2.6. Risk Assessment
Description The risk assessment is a legal requirement, that shall be performed by a 3rd party
integrator, or by the user of the UR robot in the role of integrator.
The robot itself is partly completed machinery, as the safety of the robot installation
depends on how the robot is integrated (E.g. tool/end effector, obstacles and other
machines). It is recommended that the party performing the integration use ISO 12100
and ISO 10218-2 to conduct the risk assessment. Integration can apply Technical
Specification ISO/TS 15066 as additional guidance. The risk assessment shall
consider all work tasks throughout the lifetime of the robot application, including but
not limited to:
•
Teaching the robot during set-up and development of the robot installation
•
Troubleshooting and maintenance
•
Normal operation of the robot installation
A risk assessment must be conducted before the robot arm is powered on for the first
time. A part of the risk assessment conducted by the integrator is to identify the proper
safety configuration settings, as well as the need for additional emergency stop
buttons and/or other protective measures required for the specific robot application.
Risk @ Robot Identifying the correct safety configuration settings is a particularly important part of
developing collaborative robot applications. See chapter and part for detailed
information.
Some safety functions are purposely designed for collaborative robot applications.
These features are configurable through the safety configuration settings and are
particularly relevant when addressing specific risks in the risk assessment conducted
by the integrator:
•
Force and power limiting: Used to reduce clamping forces and pressures
exerted by the robot in the direction of movement in case of collisions between
the robot and the operator.
•
Momentum limiting: Used to reduce high transient energy and impact forces in
case of collisions between robot and operator by reducing the speed of the
robot.
•
Joint, elbow and tool/end effector position limiting: Particularly used to reduce
risks associated with certain body parts. E.g. to avoid movement towards head
and neck.
•
Tool/end effector orientation limiting: Particularly used to reduce risks
associated with certain areas and features of the tool/end effector and work-
piece. E.g. to avoid sharp edges to be pointed towards the operator.
•
Speed limitation: Particularly used to ensure a low speed of the robot arm.
User Manual 23 UR10e
2.Safety
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