Introduction to Machine Control for New Operators

Introduction to Machine Control for New Operators

For an operator who has spent years reading grade stakes, checking elevations, working from string lines or relying on a grade checker, machine control can initially seem like a major change in the way excavation work is performed.

In reality, the fundamental job has not changed.

The operator still needs to understand the machine, the material, the desired grade and how to excavate efficiently. Machine control simply gives the operator better information inside the cab, allowing many measurements that were traditionally performed manually to be viewed while the machine is working.

For new operators, understanding that distinction is important. Machine control is not intended to replace operating skill. It is a tool designed to help an operator understand where the bucket or cutting edge is relative to the desired grade, depth or slope.

Once an operator understands the basic principles, machine control can become a straightforward and extremely useful part of everyday excavation.

What Is Machine Control?

Machine control is a broad term used for technology that helps equipment operators measure, visualize and work toward a desired grade, elevation, depth or slope.

On an excavator, for example, sensors can track the movement and position of the machine's boom, stick and bucket. The system uses that information to calculate the position of the bucket cutting edge.

That information is then presented to the operator on an in-cab display.

Instead of repeatedly stopping excavation to physically check the grade, the operator can receive continuous guidance while working.

A machine-control display can help answer one of the most important questions an operator faces:

Where is my bucket in relation to the grade I am trying to achieve?

Depending on the system and application, the operator may be able to see whether the bucket is above grade, below grade or approaching the desired elevation.

That turns grade information into something the operator can use throughout the excavation process rather than only when a measurement is manually taken.

Machine Guidance vs. Automatic Machine Control

One of the first distinctions a new operator should understand is the difference between machine guidance and systems that automatically control portions of a machine.

They are not the same thing.

A guidance system provides information to the operator. The operator remains responsible for controlling the machine.

The system can show the operator where the bucket is relative to the target, but the operator continues moving the joysticks, controlling the boom and stick, positioning the bucket and deciding how to approach the excavation.

This is an important concept for someone learning machine control.

The technology provides information. The operator still operates the machine.

That means experience, judgment and good operating technique remain extremely important.

Understanding the Basic Display

A machine-control display can look complicated the first time someone sees it. There may be numbers, icons, machine graphics, reference lines and other information on the screen.

The key is not to try to understand everything at once.

Start with the information that directly affects the work being performed.

For a typical excavation task, one of the most important pieces of information is the relationship between the bucket and the target grade.

Imagine that the target represents zero.

If the system indicates that the bucket is above that target, additional material may need to be removed.

As the bucket approaches the target, the displayed difference becomes smaller.

Once the operator reaches the desired elevation, the display indicates that the bucket is at or very close to the established grade.

The exact presentation varies by machine-control system, but the principle is fundamentally the same:

The operator is receiving continuous information about the position of the working tool relative to the target.

What Does “Grade” Mean?

Before using machine control effectively, an operator needs to understand what the system is measuring.

Grade can refer to several things depending on the job.

It may be a specific elevation.

It may be a certain depth below an established reference.

It may be a slope.

It may also be part of a more complex surface or design when working with advanced machine-control technology.

For a new operator, it is often easiest to begin with a simple depth or elevation.

For example, suppose an excavation needs to be performed 4 feet below an established reference point.

The operator establishes the appropriate reference in the machine-control system and then uses the display to monitor progress toward the target depth.

The machine still performs exactly the same physical excavation.

What changes is the operator's access to information.

Why Traditional Excavation Requires So Much Measuring

Consider how excavation has traditionally been performed without machine control.

An operator removes material.

The grade is checked.

The operator removes more material.

The grade is checked again.

If additional excavation is required, the machine goes back to work.

Then the grade may need to be checked again.

Every interruption takes time.

Depending on the project, checking grade may involve grade stakes, lasers, measuring rods, string lines, survey information or another person outside the machine.

None of these methods are inherently wrong. They have been used successfully throughout the construction industry for decades and may still be necessary for verification and other tasks.

Machine control changes how frequently an operator needs to depend on those external measurements during normal excavation.

Instead of operating with limited information between grade checks, the operator can have continuous guidance available in the cab.

Why This Matters to an Operator

The most obvious benefit is efficiency, but there are several practical reasons operators use machine-control technology.

Fewer interruptions

Every time an operator needs to stop and wait for a grade measurement, productive excavation is interrupted.

Having grade information available in the cab can reduce those interruptions.

Better awareness

The operator can see the relationship between the bucket and the target while excavating rather than relying solely on visual judgment.

Reduced risk of over-excavation

Removing too much material creates additional work.

The over-excavated area may need to be corrected with additional material and compaction, depending on the application.

Continuous guidance can help the operator recognize when the bucket is approaching the target before unnecessarily removing additional material.

More consistent results

When an operator has continuous grade information, it becomes easier to work systematically toward the target.

Greater operator independence

Machine control can reduce an operator's dependence on another person continuously checking grade during excavation.

That does not eliminate the need for surveyors, grade checkers or project verification. It simply gives the operator more information to perform the excavation.

Learning to Trust the Information

One of the biggest adjustments for a new machine-control operator is learning to use the display without becoming completely dependent on it.

An experienced operator naturally watches the bucket, the machine, the material and the surrounding work area.

That should not change.

The machine-control display is another source of information—not a replacement for situational awareness.

New users sometimes make the mistake of concentrating too heavily on the screen.

A better approach is to develop a natural rhythm.

Operate the machine.

Watch the work.

Reference the display.

Understand what the guidance is telling you.

Continue operating.

Over time, checking the machine-control information becomes part of the normal operating process.

The Importance of Establishing the Correct Reference

Machine control can only provide useful guidance when the system has been correctly set up for the work being performed.

If the wrong reference, depth or slope is entered, the system can accurately guide the operator toward the wrong target.

That is why setup matters.

Before excavation begins, the operator should understand:

What is the reference?

What is the required elevation or depth?

Is a slope required?

Has the system been properly configured?

Is the bucket or attachment being used correctly represented in the system?

Has the setup been verified before production work begins?

The screen should never replace basic jobsite understanding.

An operator should know what they are trying to build before asking technology to help them build it.

Bucket Selection Matters

Excavators frequently use multiple buckets and attachments.

Different buckets can have different dimensions and geometries. A machine-control system needs the correct information for the attachment being used so that it can properly calculate the position of the cutting edge.

For a new operator, this creates an important habit:

Make sure the machine-control system is configured for the attachment actually installed on the machine.

Changing the physical bucket without making the appropriate change in the machine-control system can affect the guidance being displayed.

Correct setup should always be confirmed before relying on the information for excavation.

Understanding Slope

Not every excavation is flat.

Operators routinely work on drainage, ditches, embankments and other applications where a specified slope is required.

Machine control can help the operator visualize and maintain that target.

Rather than relying entirely on intermittent measurements, the operator can use the guidance system to understand the relationship between the bucket and the desired sloped surface.

For someone learning machine control, however, it is often useful to become comfortable with simple depth and elevation work first.

Once the basic relationship between the bucket, reference and target becomes intuitive, working with slopes becomes easier to understand.

2D Machine Control

A 2D machine-control system generally works from references established at the jobsite.

The operator may establish a benchmark or reference and then enter the desired depth, elevation or slope.

The system then tracks the machine's geometry and provides guidance relative to that established target.

For many everyday excavation applications, this can provide operators with the information they need without requiring a full three-dimensional jobsite model.

Typical applications can include trenching, foundations, drainage work, grading and other excavation tasks where the desired depth or slope can be established from a known reference.

3D Machine Control

3D machine control adds another level of positioning and design information.

A 3D system can use GNSS/GPS positioning and digital design information to understand where the machine is located on the project and how the working tool relates to the designed surface.

Instead of working only from a locally established depth or slope, the machine can work relative to a three-dimensional project design.

This can be particularly valuable on larger or more complex projects where elevations and slopes change throughout the site.

For a new operator, however, the fundamental concept remains familiar:

The system is helping the operator understand where the machine's working tool is relative to where it needs to be.

The technology used to establish that relationship may become more sophisticated, but the basic operating principle remains understandable.

Machine Control Does Not Eliminate Good Operating Technique

Technology cannot compensate for poor machine operation.

An operator still needs to understand how to position the machine efficiently, control the bucket, work with different materials, maintain a stable working position and avoid unnecessary movement.

In fact, machine control can make good operating technique even more valuable.

When an operator knows exactly where the target is, the focus can shift toward reaching that target efficiently and consistently.

The best results come from combining good operators with good information.

Machine Control Is Also About Reducing Rework

Productivity is not simply about digging faster.

It is about accomplishing the required work correctly with as little unnecessary work as possible.

Consider over-excavation.

If an operator digs below the required grade, the extra excavation did not create value. Depending on the application, material may need to be brought back into the area, placed correctly and compacted.

That requires additional labor, machine time and material.

Machine control can help operators approach the desired grade more deliberately and recognize when they are getting close to the target.

The objective is not simply more excavation.

The objective is accurate excavation.

Start With Simple Applications

A new machine-control operator does not need to master every feature immediately.

A better learning process is to start with straightforward applications.

Establish a known reference.

Set a simple target depth.

Watch how the display changes as the bucket moves.

Compare what the screen shows with what is physically happening at the bucket.

Reach the target.

Verify the result independently.

Repeat the process.

This helps the operator build confidence in both the technology and their understanding of it.

Once that relationship becomes intuitive, additional functions such as slopes and more advanced applications become easier to learn.

Always Verify Your Work

Machine control is a measurement and guidance technology, but normal construction verification practices still matter.

System setup, attachment configuration, jobsite references and other inputs should be correct before an operator relies on the guidance.

Work should also be verified as appropriate for the project.

This is especially important while learning a new system.

Verification allows the operator to compare what the machine-control display is reporting with an independent measurement and build confidence that the system has been established correctly.

Technology should improve the operator's information—not eliminate sound construction practices.

What Changes After You Become Comfortable With Machine Control?

At first, an operator may consciously think about every number and indicator on the display.

With experience, the information becomes much more natural.

Instead of thinking about the technology itself, the operator begins thinking about the work.

How close am I to grade?

How much material remains?

Am I approaching the target?

Is the slope correct?

Can I finish this section without another external grade check?

That is when machine control becomes less like an additional piece of equipment in the cab and more like another operating tool.

The Operator Is Still the Most Important Part of the System

It is easy to focus on displays, sensors, GNSS receivers and software when discussing machine control.

But the most important component remains the person operating the machine.

Machine control does not understand every condition on a construction site. It does not replace an operator's judgment, awareness or responsibility.

What it can do is provide an operator with information that traditionally required additional measurements, interruptions and assistance.

Put that information in the hands of a capable operator, and the result can be a more efficient and informed way to work.

A Better Way to Know Where You Are

For someone new to machine control, the technology becomes much easier to understand when stripped down to its basic purpose.

The operator needs to know where the bucket is.

The operator needs to know where the desired grade is.

Machine control helps show the relationship between the two.

Everything else builds from that foundation.

Whether the application involves a simple excavation depth, a drainage slope or an advanced 3D project model, the fundamental objective is the same: provide the operator with better information while the work is being performed.

For contractors and operators considering machine control for the first time, the best way to understand the technology is to see it operate on an actual machine.

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Contact iDig North America at (858) GET-IDIG or visit getidig.com to connect with an Authorized iDig Dealer in your area.