In the case of specific mining methods are used, such as sub-level stopping or block caving, ore needs, in some situation, to be loaded from unsupported areas. It can create hazardous situation as there is a risk the roof collapse on the loader, and smash or trap the operator.
To mitigate those hazards, and to make the loader available for loading in an unsupported area, Sandvik has developed Radio Remote Control (RRC) system to operate the unit from line-of-sight distance.
Line of sight system: the operator must see the loader under his/her control at all times. During RRC operation, the gears are limited to the first gear. Optional camera system can be added to improve the visibility of the operations.
The RRC system requires a safe operating place for the operator that controls the unit (mine responsibility). The transmitter is compact and light to carry (about 2.0kg with battery) but still durable. It is equipped with a tilt switch for operator safety.
Frequencies: 2.4 GHz as standard, other frequencies available on request, depending on local country specific regulations.
The Radio Remote Control System is frequently associated with Recovery System to be able to remove safely the loader in case of roof collapse.