Safety Light Curtain Product Selection Guide

Assess the degree of danger caused by the equipment to people, and select the appropriate safety level according to the degree of danger. The safety level of safety light curtains is usually divided into type 2 and type 4. Type 4 safety light curtains have a higher safety protection level than type 2 and are suitable for high-risk occasions, such as punching machines and welding equipment. Type 2 safety light curtains are suitable for low-risk occasions, such as assembly lines. Select the appropriate safety light curtain according to the required risk protection level.

Determine whether the object to be protected is a finger, palm, arm or the entire human body, which will affect the selection of optical axis spacing.

Consider factors such as vibration, dust, light interference, temperature, humidity and other factors in the working environment, and select the type of safety light curtain that can adapt to these environmental requirements. The use environment is also an important factor to consider when selecting a safety light curtain. If the light curtain needs to work in harsh environments such as high temperature, humidity, and dust, it is necessary to select a light curtain with a good protection level (such as IP65, IP67). In addition, it is also necessary to consider whether the light curtain has anti-interference ability to cope with the influence of external light and electromagnetic interference.

The optical axis spacing refers to the distance between two adjacent light spots in the safety light curtain. Smaller optical axis spacing can provide higher protection accuracy, but may increase costs. Resolution refers to the fineness of the light curtain detection, usually expressed as the distance between the light beams. Higher resolution can detect smaller objects or details, suitable for occasions that require precise detection. For example, a light curtain with a resolution of 14mm can detect fingers, while a light curtain with a resolution of 30mm is more suitable for detecting arms. When choosing a light curtain, you need to choose the appropriate resolution according to the part that needs to be protected.

The protection height should exceed the operating height by a certain distance to ensure the safety of the operator. The protection length should be determined according to the actual situation of the machine and equipment to cover the entire danger zone.

The beam distance refers to the straight-line distance between the safety light curtain transmitter and the receiver. The conventional safety light curtain beam distance is 0 to 3 meters, but some models can reach a longer distance.

The detection range of a safety light curtain determines the size of the area it can cover. It is necessary to select a light curtain with a sufficiently long detection distance based on the size of the equipment in the actual use scenario or the coverage of the hazardous area. Generally speaking, the detection distance of a light curtain can range from tens of centimeters to tens of meters.

The reaction time of the safety light curtain determines how quickly it can react. When selecting, make sure that the reaction speed of the light curtain matches the operating speed of the equipment, especially on high-speed mechanical equipment, where a faster reaction time can reduce safety hazards.

There are many signal output methods for safety light curtains, such as relay output, NPN output, PNP output, etc. When selecting, make sure that it matches the control system and interface requirements of the machine equipment.

Choose a suitable installation method according to the actual situation on site, such as L-shaped groove side installation, pipe bracket side installation, etc.

After determining the shooting distance, you also need to consider the length of the cable to ensure that the safety light curtain can work properly.

Regularly check the fixing of the safety light curtain, the status of the transmitter and receiver, and the connection of the cable.

Perform maintenance and maintenance according to the manufacturer's recommendations to ensure the long-term stable operation of the safety light curtain