UC4™ Total Control™ Automatic Boom Height Technical ... - Norac

6 UNDERSTANDING YOUR UC4 SYSTEM
6.1 UNDERSTANDING PERFORMANCE ISSUES
Your UC4 height control system will work well in most situations. However,
as with any equipment, it is important that the operator remains alert at all
times. There may be some field and terrain situations where performance is
diminished. In these situations the operator must resume height control of the
booms manually (Section 5.2.3). A discussion of performance issues is given
below to help clarify these situations.
6.1.1 Sensitivity (Sensi) Setting
The UC4 system is configured to work well in most conditions, with warm
hydraulic oil, at a sensitivity (Sensi) setting of five. When you first
begin operation at the start of a day, it may be necessary to operate at a
lower sensitivity until the oil has reached normal temperature. Keep
increasing the Sensi setting until the performance is optimized.
Different types of terrain may require different Sensi settings. The
Sensi setting controls more than just response time. It also determines
how accurately the UC4 system will try to correct for height errors. The
higher the sensitivity the higher the accuracy. At low sensitivity a few
inches of error will be tolerated. At high sensitivity, virtually no error will
be tolerated. Therefore, the system will be much more active at high
sensitivity than at low sensitivity.
NOTE: Field conditions and operator preferences determine the
appropriate Sensi setting. On some sprayer models, it may
be difficult to reach an optimum level of sensitivity while
maintaining good boom stability. This could be an indication
that the boom is mechanically under-damped for control
purposes. Additional shock absorbers/dampers can
dramatically improve automatic control performance. Some
UC4 kits come complete with additional damper kits. Other
sprayer models have damper kits available from the sprayer
manufacturer or from NORAC as optional equipment.
Contact NORAC or your sprayer dealer for more assistance.
6.1.2 Boom Reaction Time
There are two key factors that determine how quickly your boom can react
to changes in terrain. The first factor is the available hydraulic speed. The
maximum hydraulic speed of your boom was designed by the sprayer
manufacturer and is not improved or diminished with the addition of the
UC4 height control system.
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