Komatsu America Corp. has released the new PC390LCi-11, the first 3D semi-automatic excavator that combines the speed of the popular 36-ton weight class machines with the stability of much larger machines.
The excavator is equipped with Intelligent Machine Control, which features a unique sensor package, including stroke sensing hydraulic cylinders, an IMU sensor, and GNSS antennas.
The machine utilizes 3D design data loaded into the machine’s monitor to accurately display its 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 operators fight over on the jobsite” said Renee Kafka, product specialist for 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.”
Via Auto Grade Assist, as the operator moves the excavator arm, the boom adjusts the bucket height automatically, tracing the target surface and minimizing digging too deep. As well, Auto Stop Control help minimize design surface damage by automatically stopping boom and bucket operations when the bucket edge reaches the design surface.
With Minimum Distance Control, the excavator 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.
Furthermore, the orientation of the facing angle compass’ arrow shows the operator the facing angle, relative to target surface. This allows the bucket edge to be accurately positioned square with the target surface.
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 condition.
The Intelligent Machine Control monitor uses a large 30 cm screen for visibility and ease of use. A touch screen icon interface, instead of a multi-step menu, simplifies operation.
The semi-automatic excavator is equipped with an 8.85 litre, 257 hp, EPA Tier 4 Final, SAA6D114E-6 engine.
Komtrax Level 5 technology feeds the operator machine data, such as fuel and diesel exhaust fluid (DEF) levels, Komatsu Diesel Particulate Filter (DPF), regeneration status, location, cautions and maintenance alert information.