Safety light curtain device for starting emergency stop circuit of machine, has source for emitting light beam, sensor to receive light beam, and blocking unit arranged to block light beam, where blocking unit is controlled by control unit

摘要

The device (1) has a source for emitting a light beam, and a sensor for receiving the light beam. A blocking unit is arranged to block the light beam, where the blocking unit is controlled by a control unit. The blocking unit includes a mobile body (40) movable between an open position, in which the beam passes freely, and a closed position in which the mobile body blocks the light beam. The mobile body is pivotably assembled on a fixed body (41), and the control unit includes an electromagnet (6).