Calibration and Adjustment
5-11
5.11 Adjusting the Board Sensors
Board Sensors are optical sensors located along the length of the front conveyor rail. The sensors detect
the presence of the workpiece and report it to the Conveyor Controller. Board sensor sensitivity should be
adjusted after initial installation and if the sensors fail to sense the presence of a workpiece. Depending on
whether the system has a single-lane or dual-lane conveyers, there may be as many as six downward-
facing board sensors (pre-dispense, dispense, and post-dispense station for each conveyor). Sensitivity
adjustments for downward-facing board sensors are made on Fiber Optic Amplifiers mounted under the
dispensing area front cover.
To adjust downward-facing sensor sensitivity:
1.
Unlock the fiber lock (UP position). Insert ferrule ends until the fibers cords are fully seated.
Lock the fiber lock down into position (Figure 5-13).
"
NOTE
Fiber ends are not designated as send or receive. Each ferrule can be used in
either amplifier position.
2.
Verify that the digital value of the amplifier is less than 100 with the fiber array pointed away
from any objects (within 6-inches). This insures array “cross-talk” will not significantly
degrade the signal.
Figure 5-13 Board Sensor - Side View
3.
Move the
SET-ADJ-RUN
switch to the
SET
position (Figure 5-14). Press and hold the
MODE
button for 2 sec or until the Sensing Function menu is displayed.
!
The “Standard” sensing function (
F St
) is default.
Item Description Item Description
1 TEACH
Button
3 SET-ADJ-RUN
Switch
2 MODE
Button
4 MODE
Switch
Figure 5-14 Board Sensor - Top View
2
4
3
1
Содержание Asymtek Spectrum S-920
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