Collaborative robots have become the buzzword in industrial automation. At Universal Robots, we define ‘collaborative‘ by ease-of-use, ease of integration, and affordability, and safe. In this blog, we focus on how the safety aspect is defined by the current safety standard.
a) Safety-rated monitored stop
b) Hand guiding
c) Speed and separation monitoring
d) Power and force limiting
When it comes to the safety-rated monitored stop, the robot system stops before the human operator can access or be exposed to any hazard in the collaborative workspace. Only when there is no human operator, the robot can move as a non-collaborative robot. In other words, either the robot system or the human operator moves, not both at the same time. This method cannot utilize the advantages of collaborative operation and it requires safeguarding of a traditional industrial robot. The benefit that this offers is the ease and speed to resume automatic operation.
With respect to the hand guiding operation, the human operator uses a hand-operated device and the robot system moves based on motion commands of the operator. It is a kind of manually controlled operation in that the operator is in direct control of the robot system’s operation. This is considered automatic operation, not manual operation.