Safety light curtains (also known as light guards or light screens) are optical sensing devices.They offer flexibility, quick and frequent access to machinery, and better visibility.Also, they’re easier and more cost-efficient to maintain than mechanical barriers.If you’re shopping for a quality safety system, we’re here to answer some of your burning questions.


How do safety light curtains work?
Light curtains come in pairs.They consist of a transmitter and receiver that communicate via invisible light beams.These light beams create a protective field.If breached, they’ll send a stop signal to the machine safety controls.The light beams also pulse at a specific frequency.This way they don’t interfere with other light sources and vice versa.

Safety Light Curtains
What is the difference between Type 2 and Type 4 safety light curtains?
Type 2 light curtains are generally a more economical choice.They don’t have as many features as type 4 light curtains.Opt for Type 2 safety light curtains for hand and body protection where there is a low risk factor.Type 2 safety light curtains are also a great option for supplemental safeguarding.Installing a supplemental safeguard will prevent the reset of a primary safeguard.

What are the advantages of safety light curtains over mechanical barriers?
Light curtains use light beams to detect when a person or object crosses into a dangerous area.Easy access to machines can increase efficiency if machine operators need frequent access.Safety light curtains also increase visibility of the machinery.In addition, Minimal wear and tear makes them more cost-efficient than mechanical barriers.



Safety light curtain resolution
How do I calculate the appropriate separation distance for a safety light curtain?
The appropriate separation distance is unique to every circumstance.Factors to consider include: light curtain resolution, response time, machinery, and operator speed.The separation distance should allow enough time for the machine to stop before the operator comes in contact with the hazard.Below is a formula according to ANSI standards for calculating safety distance.