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Category: Safety

When using wire mesh fencing is there a requirement to purchase software options like FANUC DCS that would prevent the robot from sticking a welding nozzle through the openings in wire mesh fencing? It seems to me that you could have the robot stick the welding nozzle or wire through the mesh openings. Obviously we wouldn't intend anyone to program the robot that way but I am not sure if purchasing the DCS software is a requirement?

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Does ANSI/RIA 15.06-2012 or any of the associated technical reports specify anything about the location, minimum quantity, spacing, etc., of emergency stop buttons on a robot cell safety enclosure? If not, are there other standards that would cover this?

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Is there a standard for number of exits in a cell? I was told that there should be at least 2 but I can find no mention of this anywhere.

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Is the RIA 15.06 1999 risk assessment method still valid and usable for official documentation?

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I am trying to find the standard for distance of physical barriers and light curtains. If I set soft limits in my robot configurations how much buffer space Is needed? I see 20" for semi-auto. Does the 20" also apply for automatic?

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How do I know without shadow of a doubt the robot applications in my plant meet required safety compliance?

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What speed is the slow speed, teach mode in a robot? Is there only one speed? Thanks.

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Looking for input on best practices for robot cell entry. My company is large, multi-plant, and we are trying to standardize a method for operator entry for minor tasks. Narrowed this down to servo motor entry or trap key entry. Interested in pros and cons of both methods.

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We have a robot cell with perimeter guarding and an interlocked gate. When personnel enter the robot area to teach the robot, we require the use of a teach pendant and enabling pendants for everyone in the area. My question is for tasks that are performed in the cell that don't involve the robot. For example, a minor servicing task, such as cleaning. The operator opens an interlocked gate and places a lock on the gate to ensure the equipment cannot start. However, there is the potential for someone to move the equipment through the teach pendant. What would be an acceptable method of control?

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Regarding ANSI/RIA R15.06-2012, The document uses the word "fitting". For example in section 7.2.5 an example of robot system information is "...a) detailed description of the system, its fittings, its guards and /or protective devices..." What is the word fitting describing?

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Ontario, Canada. What is the preferred method (most efficient, easy to understand) of entering robot cells to clean, etc. (short term tasks to be completed by a Machine Operator). - servo motor disconnect - trap key - physical lock attached to interlock on perimeter door. - trap key

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I am accustomed to seeing an interlock and a provision for lockout on access doors on robot cells. When teaching the robot a lock is placed on the door to prevent it from closing and the interlock is bypassed by the controller's teach mode, which limits the robots speed. First, is this a safe practice? Second, is lockout while teaching a robot required by any standard?

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Does the RIA standard have any bearing over conveyors or other equipment within a cell/fence? I.E. a conveyor that runs parts into the cell so the robot can pick them up does not stop when the gate switch is opened. I believe this falls under our normal risk assessment program for every job a technician goes to, but I am being pressured form an individual to change the system to include the conveyors and clamping systems that are in the same cell. All pieces of equipment have local lock out/tag out stations including the air system for the clamps. Do you have any guidance?

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I have a question regarding perimeter safeguarding, or fencing. I remember in previous standard, that the requirement was to have 18" from the perimeter safeguarding to the programmed path of the robot in T1 APV. I don't see a similar requirement in the 2012 standard. What I do see is that it states that the perimeter safeguarding cannot be installed closer than the restricted space (5.4.2). Also, it states that perimeter safeguarding can the limiting device if it meets 5.4.3. Note 4 states that it can only be so if it does not have any hazardous deformations to the guard. So my questions are this: Is there something still in existence that looks at this from a T1 aspect of things and stipulates how far the fence needs to be from the operating space? Also, If I build my fencing to withstand a full force collision without hazardous deformation, can the fencing then be the restricted space? Thanks.

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Does ANSI require robots to be retrofit for the 2012 standard?

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I am finding nothing to solve my issue on any site or publication, maybe you can help. I have a screw running on a stepper motor and am trying to determine the distance for the Light Curtain or does it matter when using a Stepper motor as the stop is instantaneous? There is no 90 deg stop time like on a cam run machine or gear driven. I am writing up a Guarding program for my company and want to include this information. Any ideas?

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I am talking with some R&D individuals that have developed a system to detect what the composition of an object is and they are looking at applications that could be used in manufacturing (if there is something living, human or animal, in the area the machine will shut down or stop but if the object is something like steel / wood / fabric that is used in the manufacturing process the machine will continue). They wanted to know if any type of safety guarding system exists or if they should move towards other applications if they are duplicating current technology. Basic question from them was if an operator was in the area the robot or machine would stop if he is in an area of injury but would continue once he is out of harms way even if he is still in the cell.

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Per the standard, can a technician be inside the safety fence manually operating the robot in teach mode (slow)? Or does absolutely all robot movement have to be done while outside the fence and all gates closed?

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Where does the role of end user stop and integrator begin? How much can I change without assuming the role of integrator?

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Apparently there is a belief that only robots compliant with 15.06 2012 may be installed in new or upgraded cells in 2016. I am looking for a concise statement stating that as-manufactured robots compliant with the 1996 standard may be installed in new and upgraded cells in 2016—provided that the rest of the system meets the requirements of the 2012 standard. Please include reference to your credentials. Thanks.

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