QuantumDrive-4000 Manual vii
91-0027 Rev. E
Copyright © Nutfield Technology, Inc.
6/2010
Laser Shutter Installation
The laser attenuator (shutter) is not included with the scanners. Because each laser is unique, it is the user's
responsibility to ensure that such a device is incorporated in the installation in conformance with CFR
regulations (1040.10[f][6]), which reads as follows:
A beam attenuator is required on Class II, IIIa, IIIb, and IV laser systems. The beam attenuator is a
mechanical or electrical device such as a shutter or attenuator that blocks emission. The beam attenuates or
blocks bodily access to laser radiation above Class I limits without the need to turn off the laser. The beam
attenuator must be available for use at all times during operation. Power switches and key controls do not
satisfy the attenuator requirement.
The beam shutter should be installed between the laser head and the Scan Head. The following figure shows the
recommended location of the shutter.
We strongly recommend that you specify a laser with a vendor-supplied shutter
mechanism. If this is not possible, consult the laser vendor to design a proper safety
shutter.
The figure shows
the laser's internal
and external optical
path towards the
target plane,
specifically where
the hazard zones are
located as the
optical beam passes
through a Scan
Head
.
Installation Safety Requirements
Because of the possible hazard increase of scanning, stopping, or slowing to an unsafe velocity, it is
required that the controller software shuts down the laser power (a scanning safeguard).
In all cases, we recommend that you fully enclose and interlock the zone of hazard for your application to
prevent possible opening while the laser is energized. When laser radiation exceeding Class 1 levels may
exit the enclosure, you must have suitable protection for eyes available.
At no time should you stare into the beam, place any parts of your body in the beam path,
or expose yourself to reflections of powerful beams. You should use only a Class 1 HeNe
Laser for alignment. If this is not possible, you should use the available laser's lowest
power setting and remote beam sensing techniques.
Using optical instruments with this product increases eye hazard.
Laser Scanner
Hazard Zones
of a Scan Head
SCAN HEAD
