Safety Light Curtain Sensor
- Precise personnel protection against machine hazards.
- 10 years of manufacturing experience ensures superior product quality.
- Easy installation and maintenance minimize downtime and maximize efficiency.
- Available in Type 2 and Type 4 safety ratings to meet your diverse needs.
Our products
Safety light curtain sensors, also known as safety light grids, infrared light curtains, safety light barriers and so on, are used to protect people from dangerous machines. Lorentzzi® offers a variety of safety light curtain sensors with optical axis spacing of 10 mm (for finger protection), 20 mm (for palm protection), and 40 mm (for arm protection), and protection heights ranging from 60 mm to a maximum of 2000 mm. Our safety light curtains are highly competitively priced and of superior quality.
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CE Safety Type (Category) 4 certified, Available with dual PNP...
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200 mm protection height, Transistor PNP, NPN or relay output...
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Protection height 360 mm, Less than 20 ms fast response...
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Protection height 520 mm, can be customized, PNP, NPN, relay...
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Ultra-small, protection height 120 mm, Designed for small machine protection,...
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Protection height 680mm, beam distance can be 10mm, 20mm or...
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Protection height is 920 mm or customizable, Protection distance up...
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1000 mm protection height, Output is available in thyristor or...
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Protection height 1160 mm, PNP, NPN, and relay outputs optional, ...
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Protection height 1240mm, beam distance can be 10mm, 20mm or...
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Safety light curtain sensor applications
Safety light curtain plays a very important role in safe production due to its excellent performance. It can protect workers from the harm of dangerous machines. Safety light curtain can be applied in the following fields.
Automated production line
In automated production lines, safety light curtains are used to protect operators from injuries caused by robotic arms, conveyors, and other automated equipment. For example, if an operator inadvertently approaches a running robotic arm, the safety light curtain sensor will detect this and can trigger an alarm or immediately stop the machine to prevent potential accidents. The use of safety light curtains can significantly improve the safety of production lines.
Stamping machinery
Commonly used stamping presses range in pressure from 10 tons to 1000 tons. If operators lack sufficient safety precautions, they will face serious safety hazards. Therefore, it is strongly recommended to install a safety light curtain. The safety light curtain must be installed at the machine’s feed inlet; the machine can only be started when the light emitted from the curtain is unobstructed and the foot pedal is depressed.
Bending machines
During operation, the closing of the upper and lower dies of the bending machine can easily cause fingers and palms to be squeezed or pinched, which is the most common cause of serious injury. Installing a safety light curtain can effectively prevent such accidents. We can install the safety light curtain at the feed inlet of the bending machine, and it will only operate normally when the light beam is unblocked. If the light is blocked, the equipment will sound an alarm or stop.
Injection molding machines
Safety light curtain sensors are also used in injection molding machines, primarily installed in the mold clamping mechanism. For professionals, the output force of the clamping mechanism is crucial for maintaining the shape of the molded part, and its unit is typically tons. Installing a safety light curtain sensor here prevents personnel from being accidentally crushed during clamping.
Automatic wrapping machine
Simply installing physical barriers around fully automated wrapping machines is not enough; these machines can also utilize safety light curtain sensors to ensure personnel safety. Because safety light curtain sensors use invisible infrared light to detect objects, they can not only provide a wider field of view compared to physical barriers, but also can ensure personnel safety.
Laser cutting machine
When operating a laser cutting machine, the machine gantry, guide rails, and cutting head move at high speeds, which can easily cause fingers or limbs to be pinched or injured. In this case, we can use a safety light curtain to provide protection in this area. When a person’s fingers or limbs accidentally enter the protected area, the safety light curtain can detect it and stop the machine to avoid injury.
What is your application?
Why choose Lorentzzi as your supplier?
Better product quality
Lorentzzi® brand safety light curtains are manufactured with high-quality components and undergo rigorous aging tests before leaving the factory, providing superior protection for your workers from hazardous machinery. Ensuring the safe use of your personnel and equipment is our top priority.
Customization supported
If you are looking for a highly customized safety light curtain supplier in China, Lorentzzi® is your best choice. Our professional engineering team is ready to serve you, and we can meet your needs, whether you require customized safety light curtain length, optical axis spacing, housing, or internal PCB.
Ready to ship
Our factory has a large warehouse and maintains a reasonable inventory level for each type of safety light curtain. Our goal is to meet the requirements of urgent customer orders, so that your machines do not have to be downtimed for replacement parts.
Frequently asked questions
What is a safety light curtain sensor?
A safety light curtain sensor (also known as a safety light barrier, safety light grid, or simply safety light curtain) is a protective device used to detect objects or personnel entering hazardous areas of machinery or equipment. It consists of a transmitter and receiver with side-by-side optical axes forming an invisible infrared beam plane. When an object enters this plane, the light beam is blocked, triggering a corresponding output that can be used to stop machine operation or issue an alarm, thus helping to prevent accidents and ensure operator safety.
In short, you can think of a safety light curtain as consisting of multiple through-beam photoelectric sensors connected in series. If the light from one sensor is blocked, all sensors will fail. This triggers the output of the entire safety light curtain, which can be used to control equipment shutdown or issue an alarm.
How many types of safety light curtain sensors?
Safety light curtain sensors are categorized into two types based on their protection levels: Type 2 and Type 4. For more details on these classifications, refer to our article: Safety Light Curtain Types: Type 2 and Type 4 Differences.
In addition, Lorentzzi® brand safety light curtain sensors can be further categorized according to the body part they protect:
- Finger Protection Type: 10mm beam spacing, primarily for protecting fingers.
- Palm Protection Type: 20mm beam spacing, primarily for protecting the palm.
- Body Protection Type: 40 mm beam spacing, used to protect body parts or other larger objects.
Global safety light curtain supplier
There are many safety light curtain suppliers, including our own brand Lorentzzi (Chinese safety light curtain supplier, our products have accurate detection and high protection level, and our products are more price competitive), Omron, Banner, Keyence, IFM, Pepperl+Fuchs, Rockwell, Pilz, Turk, Autonics, etc.
More information about the safety light curtain manufacturers, please read our article: Safety Light Curtain Manufacturers: 10 Best Vendors In China.
How to choose a safety light curtain sensor?
Knowing how to choose a suitable safety light curtain is a very vital lesson before purchasing and using it. You can refer to this instruction article: Safety Light Curtain: 5 Things You Must Know In 2023.
Is the output of the safety light curtain sensor necessarily a normally closed output?
That’s right. Normally closed contacts are safer than normally open circuits, so it’s best to choose a safety light curtain with dual-output OSSDs. This is because even if one OSSD fails, the other can continue to operate, ensuring user safety.
To learn more about why you should choose a dual-output safety light curtain over a single-output one, you can read this blog post: “Single-output Vs Dual-output Safety Light Curtains: Which Is Better?“
How to wire a safety light curtain?
Different manufacturers produced safety light curtains wiring methods might be different, but the wiring method is nearly the same, you can see the below our safety light curtain wiring diagram, if you still have difficulty to wire it correctly, please contact us to get instant support.
Advantages of Lorentzzi brand safety light curtain
Lorentzzi® safety light curtains are of high quality, affordable, with high detection accuracy, fast response time and an extra-long two-year warranty. In addition, we can ship them to any corner of the world via UPS, FedEx or DHL.
Lorentzzi global partners
