C4000 Advanced Ex Series, Machine Safety - Light Curtains

Light curtain beam arrays are crucial safety components that create an imperceptible protective barrier around industrial work areas, employing state-of-the-art infrared sensing technology. These beam arrays operate by projecting multiple beams of light across the protected zone, and when any of these beams are interrupted by an object or individual, the output signal, either NPN or PNP, is triggered to indicate the status of the light curtain system. To form a complete light curtain system, a transmitter and receiver pair with advanced functionalities such as blanking and muting are essential. The transmitter emits the light beams, while the receiver detects any interruptions in the beam pattern. Blanking and muting functions allow for the temporary deactivation or suppression of specific beams to accommodate the passage of materials or objects without triggering the safety alarm, thus enhancing operational flexibility without compromising safety. The design of light curtain systems involves meticulous consideration of various parameters to tailor the system to specific safety requirements. These parameters include the selection of the desired protective height, the number and arrangement of beams, the spacing between beams (beam pitch), the effective operating range, and the detection capability. Each of these factors is carefully assessed and configured to ensure comprehensive coverage and precise detection of potential hazards within the protected zone. The protective height determines the vertical coverage of the light curtain, safeguarding against access by hands, arms, or other body parts into hazardous areas. The number of beams and their pitch are chosen to create a dense and intricate pattern, minimizing the possibility of intrusion without compromising productivity. Additionally, the operating range is set to encompass the intended work area, while the detection capability is fine-tuned to discern even the smallest objects or movements within the protected zone. In summary, light curtain beam arrays, with their advanced infrared sensing technology, form invisible yet highly effective safety barriers around industrial work areas. When combined with transmitter-receiver pairs featuring functionalities such as blanking and muting, these systems offer a versatile approach to safeguarding workers and equipment. Moreover, their meticulous design considerations ensure tailored and precise protection, making them indispensable elements for ensuring workplace safety in industrial settings.