Collaborative robot safety training (video)

The appearance of collaborative robots has brought many changes in the field of safety. Abdullah Alhusin Alkhdur explains all the important aspects in a film that lasts just half an hour. This is a must see video for people interested in safety and human-robot collaboration (HRC) in manufacturing.

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The film is definitely worth watching, below you will find a list of topics concerning robotics safety rules discussed during the training.

Safety robotics course overview

  • Introduction
  • Safety levels in human-robot shared environment.
  • Conventional industrial setup.
  • Robotics safety regulations:
  • ISO Standards.
  • Minimum safe distance between human and robot.
  • Robot’s safe speed.
  • Safety levels for different parts of human body.
    • Safety requirements.
    • Human-robot collaboration.
    • From static to dynamic robotic safety setup.
    • Active collision avoidance.
    • Using depth sensors as a safety system.
    • Safety strategies.
    • Safety of multiple operators.

safety Regulations – ISO standard

Safety regulations: ISO Standards In order to have a safe collaborative environment for the human in the robot cell, the ISO 10218-1:2011 and ISO 10218-2:2011 criteria needs to be followed:

  • The hand-guiding equipment shall be located in the area of the end-effector.
  • The robot moves with safe reduced speed (less than 250mm/s) and safe monitored position.
  • The robot must sense and keep a safe distance from the human.

In addition to have a collaborative industrial robotic environment the ISO/TS 15066:2016 criteria need to be followed.

Safety requirements: Barrier fence

lf there is a low risk from the hazard zone, then the height of the fence should be 2500 mm or more. If there is a high risk from the hazard zone, then the height of the fence shall be 2 700 mm or more.

Entry safeguards

Interlocking Gates:

  • Switches can be mounted on the doors and interlocked with the power supply of the workcell.
  • When a door movement is detected, the switch sends emergency stop signal to the robot.

Safety mat:

  • Pressure-sensitive safety mat can be used to provide guarding for the entrance to the robot cell.
  • The mat sends a stop signal to the robot when the operator step on it.
  • The mat can be used for both entry region and around the robot as well, if needed.

Light Curtains

  • Used for protecting the operator when the robot is in operation.
  • Can be turned off when the robot cell is not operating to enable easy access.
  • It emits safe infrared light beams across the entrance, it sends stop signal to the robot when any of the beams are blocked.
  • When it is mounted horizontally, it can be configured to define different safety zones for the robot.
  • It can be configured to trigger the emergency stop based on the shape of the object blocking the beams.

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