Light Curtain Distance Calculator

Machine guard safety distances calculator.

Light curtain distance calculator.

These distances are defined in standards such as iso 13855. The minimum safety distance is defined as the minimum distance from the light curtain s plane of light to the closest hazard or danger point where the operator could reach into the hazard. Ansi standard b11 19 2010 formula for calculating safety distance of light curtains from hazardous point of operation. Light curtain to machine trap safety distance the reference standard is the en 999 safety of machinery the positioning of protective equipment in respect of approach speeds of parts of the human body.

Ds is safe distance unit m 1 6 is the stretching speed of human hand unit m s. Masuzi march 11 2016. Light curtain safety distance calculator. Light curtains control access to the hazardous equipment by emitting infrared light beams typically across the entrance to the hazardous area.

Calculating the safety distance according to iso 13855. T1 is the response time of safety light curtain 0 02 s. When any of the beams is blocked the light curtain control circuit sends a stop signal to the guarded machine. This minimum safety distance is based on the stopping ability of the machine and a hand speed constant.

The effective sensing field of the device shall be located at a distance from the nearest recognized hazards such that the operator or others cannot reach the hazard with a hand or other body part before cessation of motion during the hazardous portion of the machine cycle. Light curtains are very versatile and can guard an area many meters wide. Meanwhile a light curtain with 30 mm resolution hand detection has a d pf of 78 2 mm about 3 inches. When installing a light curtain be sure to provide the safety distance minimum distance determined by sources such as the standards regulations and laws of the country or area in which the light curtain will be used.

Ds 1 6 t1 tz in the formula. Distance for light curtains sick inc light curtain installation and safety distance minimum how to calculate safety distance of light curtain ato com. A safety professional can help you determine the stopping time t s of your machine. Ansi minimum safety distance d s calculation.