credentials are entered, the page will land on the main Tech UI page. Once this happens, the following should be completed with the machine setup.

• Verifying Licenses

• Enter operator and technician credentials

• Enable and configure wireless (if desired and supported)

• Configure the GNSS Radio

Verifying Licenses

Illustration 70	g06290251

When the web UI is accessed for the first time, the licenses on the system should be verified. If the list is blank, the licenses should be added. Obtain the license files and select "Add License File".

If any of the following listed licenses is missing from a factory machine, contact the Dealer Solution Network (DSN) to obtain the necessary licenses.

• Core License – Excavator

• Module License – 3D Guidance (available only on the 3D GRADE option).

• Module License – Infield Designs

• Software Maintenance Until XX XXX XXXX

• Left GNSS Receiver (available only on the 3D GRADE option).

• Right GNSS Receiver (available only on the 3D GRADE option).

The license tile will appear black as all the licenses have been properly configured in the Web Interface.

The above licenses will be available on the Cat GRADE machines from the factory.

Licenses Information

The 2D Advanced and 3D Cat GRADE system options require a specific license to be installed on the EC520 controller, for the GRADE system to be operational.

Machine ordered from factory with a factory installed 2D Advanced or 3D GRADE system will be shipped from factory with the proper licenses installed.

On the factory installed 2D Advanced GRADE option, all required licenses are installed on the EC520 controller from factory. On the factory installed 3D GRADE system option, the required licenses are also installed on the EC520 controller except for the right and left GNSS receivers. The required licenses are installed on the physical hardware.

All the factory installed GRADE 2D Advanced and the 3D licenses has a five years software maintenance. This will start from the acceptance of User License Agreement (ULA) message on the display.

The licenses could be view from the Web, Operator, and the Tech UI (User Interface).

Illustration 71	g06290260
(9) Licenses tile

To view the licenses from the Operator UI, Press the "Licenses" tile from the main menu. All installed licenses on the EC520 controller and the right and left GNSS receivers will be displayed on the TD520 display.

Illustration 72	g06290270
(10) Advanced option (11) Licenses

To view the licenses using the Web or Tech UI press the "ADVANCED" option (10) from the left menu bar then select the "Licenses" (11). The installed licenses will be displayed on the TD520 display or the PC.

Licenses Structure

The 2D Advanced GRADE licenses structure is listed below:

• Core License - Excavator

• Module License – Infield Designs

Note: The software maintenance has five years of a free update, the date starts from date of acceptance of the Software License Agreement (SLA).

The 3D GRADE licenses structure is listed below:

• Module License - 3D Guidance

• Left GNSS Receiver

• Right GNSS Receiver

The factory installed GRADE system option (2D Advanced & 3D) licenses are listed in Table 39.

Table 39

Next Gen Cat GRADE Factory Options Licenses
License Name	2D Advanced Option	3D Option
Core License - Excavator	Yes	Yes
Module License - Infield Designs	Yes	Yes
Module License - 3D Guidance	No	Yes
Right GNSS Receiver	No	Yes
Left GNSS Receiver	No	Yes

Enter Operator and Technician Credentials

To configure the operators and technician credentials use the "User Permissions" interface to Add, Edit, or Delete users.

Illustration 73	g06282353

To access the User Permissions from the Tech UI, select the "Advanced" menu and then "User Permissions" submenu. In the "User Permissions" interface, users can be added, edited, or deleted. The "admin" has Technician and Management permissions, by default meaning the "admin" user can access the Tech UI and make changes to the User Permissions.

To set up an operator for the GRADE app, select "+Add" and give a name, password, and assign operator permissions. If desired, Technician and Management permissions can be granted to an operator.

Illustration 74	g06224122

Illustration 75	g06224124

The password can be turned off for the operator interface through the GRADE app by turning "Require Operator Password" to OFF. Not requiring a password will impact all the operators in the list and none of the individual operators will be required to enter a password when accessing the GRADE interface.

Enable and Configure Wireless (if Desired and Supported)

The wireless can be enabled and configured so that a wireless device can connect to the EC520 Controller through the Tech UI.

Illustration 76	g06282379

To enable and configure the wireless network, select the "Configure" menu and the "Wi-Fi Network" submenu. In the "Wi-Fi Network" interface, the Channel, SSID, and Password can be set for the Wi-Fi network by entering the values then pressing "Save". The network can be enabled by toggling the switch "Active" for the Wi-Fi Network.

Configure the GNSS Radio

The active GNSS Radio is selected via the operator interface in the GRADE app, but the system connectivity must be configured in the Tech UI. The connectivity of the system will define the available options, over which the system can obtain GNSS corrections to obtain a high accuracy RTK GNSS fixed position.

Illustration 77	g06282355

To configure the "Connectivity", select the "Connectivity" menu. This will provide an interface within which a Trimble SNM940 or a Trimble SNRxxx cellular radio may be configured. Currently, this system supports only Trimble SNRxxx and SNM940 radio modems. Support for third-party radio modems will be provided with future software releases.

Body Calibration and Vector Measurements

Body Calibration

Illustration 78	g06224128

The Body Calibration must be completed using the Installation Assistant in the Tech UI to the EC520 Controller.

Illustration 79	g06166013

For the Vector Measurement to be accurately calculated in the Installation Assistant, it is important to have the Body Inertial Measuring Unit (IMU) accurately calibrated. The first step of the Body IMU calibration is to position the machine on a stable slope greater than 2 degrees.

Note: The Body IMU Calibration in the Installation Assistant must be completed in addition to the Body Tilt Calibration described earlier.

Illustration 80	g06166014

The process of calibrating the Body IMU requires rotating the machine though eight equally spaced positions during a full body rotation. At each one of the positions the machine must stop and capture IMU data for the final calibration. The display will guide operator where to stop with swing direction arrows and stop symbols.

Illustration 81	g06166016

The display will provide indication when the data has been successfully captured for that position.

Illustration 82	g06166018

After successfully capturing Body IMU data at all eight positions, the calibration will successfully complete.

If the Body IMU data is not self-validating, the Install Assistant will provide a failure indicator and the process must be completed successfully.

Vector Measurements

The Vector Dimensions can be calculated using the Install Assistant for the 3D Sensors.

Illustration 83	g06166019

Select "Start" for the 3D Sensors to complete the calibration process in the Install Assistant for the GNSS Receivers and Antennas.

Illustration 84	g06166020

The default measurements are populated based on manufactured dimensions for the model, but this process will calculate all the dimensions needed by the GNSS Receivers and determine the Center of Rotation (COR) for the machine.

Illustration 85	g06282381

Setup conditions require full extension of the boom, stick, bucket linkages, and full 360 deg rotation. In order for the GNSS Receivers to obtain the best signal possible, the machine must have a clear view of the sky.

Illustration 86	g06282382

The GNSS Receivers and Antennas must be plugged into the system for this process to calculate the required dimensions. The quality of the GNSS signal is important so the closer the GNSS correction source, the better the signal will be. A local base for GNSS corrections is recommended as an internet feed of GNSS corrections will be less accurate.

Illustration 87	g06282383

The system will evaluate the projected accuracy of the GNSS signal. For calibration purposes, a GNSS signal with projected error less than 50.00 mm (0.164 ft) is acceptable.

Illustration 88	g06282384

To capture the required data for the system to generate the required GNSS Receiver/Antenna and Center of Rotation dimensions, the machine must be rotated.

1. Slowly rotate the machine at a constant speed, avoid the following:

   • Sudden movements or bumps

   • Stopping and starting

   • Only rotate – do not move the bucket, stick, or boom from their current (starting) positions

2. These make 4 full rotations, continue to rotate until complete.

Illustration 89	g06282385

The system will indicate when sufficient data is acquired for the Center of Rotation dimensions to be calculated.

Illustration 90	g06282387

After the data for the Center of Rotation is captured, the machine must be placed in a static position with the linkage fully extended and the attachment tip touching the ground.

Illustration 91	g06282388

The positions of both GNSS Receivers/Antennas are recorded in this position before proceeding to the next step. It is essential that the machine remain stationary through this data capture activity and through the next step as well.

Illustration 92	g06282394

The system will indicate when sufficient data is captured for this static position.

Illustration 93	g06282396

Keep the machine stationary and place the measure up cable to the tilt bucket connector on the stick linkage.

Illustration 94	g06282397

Disconnect the right receiver from the mast and rear harness and connect the receiver to the measure-up cable that is connected to the tilt bucket connector. Mount the receiver on a pole and position at the center point of the attachment. Make sure that the pole is vertical.

Illustration 95	g06282398

The system will capture data from this position for a period of time until sufficient data is acquired.

Illustration 96	g06282399

With the receiver and cable still attached, move the range pole to the boom pin. There is a punch mark on the top of the boom sensor plate directly above the boom pin center line. Place the range pole with the pointed tip in the punch mark and secure the range pole for the stationary data acquisition. Ensure that the range pole is vertical and add the Pin Center Vertical Offset to the range pole height.

Illustration 97	g06185766

Table 40

Model	Pin Center Vertical Offset
312F/313F	57.3 mm (2.26 inch)
330F/336FXE/349F/352F	64.8 mm (2.56 inch)

The horizontal offset from the centerline of the boom to the punch mark on the boom sensor plate should be measured.

Illustration 98	g06282400

The pole height (which will differ from the center attachment position) offset and lateral offset will be entered on the next page after the reading has been taken

Fixed Sensor Initialization

Before starting the fixed sensor initialization process ensure that the following instructions are implemented:

1. Place the machine on stable ground.

2. Fully rest the bucket on the ground.

3. Increase the engine speed to the maximum setting.

4. Ensure that the engine temperature gauge is showing the normal operating temperature.

Follow the below process to initialize the fixed sensor:

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Illustration 99	g06270963

Note: When the fix initialization is completed, a green circle with a check mark sign before the term "Complete" appears in the "Fixed Sensor Initialization" field. The fixed sensor initialization completed date will appear below the term "Complete".

1. To start or restart the fixed sensor initialization process, press the highlighted "Start" or the "Restart" menu option on the "Fixed Sensor Initialization" field.
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   Illustration 100	g06270964

2. The fixed sensor initialization start-up menu appears. The fixed sensor initialization menu contains information and advisory messages. Press the "Start" field located in the bottom right corner to start the fixed sensor initialization processes.
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   Illustration 101	g06270967

3. Position the front linkage as show in Illustration 101. Ensure that all the instructions listed on the menu screen (take stationary reading) are completed before proceeding with Begin Reading step.

   The "Take Stationary Reading" instructions are listed below:

   • The machine is on stable ground

   • The attachment is on the ground

   • The throttle is up to the maximum revs

   • The machine engine is at normal operating temperature.

   Note: The "Take Stationary Reading" instructions may take less than a minute. Ensure that the machine remains stationary during this step.

4. Press "Begin Reading" button located on the bottom right corner of the fixed sensor initialization menu.
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   Illustration 102	g06270968

5. When the green progress circle is completed and the green check mark appears in the middle of it, press "Next" located on the bottom right corner of the menu.
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   Illustration 103	g06270969

6. When the fixed sensor initialization step is completed a green check mark in the circle and term "Complete" will appear on the menu as shown in Illustration 103. Press "Save & Finish" to save the reading.
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   Illustration 104	g06270970

7. When the fixed sensor initialization step is completed, a green circle with a check mark sign before the term "Complete" appears in the "Fixed Sensor Initialization" field. The fixed sensor initialization completed date will appear below the term "Complete". Refer to Illustration 104.

Verifying 2D and 3D Guidance Accuracy

To verify the machine dimensions, use either two known good points or use a GNSS survey tool to measure points.

1. Park the machine on an even surface that has a clear view of the sky.

2. Press the Next key until the second text window appears that shows "Northing", "Easting", and "Elevation".

3. Verify that the GRADE display is set for "Bucket: Center".

4. Place the front linkage in the air and swing the machine 90+ degrees or track the machine forward approximately 1 m (3.3 ft) to ensure that the GNSS receivers have an RTK fixed position and location history.
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   Illustration 105	g06183285

5. With the bucket near the tracks, place the "Bucket: Center" focus point on the known location.

   Note: The known location may be replaced with a surveying rover except the linkage can obstruct a clear view of the sky and satellites without getting multi-path from signal reflections.

6. Note the values of the Northing, Easting, and Elevation from the GRADE display for the center focus point of the bucket.

7. Compare the values from the known point (or the surveyed point) and the values that are shown on the GRADE display. The values should be within two tenth of a foot.
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   Illustration 106	g06282401

8. Illustration 106 shows the Northing, Easting, and Elevation for the focus point of the bucket. The focus point is shown with the center selected.

   Note: The GRADE display rounds off the values. The survey tool will carry out the values to more digits. If the values are not within two tenth of a foot, then the calibration and measure-up process will need to be repeated.

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   Illustration 107	g06183286

9. Repeat Step 5 through Step 7 with a known (or surveyed) point near full reach of the front linkage.

   Note: Two known survey points may be used and will provide a good evaluation of the system but one known survey point may also be used if the machine position is moved to reflect the linkage positions shown.

Function Checkout

1. Press the arrow keys until "Diagnostics" is highlighted

   Note: "Diagnostics" is always the last item in the list.

2. Press the "OK" key.

   A screen appears showing all the devices that are detected.

3. Verify that all the following components are found and configured:

   • GRADE display

   • Cat ECM

   • Radio

   • EC520 Controller

   • Chassis IMU

   • Left and right GNSS receivers

4. Create a level plan or select a design by accessing the "Setup Menu > Configuration Menu", select "Design". Refer to the Operation and Maintenance Manual, M0077726, "Cat^® Grade Control for 2D and 3D Excavators".

5. If the machine checkout is "OK", then proceed to Section "Backup GRADE System Data".

Backup GRADE System Data

Save Machine Settings File

Note: This file should be stored in a safe place to help in the recovery of machine settings in the event of changing or replacing the EC520 Controller.

1. With the GRADE display powered and Cat GRADE application running on the screen, insert a USB flash drive into the USB port on the GRADE display.
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   Illustration 108	g06183289

2. A File Transfer screen will automatically appear. Select Transfer Type "Export Files FROM Machine" and press "Next".
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   Illustration 109	g06183294

3. For the.machine file, check the box for Earthworks Data and press "Export".

   Note: Production Data will also include useful runtime data from the machine.

4. Save the.machine extension file that was transferred to the USB flash drive in a safe location for this machine.

   Note: The files will be stored within the "ProjectLibrary\EarthworksData" folder under the machine name.

Note: The 3D measure-up dimensions of the machine related to the GNSS Receiver locations are stored in the R2. If the R2 is replaced during machine service without saving a Machine Setting file, measuring the GNSS Receiver locations will be required.

Save Implement ECM Replacement File

1. Connect Cat ET to the machine and select the Engine ECM.
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   Illustration 110	g06097534

2. Click the Service tab, Copy Configuration selection, and select the ECM Replacement option. Refer to Illustration 110.

   Note: The 2D measure-up dimensions of the machine are stored in the Machine ECM. If the ECM is replaced during machine service, measure and calibrate the machine again if the Machine ECM configuration data is not downloaded and saved.

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   Illustration 111	g03797678

3. Click the "Yes" button to acknowledge that the data must be loaded from the ECM.

4. Acknowledge the Implement ECM data was loaded.

5. Select "Save to File" and name/store appropriately.