In modern industrial production, the most dangerous and the most protective measures are to be taken, that is to install a protective door at the part of the workpiece to be used as a passage between the operator and the workpiece to be processed, but how to make a protective door to play a role in safety protection has become a Security doors are especially important. When protecting the human body from machine hazards, we cover the hazardous areas with protective barriers and add a door where maintenance is required. This is the safety light curtain.

However, the machined parts on the machine need to go in and out, so there needs to be an opening. Safety light curtains are devices that are placed in these openings to be protected by light beams.

This is a sensor device with rows of photoelectric switches mounted from top to bottom, and it monitors a range of amplitudes. When the human body enters the machine during operation, the lights will be turned off and the machine will be stopped to protect personal safety. Therefore, its performance and safety are specified in the IEC standard to protect humans. When used for purposes, other than light curtains that comply with this safety standard cannot be used arbitrarily.

There are also regulations when installing light curtains on machines. The machine to be set must have a stop function. There are also openings where workpieces or debris can fly out of the inside of the machine, making it unusable. In addition, protective doors must be added to protect flying objects. The installation location should consider factors such as the detection function of the sensor, the stop time of the machine, and the speed of human intrusion, so that the distance between the hazard and the installation location can be calculated using a calculation formula.