OPERATOR’S MANUAL
Control Point
®
11001-1489-201702 Rev B
KEYBOARD PROGRAMMING / 47
The following configuration constants (PWM OFFSET, PWM SAT, SYS
RSPNS, VALV BOOST, and AFILT) are for descriptive purposes only. The
correct parameters automatically calculate during GRANULAR SYSTEM
RESPONSE calibration. Factory defaults are adequate until calibration is
run. These values can be adjusted any time to fine tune system
performance.
– PWM OFFSET – Identifies the minimum amount of PWM valve
drive required to start the granular mechanism moving.
– PWM SAT (PWM Saturation) – Identifies the amount of drive the
granular valve system requires to operate a PWM valve at full
speed. This value is not displayed when SRVO DRV is set to YES.
– SYS RSPNS (System Response) – Adjusts the control system
response time to the hydraulic and mechanical systems of the
granular control channel on each particular spreader vehicle.
– VALV BOOST (Valve Boost)– Increases the amount of system
response initially applied to the granular control to reach final
operating speed as quickly as possible.
– AFILT (A Filter) – Filters the feedback signal to minimize effects of
electrical noise and mechanical vibrations. The smaller the number
the greater degree of filtering.
4. Press F3 to return to the GRANULAR CONFIG screen.
5. If using other granular materials with known SPR CON (spreader
constant), enter those values now.
Note: The system has only one granular control channel, so only one
configuration parameter (PWM hydraulic valve) is used. All four materials
remain the same except for the SPR CON.
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