FJD Trion GC100L | 3D Grader Guidance System

The GC100L puts the design in the cab of a grader without taking the blade out of the operator's hands. It suits contractors and councils who want to cut pegging and grade checking on subgrade, pads, roads and tracks, and want to start with guidance before deciding on automatic control.

It runs on the same platform as FJD's GC100 automatic grader control (sold as the H36 PRO until 2026), with the same tablet, software and workflow. The difference is that the GC100L shows the operator where the blade is and doesn't drive the hydraulics.

What Changes on the Job

• Fewer pegs and less checking. The design and the blade position are on the screen, so the operator can see what's left to cut or fill.
• Fewer passes. Getting close to grade earlier means less trimming and less material moved twice.
• Less wait on the surveyor. Once the design is loaded, the grader can keep working while set-out happens elsewhere.

How It Works

GNSS antennas give the grader's position, and tilt sensors (IMUs) on the body and blade give its attitude. The control box works out where the blade's cutting edge is and the 10.1-inch tablet shows it against the design with cut/fill figures. The operator controls the blade.

Guidance Now, Automatic Control Later

FJD designed the GC100L to upgrade to GC100 automatic blade control by adding a control module. Valve, relay and CAN bus options suit hydraulic and electro-hydraulic graders. We're starting with guidance, so ask us if automatic control is on your radar and we'll talk you through it.

Designs and Coordinate Systems

Import DWG, DXF, SHP, KML or XML designs, or build slopes, depths and elevations on the tablet. Since FJD's 2026 software update, you can load several designs into one job and switch between them. More than 6,000 coordinate systems are built in. FJD's TerraMind cloud platform lets the office plan jobs, send designs and watch progress.

Corrections

The system takes RTK corrections over 4G from a network service (subscription, or Geoscience Australia's free AUSCORS streams), or by UHF radio from your own base station (410–470 MHz or 902–928 MHz). The antennas need a clear view of the sky.

Fitting and Calibration

FJD quotes about 15 minutes to calibrate. The system is meant to suit a broad range of graders, but FJD doesn't publish a make and model list. Send us your machine details and we'll confirm the fit.

What We Need to Quote

Send us the grader make, model and year, whether it's hydraulic or electro-hydraulic, and how you'll get corrections (network or your own base). We can arrange installation, calibration and operator training.