PLATE AS 3249778 - Caterpillar

Illustration 3 g01109176
AccuGrade system in Manual stateAuto
When the Auto button (left button/trigger out) is pressed, and the status indicator shows Auto in green, the automatic controls are activated and are in use.In Auto state, the AccuGrade GPS system controls the lift and the tilt movements of the blade.Note: If Auto flashes in red on the status indicator, the AccuGrade GPS auto system is in the Inactive-Auto state. Automatic controls are disabled.The Cross-section View in Illustration 4 shows the AccuGrade system in Auto state.
Illustration 4 g01109177
AccuGrade GPS system in Auto stateAutomatic controls will stop operating when the cut and fill value for either blade tip exceeds 0.2 m (8 inches). Automatic control of the blade resumes when the blade tips are both within 0.2 m of the working surface.Inactive-Auto
When the Auto button (left button/trigger out) is pressed, and Auto flashes in red on the status indicator, the automatic controls are set to Inactive-Auto state.In Inactive-Auto state, the automatic controls of the AccuGrade GPS system are disabled. Horizontal and vertical guidance are still provided through the CD550A display and light bars. Inactive-Auto state indicates that the operator has attempted to activate the automatic controls, but the system is not able to drive the automatic controls.Controls enter the Inactive-Auto state if any of the following situations occur:Note: When turned on, the beeper will sound for these conditions.
A device can no longer be detected.
The automatic valves have not been driven (the valves have been inactive) for 60 seconds or longer.
CD550A display starts (when the Auto/Manual switch is set to Auto).
No design is loaded.
Designs are changed.
The machine is off the design for more than 60 seconds.
You access the Alignment, Horizontal Offset or Elevation Offset dialogs.
You access the "Setup Menu - Configuration", including automatic entry into the Diagnostics dialog.
Any required AccuGrade GPS component stops working.
You receive low accuracy GPS positions.
The CD550A display shuts down.
The park brake is on.
The implement lock-out switch is on.
The valves have not been calibrated.In order to change from Inactive-Auto state to Auto complete the following steps:
Correct any safety condition or start-up errors such as:
The park brake is on.
The implement lock-out switch is on.
Press the Auto button (left button/trigger out).In order to change the automatic control state to Manual, press the Manual button (right button/trigger out) at any time.Unknown
When the CD550A display receives no information about the state of the automatic controls, the automatic controls change to the Unknown state. When this occurs, check the A4:M1 control module.Using Automatic Controls
Before you can use automatic controls, make sure that you complete the following actions:
Configure the automatic controls.
Complete the start-up checks. For more information, refer to the Light Bar Section.
Pass the safety checks.
Turn off the implement lock-out switch.
Turn off the parking brake.
Press the Auto button (right button/trigger out).Caterpillar recommends that you remain in Manual state until the following conditions are met:
All start-up checks are done.
You are on design.
You are ready to start using automatic controls.A typical sequence of actions to prepare AccuGrade GPS for a job using automatic controls is outlined in the following steps:
Create