CONTROL GP-EMCP ELECTRONIC 1543847 - Caterpillar

Introduction
By the default, the Valve Speed option 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.The Valve Speed dialog allows you to change the speed of the valves that automatically control the blade. Correct valve speeds depend on the type of material that you are moving (for example, sand, hard rock, or dirt) and any tasks that you are doing (for example, base grade or finished grade).If the valve speed values are set too high, the system reacts too quickly. This can cause instability in the system which may cause unnecessary work for the hydraulic machine components. The result would be short choppy waves in the surface. If the values are set too low, the system reacts too slowly. The system will not react quickly enough in order to return to an "on-grade" position. The result would be a long wavy surface.Note: The machine should be at operating RPM when testing and setting the valve speed.In order to adjust the valve speed, the AccuGrade System must have a high accuracy position. Confirm that the system is in a high accuracy mode before you attempt to adjust the valve speed. Without a high accuracy GPS position, the changes to the valve speeds cannot be tested.A temporary design surface is created for adjusting the valve speeds. The light bars will provide guidance to the temporary design surface only while the Valve Speed dialog is open.For the best valve speed setting, Caterpillar recommends that you follow the steps outlined in the following sections.Adjusting The Valve Speeds
In order to access the Valve Speed dialog, complete the following steps:
Set the Auto/Manual switch to Manual.
Raise the blade and level the blade of the machine.
Press the "Setup Menu" softkey. The "Setup Menu – Configuration" dialog appears.
From the Setup Menu – Configuration dialog, press the Down arrow or the Up arrow until the "Valve Speed" item is highlighted.
Illustration 1 g01120785
Press the "OK" key. The "Select Valve" dialog appears. Refer to Illustration 1.
Use the arrow keys in order to select the valve speed that is to be adjusted.Lift Valve Speed
Illustration 2 g01120798
Select "Lift" from the list of valves. The Lift Valve Speed dialog appears. Refer to Illustration 2.
Perform one of the following actions:
Press the Up arrow or the Right arrow in order to increase the speed. Press the Left arrow or the Down arrow in order to decrease the speed.
Press "Default Set 50" in order to set the speed to the default value of 50.The valve speed is immediately updated.If the update is not successful, a dialog appears. The dialog warns that the valve speed has not been updated, and instructs you to try again. Use the Diagnostics dialog in order to check the status of the A4:M1 valve control module. Repeat the procedure in "Setting Valve Speeds". Repeat Steps 1 and 2 in this section "Lift Valve Speed".
Move the blade until the light