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Release 7/2009 Ver. 1.0
Figure 1
Detection Capability: This is the minimum dimension
of an opaque object which will be reliably detected
anywhere within the detection zone.
NOTE: The spacing or pitch of the beams or lenses in a
light curtain is not the same as the detection capability.
The detection capability is always greater than the
spacing or pitch. Spacing or pitch should not be used in
the calculation of separation distances (see Figure 2).
1.2.2
DETECTION CAPABILITY
GS-120 light curtains are available with detection
capabilities of 30mm or 70mm.
Figure 2
TAPESWITCH CORPORATION
100 Schmitt Boulevard
Farmingdale, New York 11735
Technical Manual: GS-120 Light Curtain Systems
1.2.3
PROTECTED HEIGHTS
GS-120 light curtains are available with nominal
protected heights as follows:
Detection Capability
30mm (1-3/16 in.)
70mm (2-3/4 in.)
The minimum separation distance is 0.5 m.
Note:
The actual protected height is 8 mm greater than the
nominal protected height.
1.2.4
ACCESSORIES
1.2.4.1 Mirror Units
A range of mirror units are available to enable a single
curtain to be used to guard two or three sides of a
machine or to avoid structural obstructions.
The mirror assembly consists of a high quality silver-
backed glass mirror adhesively attached to a length of
extruded aluminum. Two pivot brackets are bolted to
the aluminum extrusion and can be adjusted anywhere
along the length for mechanical attachment. The actual
length of the mirror is 4 inches (1000mm) larger than the
active curtain length to accommodate a wide tolerance
for height alignment. All of the necessary hardware is
supplied to facilitate mounting to the mounting/floor
stands. The dimensions of the pivot brackets, extruded
aluminum and overall mirrors are shown below in
millimeters.
5
Nominal protected heights
(in mm and inches)
200-300-400-600-800-900-
1000-1200-1400-1600 mm
(8-12-16-24-32-36-40-48-56-
64-72 inches)
600-800-1000-1200-1400-
1600-1800 mm
(24-32-40-48-56-64-72
inches)
Phone: 631-630-0442
Fax: 631-630-0454
www.tapeswitch.com
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