Nexen AWL 280 912662 - Manual (Page 5)

5 FORM NO. L-20219-B-1212
B
A A
CL
Machine
11.02
(280MM)
Sensing Length
11.02
(280MM)
Sensing Length
LEFT SENSOR RIGHTSENSOR
WEB
FIGURE 2 Sensor Viewing Area
SENSOR INSTALLATION
FIGURE 1 Mounting the AWL 280 Sensors
Cable 100mm
(with connectors)
Effective sensing length
11.02 [280]
0.78
[20]
1.77
[45]
0.59 [15]
0.59
[15]
1.18 [30]
4 - 09
3.74 [95]
7.87 [200]
2.36
[60]
14.96
[380]
1.18
[30]
1.18
[30]
3.35 [85]
1.9
7
[50]
2.56 [65]
Projector
Projector
Detector
Detector
Invert order and align on gap
Vertical Web Pass Line
.985
[25mm]
NOTE: Refer to Figures 1 and 2.
1. Install the two AWL280 Sensors in inverted order to each other; one sensor with the projector side up and one sensor with the
detector side up. Because the detector housing is larger (3.35 inches / 85 mm) than the projector housing (2.56 inches/ 65 mm),
the sensor with the detector side up will sit higher than the sensor with the projector side up.
2. The web must be centered on both the vertical and horizontal plane. Center the web on the vertical plane at the vertical web pass
line between the projector and detector (.985 inch [25 mm]). Center the web on the horizontal plane between the left and right
sensor.
3. The projector and detector housings may be removed from the steel bar and mounted separately if your application requires a gap
that is wider than 1.978 [50] or if the sides must be open. The housings must be aligned both vertically and horizontally when
mounted separately. The gap from the projector lens to the detector lens must not exceed 10 inches [250 mm].
4. The sensing length in the sensor window measures 11.02 inches [280 mm]. This sensing length is indicated by arrows that are
located on either side of the sensor window. However, for the most effective use of this sensing area, the web should not extend
to the full outer edge of the sensing length. The optimum width of the web is 1/2 of the total sensing area of 22.04 inches plus
"B" ( which is 11.02 inches [280 mm] plus "B"). The web width should not exceed 22.04 inches plus "B" nor should the web
width fall below the width of "B". Mount the sensors so that the maximum and minimum web widths fall within this range. In
addition, mount each sensor an equal distance (A) from the center line of the machine.