Presence Sensing Devices – Reaching over sensing fields

I recently heard about an application question about a light curtain with a small gap at the top of the sensing field, between the last beam in the field and the surrounding structure of the machine. Some concern was raised about the gap and whether or not additional guarding might be needed to close the…

Read More

Interlocked gate testing

Did you know that interlocked gates require stopping performance testing?

Machinery needs to be able to stop in the time it takes a person to open the guard and reach the hazard. If the distance from the guard opening to the hazard is short enough that a person can reach the danger point before the hazard can be controlled, the guard is useless. The resulting situation may be worse

Read More