User's Manual

15 LS420 Universal User Manual V2.91 2003-01-21.doc

Manual zeroing: the easiest method for two people

Mount the angle sensor with the indicator light pointing to the boom tip. Set the boom at a

known angle such as forty-five degrees. Finely adjust the position of the bolt in the curved

slot until the angle sensor displays the correct value; allow the sensor a few seconds to en-

sure it has the most accurate reading. The system should then show the correct angle from

zero to ninety degrees.

Angle sensor assisted zeroing: the easiest method for a single person

Step 1) Place the boom at zero degrees.

Step 2) Mount the angle sensor with a bolt in the fixed position hole and tighten loosely.

Step 3) Rotate the angle sensor to vertical and hold steady until the indicator light stops

flashing for ten seconds. Rotate the angle sensor to horizontal (with the indicator light

pointing to the boom tip). The indicator light will flash while changing from green to red de-

pending on slight changes in the angle: this indicates that the angle sensor is in installation

mode. The angle sensor should stay in installation mode for one or two minutes.

Step 4) The colour of the light will help to place the angle sensor at zero degrees from

horizontal. The goal is to position the angle sensor such that the indicator light is green

without flashing: this indicates that zero has been obtained (the angle sensor is placed at 0

to 1 degrees above horizontal). Then place the second bolt in the curved slot and tighten

both bolts securely. When the sensor angle is between 1 and 5 degrees, the light will flash

green. Below 0 degrees, the light will flash red. Around zero, if the indicator light flashes red

the curved slot side of the angle sensor must be raised and if it flashes green the curved slot

side of the angle sensor must be lowered. If the indicator light goes out before zero has

been obtained, repeat step 3. Zero could be hard to obtain; this is normal.

Indi

cator light in 'installation mode'

Angle Sensor at 30 degrees

Angle Sensor at 90 degrees