What is a Safety Laser Scanner?

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A safety laser scanner is one of the newest technologies to be used for machine area safeguarding. This small optical sensor uses pulsed laser light to scan its surroundings. The scanner then compares the scanned information to its predefined zones. If the scanner detects an intrusion into that area, it sends a stop signal to the guarded machine.

How Do They Work? What Are They Used For?

Safety industrial laser scanners function by using a “time of flight” measurement to determine distance. The scanner emits a light pulse, the light then hits the first object in its path and is reflected back to the scanner. Then the scanner compares the distance against the known size of its safety zone. If the scanner senses an intrusion into the safety zone, it sends a stop signal to the guarded machinery. This sequence is repeated as the optical assembly rotates, scanning the guarded area over and over. Applications for stationary include: Safety laser industrial scanners are used for safeguarding dangerous areas and access points. Because they are so versatile, they can be used as a safeguard on both stationary and moving equipment. • Guarding a robotic cell • Guarding in front of a press or other hazardous machinery Applications for mobile use include: • Guarding the front and rear of an automated guided vehicle or transfer industrial cart while it is in motion
Pulses are sent out in a 180° pattern. Distance to the object is determined by the “time of flight” of the light pulse.

What Do They Do?

Through user-defined settings, they monitor a predetermined area for intrusions, making them a very effective safeguarding device.

Why Use a Laser Scanner Instead of Something Else?

One of the main benefits of the laser scanner is its versatility and non-intrusive presence. Unlike hard guards such as fences or safety floor mats, the laser scan- ner works without physical barriers. Due to its sensing technology, it is perfect for equipment that requires regular mainte- nance and cleaning. Fewer hard-guards are needed, allowing industrial sweepers, forklifts, and loaders to transit through its protec- tion area.

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OMRON SCIENTIFIC TECHNOLOGIES, INC. USA For Complete Specifications and Additional Models
Tel. 1/888/510-4357 Canada
Tel. 1/866/986-6766 On the Internet: www.sti.com or www.omron.ca B-5