THE BOOM
30-4
Position Sensors
The main pivot/break-away cylinders, 90ft fold
cylinders, and level cylinders are equipped with inter-
nal position sensors (A). The sensors measure the
position of the rod inside of the cylinder and provide
the system with position information to aid the opera-
tor in making sure that the boom is in the correct posi-
tion to perform many of its functions. This allows the
machine control system to achieve a much finer de-
gree of control over boom motion. The information
can be viewed on the MD3, 120 boom page (B).
The required specific motions exist to provide
smooth, efficient operation. The programmed posi-
tions help prevent mechanical damage to the boom
due to severe imbalance, unintended contact with the
ground, or improper fold sequence.
The sensors are positioned at the factory and
should not require any calibration. If you experience
issues with the positioning of the boom, contact Hagie
Customer Service for assistance.
A
B
Summary of Contents for UpFront 120
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