Traditional robots are known and used for their ability to perform repetitive tasks with a very high cadency, providing them an important efficiency. This high cadency implies, nevertheless, very quick movements that can harm workers around the robot. Thus, it is necessary to install a fenced enclosure around it, in order to remove the potential danger.
Cobots are particular robots on which are placed additional sensors able to anticipate the presence of an operator in a precise zone and able to stop in case of a contact. This function allows a close collaboration between the robot and the humans. Unlike industrial robots, cobots do not require the installation of a fence, reducing the cost of the solution, as well as the place it requires.
This additional layer of intelligence turns the robot secure for operators and people around. Nevertheless, some risks related to the tool or the process remain (cutting station or welding for instance). It is therefore necessary to respect the strict rules in application.