Komatsu 3D semi-automatic excavator combines machine speed, stability and 3D intelligent machine control in the operator joystick

Komatsu says that the PC390LCi-11 is the first 3D semi-automatic excavator available with the nimbleness and speed of 36-ton-weight-class machines and the stability of much larger machines. It is powered by an 8.85-litre, 257-hp, Tier 4 Final SAA6D114E-6 engine. 

Komatsu says that their 3D intelligent machine control system features a unique sensor package, including stroke sensing hydraulic cylinders, an IMU sensor and GNSS antennas. The machine uses 3D design data loaded into the machine's monitor to accurately display machine position relative to target grade. When the bucket reaches the target surface, automation kicks in to limit over excavation. 

"Whether it's production excavating, utility trenching, site prep or any application where greater over-the-side lift capacity is required, this could be the machine that operators fight over on the jobsite" said Renee Kafka, product specialist, Komatsu America. "Also, to increase operator comfort and convenience, all PC390LCi-11 machines come standard with the machine-control-enhanced joysticks first introduced on the PC210LCi-11."

Key features on the PC390LCi-11 include:
Intelligent Machine Control Joysticks 
The semi-automatic/manual, mode-switching and design-surface-offset function can be operated with switches on the control levers.

Auto Grade Assist 
As the operator moves the arm, the boom adjusts the bucket height automatically, tracing the target surface and minimizing digging too deep.

Auto Stop Control 
During boom and bucket operation, the work equipment automatically stops when the bucket edge reaches the design surface, thus minimizing design surface damage. 

Minimum Distance Control 
The machine controls the bucket by automatically selecting the point on the bucket closest to the target surface. If the machine is not facing a sloped surface at a right angle, it will still follow the target surface and minimize digging below it.

Facing Angle Compass 
An arrow on the display shows the operator the facing angle relative to target surface. This allows the bucket edge to be accurately positioned square with the target surface.

Realistic 3D Display 
The machine and design surfaces are shown in realistic 3D. The angle and magnification of the views can be changed, allowing the operator to select the optimum view, depending on work conditions.

Control Box 
The Intelligent Machine Control monitor uses a large 12-inch screen for visibility and ease of use. The simple screen layout displays the necessary information in an easily understood fashion. A touchscreen icon interface, instead of a multi-step menu, simplifies operation.

KOMTRAX level 5 technology feeds the operator machine data, such as fuel and diesel exhaust fluid levels, Komatsu Diesel Particulate Filter, regeneration status, location, cautions and maintenance alert information.