Safety Light Curtain Resolution and Protection Height Selection Guide
Time: 2026/3/30 Views: 36

Today, Wuxi Rihuan Sensing Technology Co., Ltd. will introduce to you the selection guidelines for the resolution and protection height of safety light curtains


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Safety curtains, as an important safety protection device in industrial production, the reasonable selection of their resolution and protection height directly affects the safety of equipment operation and production efficiency. If the parameters are not matched with the production scenario, it may result in frequent machine stops affecting production, or even lead to failure of protection and cause safety accidents. Below, we will detail the scientific selection methods for the resolution and protection height of safety curtains, helping enterprises precisely match production needs.

Resolution selection: Precisely divide according to the protected area 

Resolution refers to the distance between two adjacent infrared beams of the safety curtain, which is the core indicator determining the protection accuracy. It needs to be selected based on the body parts that may come into contact with dangerous areas during operation. It is mainly divided into three levels. Finger-level resolution (less than 20mm), suitable for precision processing scenarios such as small stamping machines and robotic arm operations, can effectively protect small body parts like fingers; Palm-level resolution (20-40mm), suitable for common industrial equipment like ordinary machines and injection molding machines, can protect areas such as the palm and arm; Body-level resolution (more than 40mm), suitable for large production equipment and storage and logistics lines, mainly protects the human torso.

Selection of protection height: Match the dangerous area + Reserve installation margin 

The protection height is the vertical height at which the safety light curtain can provide protection. The core requirement for selection is to match exactly with the vertical height of the equipment's hazardous area, eliminating any protection blind spots. During actual selection, it is necessary to first accurately measure the maximum vertical dimension of the equipment's hazardous area, and then add an additional 5-10 cm of installation margin on this basis to avoid protection loopholes caused by installation deviations and ensure that the protection range is fully covered.

Comprehensively consider factors of the equipment and the installation scenario. 

When making a selection, one should not only focus solely on resolution and protection height. It is necessary to make a comprehensive judgment by considering the operating speed of the equipment and the available installation space. If the equipment operates at a high speed, a safety light curtain with a higher resolution and suitable protection height should be chosen first. This should balance both the protection accuracy and the response speed of the equipment, avoiding safety issues caused by the light curtain's insufficient response time. At the same time, the size of the installation space should be taken into account to ensure that the protection height and installation position of the safety light curtain are coordinated, covering all dangerous areas while not interfering with the normal operations of the operators, achieving a dual balance between safety protection and production efficiency.

Rihuan Sensing has been deeply involved in the field of industrial safety sensing and has developed safety light curtain products covering a full range of resolutions and multiple specifications of protection heights. They can precisely adapt to different personalized needs of industrial production scenarios. From parameter design to product quality, they provide comprehensive security guarantees for equipment operation. They build a safety protection line for various production scenarios in all industries, making them a high-quality choice for industrial safety protection.