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Mitsubishi Electric Melsec iQ-R Series User Manual Page 4

Laser displacement sensor control module for programmable controller.
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[Precautions for Using Laser Products]
WARNING
● The laser products use semiconductor laser light sources. When handling laser products, observe the
following because human access to laser radiation may result in injury.
(1) Do not disassemble the laser products. Doing so may result in exposure to laser radiation.
(2) Shut off the external power supply (all phases) to stop laser emission before replacing a failed
laser product or changing the layout.
● Observe the following handling precautions for the laser products in each class.
(1) Class 3R laser products
• Do not aim the laser beam at people.
• Do not directly look at or come in contact with the laser beam and its reflection from a specular
surface (such as a mirror). In addition, never look at the beam and its reflection through optical
instruments (such as a microscope and a telescope).
• Shorten the beam paths as much as possible to prevent diffusion of laser beams. Terminate the
laser beams at the end of their paths by diffusely reflecting materials of appropriate reflectivity
and thermal properties or by absorbers.
• Locate the beam path above or below the eye level. Wearing protective eyewear is
recommended when handling the laser products.
• Install the laser products carefully so that the laser beam is not unintentionally reflected from
specular surfaces.
(2) Class 2 laser products
• Do not aim the laser beam at people.
• Do not stare into the laser beam and its reflection from specular surfaces.
• To prevent exposure to laser radiation (specularly or diffusely reflected laser beams), install a
protective enclosure with an appropriate reflectance.
• Locate the beam path above or below the eye level.
(3) Class 1 laser products
• Do not stare into the laser beam and its reflection from specular surfaces.

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