Norac UC4 - 4.5 Active and Passive Roll

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Possible Cause(s) Suggested Solution(s)
d) Wear in a mast-style
lift system
d) Apply shims or filler strips to the
mechanism, or adjust it, if applicable.
NOTE: Some sprayer designs use a mast-style lift
rather than parallel links. The sliding surfaces
on some of these machines are susceptible to
wear which leads to this symptom. The UC4
Passive Roll control cannot take into account
error on the lift mechanism.
4.5 ACTIVE AND PASSIVE ROLL
4.5.1
 Poor performance of Active/Passive Roll control
Possible Cause(s) Suggested Solution(s)
Weak or intermittent rod
readings – Improper
sensor alignment
Check and adjust sensor alignment (Section 6).
4.5.2
 Incomplete Setup of the Roll section during Boom Geometry Tuning
 Poor performance or improper action of Active Roll control
Possible Cause(s) Suggested Solution(s)
Wear in pins and linkages
of main lift section
NOTE: This is commonly
found on sprayers equipped
with Active Roll control.
Check the pins and linkages. Adjust or replace
them, if necessary.
4.5.3
 Poor performance or improper action of Passive Roll control
Possible Cause(s) Suggested Solution(s)
a) Target rod is not
detected during
System Setup.
a-1) Verify that the system is using passive roll
("P"), as indicated by type "Roll OnP"
found in the Roll channel SETUP menu.
a-2) Perform a ReTune.
b) Main lift sensor and
target rod are installed
on a common frame
b-1) Install them properly (Section 6.2).
b-2) Perform a ReTune.