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5. CALCULATING "VALVE CAL"
1) The initial Control Valve calibration number is 2123 for C-Sd, or 743 for C-FC.
After operating the system, you may desire to refine this number. See definitions
below:
For FAST VALVE (C-F or C-FC):For STANDARD VALVE (C-Sd):
Valve Backlash Digit Controls the time of the first correction pulse after
a change in correction direction is detected.
(INC to DEC
-or-
DEC to INC).
Range: 1 to 9 1-Short Pulse
9-Long Pulse
Valve Speed Digit Controls response time of Control Valve motor.
CAUTION: Running the Control Valve too fast will
cause the system to oscillate.
C-Sd Valve Control Product 1 Range: 1 to 9 1-Slow
9-Fast
C-F or C-FC Valve Control Product 2-5 Ranges: 0 to 9 0-Fast
9-Slow
Brake Point Digit Sets the percent away from target rate at which the
Control Valve motor begins turning at a slower rate, so
as not to overshoot the desired rate.
Range: 0 to 9 0 = 5%
1 = 10%
9 = 90%
Dead-Band Digit Allowable difference between target and actual applica-
tion rate, where rate correction is not performed.
Range: 1 to 9 1 = 1%
9 = 9%
6. CALCULATING "RATE CAL"
The application rate in lbs/acre [kg/ha] is entered as RATE CAL. Consult the
equipment manual to insure that the selected gate opening is capable of applying
at this application rate.
NOTE: The Spreader Constant must be recalculated anytime the gate opening is
changed.
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