Patent ID: 7080534

Claim:
In a machine having a first machine part and a second machine part, with the first machine part and the second machine part performing a working movement towards each other, and with the first machine part having a leading edge in the direction of the working movement, the leading edge defining a plane of movement, a safety apparatus comprising: a plurality of first light barriers arranged for moving together with one of the machine parts during the working movement, a control unit, and a configuration device, wherein the first light barriers are configured to generate a plurality of first light beams extending parallel to the plane of movement, wherein the plurality of first light barriers are arranged such that the first light beams run in advance of the leading edge, and wherein the plurality of first light beams run with a plurality of different distances from the leading edge as viewed in the direction of the working movement, wherein the control unit is configured to stop the working movement of the first machine part in response to the first light barriers, and wherein the configuration device is configured to deactivate selected ones from the first light barriers for at least the duration of the working movement.