11.2 | Understanding the relationship between the "As-applied" surface and the Dynamic Blade Limit

The Dynamic Blade Limit depends entirely on “As-applied” functionality. If “As-applied” is not activated or is not working properly, the blade limit will not work. To distinguish this from “Static Blade Limit”, see that section in the Limits Tab.

GPS tells T3RRA software where the cutting edge currently is, and the software also knows the original surface. With “As-applied” functionality turned on, it tracks changes to the current (“As-applied”) surface, so it knows the actual surface height wherever you are in the field. It uses this information to limit the cutting edge’s target elevation to a certain amount below or above the “As-applied” surface.

If T3RRA software loses track of the current surface, the Blade Limit will no longer work. For example, on an untouched part of a field requiring 6 inches of cut, a 2 inch blade limit means you would expect 3 passes to reach final grade. If another operator has already removed the top 4 inches, you may expect to finish in one pass. However, T3RRA software does not know that those top 4 inches are gone. On your first pass, the blade limit will keep the cutting edge two inches above the current surface; on the second pass, it will only skim the surface. The blade will enter the ground only on the 3rd pass.

T3RRA software surveys as it goes, tracking blade heights to determine the surface. Any change to the surface since the software last surveyed it will cause Blade Limit errors. Blade Limit guides the blade relative to where it thinks the dirt surface is, not where it actually is. As long as you alone change the field, those positions will be the same. If someone else makes changes, that relationship cannot be relied on.

Do NOT expect Dynamic Blade Limit to work properly if anyone other than you is working in a field OR if anyone else has worked on the job since the original surface was surveyed.