What is a light curtain in manufacturing?

In even simpler terms, the light curtain uses presence detection between a transmitter and receiver. The transmitter sends infrared light to the receiver’s photoelectric cells and when these cells stop receiving their input they trigger that something is indeed in the way.

What is a light curtain used for?

Light curtains are opto-electronic devices that are used to safeguard personnel in the vicinity of moving machinery with the potential to cause harm such as presses, winders and palletisers. Light curtains can be used as an alternative to mechanical barriers and other forms of traditional machine guarding.

How does a light curtain sensor work?

A photoelectric transmitter projects an array of synchronized, parallel infrared light beams to a receiver unit. When an opaque object interrupts one or more beams in the sensing field, the control logic of the light curtain sends a stop signal to the guarded machine.

Can arrays measure?

To determine the size of your array in bytes, you can use the sizeof operator: int a[17]; size_t n = sizeof(a); On my computer, ints are 4 bytes long, so n is 68. To determine the number of elements in the array, we can divide the total size of the array by the size of the array element.

What is a Type 4 light curtain?

Type 4 light curtains offer the highest protection possible and according to EN ISO 13849-1 can be used on machines where CAT4/PL e is required. Type 4 light curtains can be used in applications that require finger, hand and body detection.

What is light curtain resolution?

The resolution of the light curtain is the distance between two adjacent beams, or the smallest object profile dimension that will be reliably detected passing through the array. Common resolutions include 14 mm for finger detection, 30 mm for hand detection, and 50 mm for whole body detection.

Are light curtains lasers?

Typically, safety laser scanners are used in Area Protection while safety light curtains are used in Perimeter Guarding applications. If required, one can even mount light curtains very close to the machine to save valuable floor space.

How do you choose safety light curtains?

Five things to consider when selecting a safety light curtain

1. What certifications does it have?
2. What detection capability does it have?
3. What’s the minimum safety distance?
4. How rugged is it?
5. What’s the control architecture?

What is Category 3 Safety?

At a very high level, Category 3 refers to a design principle used by the engineering teams. It means that the machines are designed to not only check for faults but also have redundant circuits for all safety functions.

How do you measure the width of window curtains?

If you want your draperies to cover the entire window, you will need enough panel width to hang across the full opening. Measure the width of your window. Add 12 inches to each side, 24 inches total. Take the total number (width plus the number you added to each side), and divide that number by how many drapery panels you want in the window.

How big is an EZ array light curtain?

Banner’s EZ-ARRAY measuring light curtains detect items as small as 5 mm wide with an edge resolution of 2.5 mm, and have high excess gain for detecting opaque objects. These features allow for reliable detection and measurement of packages that pass through the light curtains.

How to measure for curtains by JCPenney style?

Also, the hung curtains will completely cover the window frame. The third perk is that this can make the window appear larger than it actually is. Measuring curtains for this style is easy. Measure your window, then add 9 inches to the length and 6 inches to the width. This modern look hangs your curtains so that they end just above the floor.

What kind of light curtain system do I Need?

The SS 02 series is an advanced, industrial measuring light curtain system which consists of a self-contained transmitter SST and receiver SSR, which can either be positioned opposite or next to each other for thru beam or diffuse proximity mode.