Norac UC4+ - 5 Understanding Your Uc4+ System; Understanding Performance Issues

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5 UNDERSTANDING YOUR UC4+ SYSTEM
5.1 UNDERSTANDING PERFORMANCE ISSUES
Your UC4+ Spray Height Controller 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. A discussion of performance issues is given below to
help clarify these situations.
5.1.1 Sensitivity (Sensi) Setting
The UC4+ Spray Height Control 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+ Spray Height Control system will try to correct for
height errors. The higher the sensitivity the higher the accuracy. At low
sensitivity a few cm/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.
5.1.2 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.