LaserGuard2 Instruction Manual
April 2015
Page 21 of 31
3.6. Mechanical
Alignment
Loosen the bolt on the bottom of the mounting rod and the screw on the clamp so the laser head can be
angled up and down, and from left to right with just enough friction so the laser head does not fall over on
its own.
Point the laser head in the direction of the target. While watching the target, slowly turn or angle the
mount as needed until the laser dot is seen in the middle of the target.
While keeping the laser unit from moving, carefully tighten the bolt and screw.
3.7.
Range Detector Settings
The range detector settings are defaulted at approximately 91 ft., 83 ft., and 75 ft. for Warning, Slowdown,
and Stop. It may be necessary to bypass the default range detector settings during set-up; this can be
done by holding down WARNING and SLOWDOWN at the same time for two seconds. At that time, the
Warning, Slowdown, and Stop points will be between 8 in. and 3 ft.
Setting the range detection points will require movement of the crane to the desired distances.
1.
Move the crane to the point at which the warning is needed and press the white WARNING
button.
2.
Move the crane to the slowdown point and press the gray SLOWDOWN button. This distance
must be less than that in the previous step.
3.
Move the crane to the last point where the brakes are to be applied and press the black STOP
button. This distance must be less than that in Step 2.
4.
Move the crane away from the target and then back again to verify all range points are triggered
at the correct distances.
Remember to consider the deceleration time within the VFD and the hysteresis within the LSU when
setting up detection points. For example, if the STOP button is pressed at 10 ft., that contact will turn on
at approximately 11 ft. and turn off at approximately 9 ft.
3.8. Fault
Check
The Temporary Loss of Signal Fault may be tested by bringing the laser to a distance from the target
operating range and then momentarily blocking the laser’s view of the target. This should cause a 10
second fault, which will light DS5 on the LSU control board. All of the relays will drop out (the total
dropout time is approximately 10 seconds) and DS5 will flash three times before the relay will come back
on (refer to Table 1). If this fault does not occur, reduce the distance between the laser and the target and
repeat the test.
CAUTION
DO NOT WAIT FOR A FAULT TO OCCUR BEFORE PERFORMING PREVENTIVE MAINTENANCE.
DO NOT CONTINUE TO RELY ON THE LASERGUARD SYSTEM IF A FAULT HAS OCCURRED UNTIL
MAINTENANCE HAS CORRECTED THE PROBLEM.
