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Category: Safety

I would like to enquire if there are any design standards and safety standards for construction robotics or are being developed.

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I have a robot which will perform welding on a metal part. Parts are loaded by hand onto a carousel which then shuttles the part into the robot operating area and places a solid steel partition between the robot and loader. It is in an enclosure that it accessed for routine maintenance and setup (i.e. changing weld tips or wire) by an interlocked door permitting someone to enter the enclosure to perform these functions. The interlock stops all hazardous movement when the door is opened. The enclosure is not overly large but large enough that someone could stand inside and have the door closed behind them. Is there are requirement that personnel must be detected in this space to prevent the door being closed behind them? If so, can you please provide a reference to this in the standard? Does it make a difference is one can see someone inside (even if it is only from the sides of the enclosure)?

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I am a safety specialist and I am trying to find any recommendations/requirements related to a robot brake test and the periodicity of such a check? I know the new KUKA robots come with an installed brake test. I write safety specifications and I am just trying to set some criteria. I would like to do more than just say "comply with the manufacturer's requirements for periiodic brake tests" if possible. Any thoughts or help would be appreciated.

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It is permissable to guard a robot using only a laser scanner to detect operator approach and stop movement or is a barrier (such as a fence) required?

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Hello, I seem to remember there being an 18 inch requirement in the RIA 15,06 standard between the robot envelope and the cage, but I cannot find it in the 2012 standard. Is this located somewhere else, or am I mistaken. Thank you

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Sir or Madam, In using the ANSI/RIA R15.06-2012 to maintain compliance I am constantly running into references to other documents. There is no explanation of the standard just a general "shall be consistent with or meet the requirements of (fill in the blank other standard). In each case, these documents are available at a significant cost. What is the purpose of assembling an all-inclusive guideline for robot integrators if all it does is point me to other documents. Very frustrating.

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I'm trying to determine if I need to have a safety rated dump valve or just a regular dump valve for an application. The dump valve is used on a shuttle table. This shuttle table is loaded by the operator, the operator pushes a button, and the table enters the cell at which point the robot unloads the table. The table is enclosed by guarding and a light curtain, so the operator is protected by pinch points. However, when the integrator/tech is teaching the robot in the cell, there may be a scenario where injury could occur. What's your thoughts? Thank you!!

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I have a robot cell with a large steel structure inside of it. The robot's workspace is inside of this structure. Access to one side of the structure is needed very rarely (maybe once a year) for maintenance on different parts of the structure. We have put "drop-n-lock" style fencing (requires a tool to lock and unlock the panels) with no movable panels (gates, etc..) on this side. Access to this area is only possible if fence panel(s) are removed. If maintenance/repair is needed, the operator will need to remove a panel (using a tool) to gain access. Is the fact that a tool is needed to do this sufficient? or do the panels that are deemed "removable" for maintenance need to be interlocked?

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I am working on safety for input conveyor where operator will feed parts and it will index one position at a time. Position where robot picks the part is inside the fence and I do have light curtain on loading side of conveyor at appropriate distance from robot (1.5 m) gripper but not so far from loading point (500mm). But there are some pinch point at loading side. So will operator process start button with combination of that light curtain would be considered safe enough? That operator run bar has process start confirmation, ESTOP and reset.

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If a Safety Professional wanted to up his knowledge of the safety protocols and opportunities in implementing a robot what would be the best course for training? Any suggestions? Also, incorporate some of the technical side?

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Is there a governing authority such as OSHA that specifies the need to have hard stops for the industrial robots used in a manufacturing facility?

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I am using small robot to teach employees how to program robots. The robot has had the auto run setting removed and will/can only be used in manual mode with the teach pendant. I am trying to figure out what other protections might be required. I am l leaning toward a fixed barrier guard enclosure with just a warning line at the entry area. In addition, employees will be trained that only a single employee can be in the enclosure. It doesn't seem logical to require a light curtain or gate at the entry since the robot is permanently in slow speed teach mode. Any advice?

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Are retractable belt fences commonly used anywhere in the world, in industry or in academia, as safety fencing for industrial robotic cells?

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Is it acceptable to use mirrors to improve visibility? We're considering a robot cell with a few blind spots. Per 15.06, the interlock reset should "have a clear and unobstructed view of the safeguarded space." Have people used mirrors successfully to address blind spots without the need for a timed reset button inside the cell or presence sensing?

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We have a Kuka KR3 R540 robot that is being integrated into an existing system for vision inspection. The mounting location for the robot is in a tight area between a table and the lexan guarding. With this is being integrated into a portion of a system that was built by a different integrator, would we need to ensure the entire line is meets RIA standards prior to installing this robot or just the station it is being integrated into? Thank you.

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We are working on a small 6-axis robot (7kg rated) application that has the safety enclosure much smaller than the robot reach. Hard stops on the axis points are not feasible for the required motion and the safety rated (Cat3, PLd) planes that can be programmed inside the enclosure are also not feasible due to safe distance calculations for "overshoot." We believe that our only option is to build an enclosure that is strong enough to contain the worst case inertia of the robot and payload, which would be coasting into the enclosure after crossing the safety plane. We can do the math to determine the inertia and can develop a simulated impact test on enclosure parts, but we don't know if there are any specific requirements, test methods, pass/fail criteria, documentation, etc. that we should be following. Is guard strength testing the correct solution for our application and is there any industry guidance on conducting this guard validation?

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During an alternate LOTO procedure, where a Auto tech places the robot cell in maintenance mode (in order to work on it and power is needed), and then enters a multi robot cell, with multiple robots with his working envelope, what is the best scenario to have total and exclusive control of these numerous robot without be able to carry numerous teach pendants. I spoke to a MIOSHA rep and suggested that we create a very detailed risk assessment for this very specific alternate LOTO procedure The practicality is, how can an Auto tech carry 6 teach pendants with him while working on one or two robots? and still have total and exclusive control of the robots in his working envelope?

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Is there a standard or best management practice or Checklist (preferred) to audit our Safety PLC controls to determine they are good during a risk assessment?

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What woul make the light curtin not work

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When training a new robot tech, we have 2 employees inside the work area. One has the pendant, in teach mode and the other is around them learning. My question is,"Does the other employee need a deadman switch?" Same thing with Maintenance personnel, "Do we need a deadman for each one in the cell?"

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