Break the Beam, Stop the Machine

Safety Light Curtain systems emit pulsed infra-red beams between a sender and a receiver unit to create an invisible safety screen. Interruption to any beam is immediately detected and the Light Curtain safety circuits will effect a “STOP” to the machine cycle.


A sensor is a converter that measures a physical quantity and converts it into a signal which can be read by an observer or by an (today mostly electronic) instrument. There are two types of sensors

  • Photosensors
  • Inductive