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Category: Safety

What is the minimum height of the guarding around a robot cell

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When calculating safe distance for a scanner or light curtain used for perimeter guarding of a robot, does one measure outward from the edge of the maximum operating envelope of the robot or the edge of the restricted envelope established by software?

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We are a canadian manufacturer of an autonomous weeding robot for the ag industry. What are the certifications we need to obtain given the fact the robot is autonomous and will be roaming the fields with no supervision? Thanks Luc Labbé, CEO Nexus Robotics 418-570-1196

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Is it ok to have the light curtains of a cell muted, during teach mode, without having some type of interlock partition key switch with a visual indication such as a rope with signage attached? I am concerned about having someone come in to the cell from the loading/unloading side, while teaching is being performed.

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We are building a system that has an inspection area with a knee wall and inner and outer light curtains. The inner curtains are muted unless the outer curtains are broken, then the inner curtains are active. The standard states that in this Point of Operation walk through situation, presence must be continually sensed in the area. We have used Line of Sight in the past meaning someone would have to intentionally reset the outer curtains while being able to see if someone was in the point of operation area. Is this acceptable or do we need to use a mat or horizontal curtains to continuously monitor the area?

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I am trying to understand safe distances better as I am relatively new to shared workspace. I have an application that uses a safety camera and an area scanner. I also have a shared workspace between the robot and an operator. The operator will manually load parts into the shared workspace while the robot is working on other items. The safety camera is used to divide the shared workspace and the robot operating space and the area scanner is mounted below the shared workspace. What is considered the hazard(robot, pinch points, etc.) in this situation?

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Can a robot cell door be left open when not is use - for instance when an employee goes on break, they leave the door open and the robot is not locked out? I am looking for safety guidelines on this.

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Hi, can the emergency stop be used for lock out point (controlled entry) to enter a machine cell for short term activity like cleaning, changing a weld rod, etc. Does any standard restrict such use of lock out point from ANSI/CSA, ISO standard.

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Looking at the following: https://www.outrider.ai/. It is an automated vehicle (trailer shifter) with a robotic arm. What standard(s) does this fall under? I found that there is an ANSI R15.08 Mobile Robots to be published soon. Does this apply?

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In R15.06 part 2 section 4.2, item c) reads as follows: Manual intervention – the layout should be designed to allow tasks requiring manual intervention to be performed from outside the safeguarded space. Where this is not practicable and when the intervention requires powered movements of the machine(s), appropriate enabling devices shall be provided. My question is, does free-driving the robot count as powered movement with respect to the quoted section of the standard above?

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I am trying to determine if our robot cell is considered "collaborative" or not. Within R15.06-2012, a collaborative workspace is a "workspace within the safeguarded space where the robot and human can perform tasks simultaneously during production operation". In our cell, the robot and human do not perform tasks "simultaneously", instead they perform tasks in the same space but in sequence. For example, assume there is a "Location A" within our workspace. In our operation the robot moves to Location A, then performs work and then leaves Location A, (but remains in the workspace). Then the human enters the workspace, moves to Location A and performs work, and then leaves the workspace altogether. And it is not the intention for the human to interact with the robot while the human is in the workspace, such as passing material to it, etc. However, in theory I suppose the robot CAN perform tasks simultaneously while the human is in the workspace as it is not locked out, it is simply programmed to remain stowed in a home position. So...is this considered a collaborative workspace? Our confusion/debate is centered around the phrase "can perform tasks simultaneously" and the intuition that the workspace does not feel collaborative but the standard seems to indicate that it is. Just want to make sure we are meeting the appropriate requirements. Thanks for the help.

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You come across a stress wrapper that is locked out. You see two employees working on it with their hands point of operations.. What should or should not be done?

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You come across a stress wrapper that is locked out. You see two employees working on it with their hands point of operations.. What should or should not be done?

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Under the task of "maintenance" there are inherent slip/trip/fall hazards that come with working on the robot cell. At a minimum I would think these grade as S2,E1,A1 = Medium risk level. I can't find any way to reduce this risk to the acceptable "low" or "negligible" level. Any insight would be appreciated.

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In performing a robotic risk assessment -utilizing ISO/TS 15066, there is no force / pressure limits for foot. How do you determine the risk level for the mobile robot rolling over the foot / toe? The current work environment allows sandals so there is a potential for the toe to get struck / rolled over before the bump to the leg.

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I have a Daihen OTC AX robot cell with 2 robots and 2 controllers on it. My issue is when you press the E-stop on the each pendant or start box on either unit it does not go into E-stop but my external E-stops do work fine. Any Ideas?

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How should a cell provide safe maintenance access when multiple robots are in single cell?

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How far away is a container of parts to be from a safety light curtain outside a weld cell

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What are the requirements for protecting personnel in a robot cell that has more than one robot in the cell and each robot has a teach pendant?

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Are there requirements to have awareness devices like tower lights on our robot cell? I would like to have some lights signal when the robot is in normal operation, Teach Mode, or if there is an error, but I would like a standard to provide to request the capital. Thank you, Holly

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