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:
- ISOThe International Organization for Standardization (ISO ) is an international standard-setting body composed of representatives from various national standards organizations. Founded on 23 February 1947, the organization promotes worldwide proprietary,… More 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.
