PIPE 1048266 - Caterpillar

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Cat Grade Control "CGC Calibrations" screen
Boom Sensor Calibration
The Boom Sensor Calibration calibrates the Boom Rotary Position Sensor for the Cat Grade Control 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.
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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 Cat Grade Control 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 24 g06135429Stick Sensor Calibration
The Stick Sensor Calibration calibrates the Stick Rotary Position Sensor for the Cat Grade Control 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