Great Plains VARIABLE RATE KIT Operator Manual - Manual (Page 16)

16 Air Drill Variable Rate Kit Front Parts Great Plains Mfg., Inc.
166-263M Front Parts 6/23/2010
Create a Controlled Material
Re-define at least one material. Otherwise, create at
least one material. Some key steps:
80. Type must be set to GRAN SEED CONTROL or
GRAN FERT CONTROL.
81. Select or Disable: Preset Method
If using preset method, select initial rate increments
that are only a few percent, so as to have fine con-
trol of the meter scale indicator. These can be
changed to coarser increments after calibration.
82. Density must be accurately entered.
83. Enter the Cal Const if one is available for your seed
type. This value does not affect the calibration pro-
cess, and is replaced during calibration, but is use-
ful for comparison. The calibration constant
developed during calibration should be similar to the
chart number.
84. Set Variable Cal Const if one is available for your
seed. This is from a list of names pre-programmed
into the monitor software. It is usually not the same
name as the material name setup on page 15. In
this example, “Wheat 2S”, the “2S” refers to the
(factory standard) “2 star” meter flute configuration.
Pick a seed constant closest to yours in terms of
physical seed characteristics and meter flute config-
uration.
If a suitable Variable Cal Const is available, the sys-
tem can more accurately compensate for manual
calibration cranking speeds that differ from field
rate.
If no suitable Variable Cal Const is available, crank
at an rpm near field speed at step 92.
Example Non-Preset Material Setup:
1-16 CH Wheat HRW Comment
CHANNEL 1 or 2
Per meter
being config-
ured
Type
GRAN SEED CONTROL
or
GRAN FERT CONTROL
Must be one
of these
Units Lb/ac with Rev/ac Example
Preset
Method
Disabled Example
Target Rate 60.0 LB/AC Example
Max Rate 78.0 LB/AC Upper + limit
Min Rate 48.0 LB/AC Lower - limit
Inc/Dec % 1.0 % Example
Density 60.00 LBS/BU Example
#Towers 5
Per Imple-
ment
Cal Const 77591
Optional: Use
nearest chart
value
Variable Cal
Const
Wheat 2S Optional
Shaft RPM
Low 10
High 50
RPM
Prod Level
Alarm
0 LBS
Seeds per
Pound
3000 S/LB Example
High Pop
Alarm
20.0 % Example
Low Pop
Alarm
20.0 % Example
ROW
WIDTH
__ IN
Or use Auto-
Update Width
ON(-)/
OFF(X)
PATTERN
-------------------------
(unless tramline in use)
Row Fail
Rate
2 / 1 S/SEC
See ACC
manual