L
Hey Folks,
We have a light curtain that an operator reaches through to load parts into an assembly fixture. There is a ross safety valve supplying air to the cylinders on the fixture. We want to avoid dumping the safety air valve every time the curtain gets broken. We need to override the curtain by a safe means.
If there was one cylinder, we could simply monitor the cylinder home position with a non-contact safety senor. That sensor would allow air to remain while the curtain is broken. If the curtain is broken and there is a fault that caused the cylinder to move, then the non-contact switch would be opened and the air would immediately dump. Now comes my point where we have many harmful cylinders behind the curtain. In order for air to remain while loading parts, would we really need to safe sense the home position of all those cylinders? Or is there another way?
We have a light curtain that an operator reaches through to load parts into an assembly fixture. There is a ross safety valve supplying air to the cylinders on the fixture. We want to avoid dumping the safety air valve every time the curtain gets broken. We need to override the curtain by a safe means.
If there was one cylinder, we could simply monitor the cylinder home position with a non-contact safety senor. That sensor would allow air to remain while the curtain is broken. If the curtain is broken and there is a fault that caused the cylinder to move, then the non-contact switch would be opened and the air would immediately dump. Now comes my point where we have many harmful cylinders behind the curtain. In order for air to remain while loading parts, would we really need to safe sense the home position of all those cylinders? Or is there another way?