Chapter
2
Reference Manual
Ruler E
Laser Safety
2.2
Installation Considerations
Class II / 2M
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Laser warning and aperture labels in conformance with the labels below should be
present on the complete system.
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If possible the laser radiation from the laser should be terminated with a diffuse reflect-
ing material.
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Eye protection – during installation and alignment operations appropriate eye protec-
tion should be used. The eye protection should be designed to reduce the laser power
in the wavelength region 600-700 nm. If uncertain, contact SICK IVP for information
regarding acquisition of such eye protection.
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Visible and/or audible indication of operation of the laser (Ruler) should be present in
the installation. The indication should be activated before the Ruler is powered on.
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A beam attenuator, which reduce the laser emission down to class I limits should be
present in the system.
Lack of beam attenuator and emission indicator is accepted by CDRH according to "Guid-
ance on Laser Products - Conformance with IEC 60825-1, Am. 2 and IEC 60601-2-22
(Laser Notice No. 50)".
Class IIIb / 3B
In addition to the considerations for class III/2M lasers, the following also applies:
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A key-box with a removable key must be present in the system. Without the key it
should not be possible to power-on the laser unit of the Ruler.
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Remote interlock connector – a connector readily available for connecting a remote
emergency stop or remote barrier interlock.
The remote interlock connector having an electrical potential difference of no greater
than 130 root-mean-square volts between terminals. When the terminals of the con-
nector are not electrically joined, no human access to laser radiation from the laser
product in excess of the accessible emission limits of Class I is possible.
Figure 2.1 – Placement of the laser warning and certification labels
Class II / 2M
Class IIIb / 3B
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