Wintriss Shadow 8, User Manual

Page: 47 / 159

1139300 Shadow 8 User Manual
2-22 Installation and Checkout
Maximum Openings for Side Guards
When mechanical side guards are used in addition to the Shadow 8 light curtains for three
sided-guarding, you must ensure that the openings between or around the guards meet OSHA
requirements. You must also ensure that the openings in the guard material itself (wire,
extruded mesh, rods, etc.) or between the guards and working surface meet OSHA
requirements. Table 2-3 shows the maximum dimensions of openings allowed by OSHA as
provided in OSHA Table 0-10.
Using Mirrors with Shadow 8
Mirrors may be purchased from Wintriss as optional items to use with Shadow 8 for two- or
three-sided guarding. Wintriss provides front-reflective mirrors that provide optimal light
transmission or reflection. Wintriss does not recommend the use of other mirrors or other
reflective surfaces as they may severely reduce vibration tolerance or scanning distance.
A typical setup of Shadow 8 heads and mirrors in a three-sided guarding application is shown
in Figure 2-10, page 2-23. The Shadow 8 heads are aimed at the mirrors, and the light beam
from the transmitter is reflected by way of the mirrors to the receiver.
Table 2-3. OSHA Table 0-10
Distance of Opening
from Pinch Point (In.)
Maximum Dimension
of Opening (In.)
1/2 to 1 1/2 1/4
1 1/2 to 2 1/2 3/8
2 1/2 to 3 1/2 1/2
3 1/2 to 5 1/2 5/8
5 1/2 to 6 1/2 3/4
6 1/2 to 7 1/2 7/8
7 1/2 to 12 1/2 1 1/4
12 1/2 to 15 1/2 1 1/2
15 1/2 to 17 1/2 1 7/8
17 1/2 to 31 1/2 2 1/8
MIRRORS DECREASE SCANNING DISTANCE AND ANGLE OF DIVERGENCE
• Allow for a reduction in scanning range of 10% for each mirror you use. Since Shadow 8 has a
default scanning range of up to 65’ minimum (or up to 26’ minimum if option switch SWB 6 is set
to ON–see page 2-48), you reduce the scanning range of the unit 6.5’ (or 2.6’) for each mirror
you install.
• Allow for a reduction in angle of divergence if you use mirrors. Mirrors greatly reduce the light
curtain’s vibration tolerance and make alignment more critical.
NOTICE