As an important part of the safety system, light curtains must be in-stalled properly to do their job. Sometimes, even in the best-inten-tioned, most skillfully executed light-curtain installation, overlooked factors may result in unsafe condi-tions. To catch these problems, man-Light curtains protect personnel from press hazards. Ifm's safety light curtains and grids consist of an emitter. Position sensors and object recognition. Light grids (shown here in a 3-beam version) protect the. To safeguard a larger area in a plant, light curtains can be placed horizontally along.
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![]() Use of horizontal light curtains at operator stationHello, I'll try and paint a clear picture of this. I am trying to determine is if horizontal light curtains are also 'needed'. I can't find anything in the standards that gives me clarity, I don't have ISO13855 though, but that appears to only deal with safe stopping distances, which I know how to calculate. Take a single robot cell with a two position turntable, sides A and B. When Side A is at the operator, the power should be removed from the sweep of the table. The robot will weld, or do whatever on side B until the operator finishes loading side A. Once the operator has left the cell and resets the curtains, the table should sweep. So the operator has walked through a set of vertical MANUAL reset light curtains, and is loading parts, having them only be vertical means they are in an open zone between the light curtains and table. Having them be manual reset means the operator has to leave the cell to reset and start operation. As far as I can tell, I meet safety standards with this setup, assuming single operator, and the operator has clear sight of the loading area from the reset/start station. I see frequently (and we have done these as well) angled light curtains at the operator entrance area, which essentially covers the entire operator area and blocks the light curtains as long as an operator is in the loading area. Also having cascaded sets of a vertical and horizontal pair to accomplish the same thing. But are these 'necessary'? I'm trying to determine when the horizontal area should be covered. And if it really needs to be covered in a single operator cell with clear sight of the cell. Terrain tiny house belgique. If the robot and operator were to be sharing the same work surface, then I can see more of a need for the horizontals, but only if auto reset was being used. What are your thoughts? Is this more of a 'best practice'?
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