Nordson BC5100, Product Manual, Page: 22 / 46

BC5100 Bar Code Scanner
18
Part 1076483A
E 2007 Nordson Corporation
Trigger Setup
The LA 650 trigger is shipped with a default cut-off distance setting of
50 mm (1.96 in.). This gives optimal sensing performance at a sensing
distance of about 30 mm (1.18 in.). The cut-off distance is adjustable from
30 − 150 mm (1.18 − 6 in.). Objects lying beyond the cut-off distance are
ignored, even if they are highly reflective. However, it is recommended to
have a dark background or, even better, free space beyond the substrate,
especially when processing transparent plastics.
1
2
3
4
5
6
7
Figure 11 LA 650 trigger setup
1. Receiver elements
2. Lens
3. Object 4. Cut-off distance
5. Background
6. Sensing range
7. Emitted light beam
Adjust Cut-off Distance
1. Use a small screwdriver in the adjustment screw. See Figure 3 for the
cut-off point adjustment screw location.
2. Turn right to increase or left to decrease the cut-off distance.
3. Adjust the cut-off distance until the threshold is reached and the yellow
light indicator changes state.
NOTE:
For optimal sensing performance, the direction of travel of the
substrate should always follow the axis from the receiver elements towards
the light emitter, see Figure 12 for the recommended direction of travel.
Figure 12 Recommended
substrate travel