Great Plains 3N-3020 Material Rate - Manual (Page 19)

4/28/2004 196-366B
Great Plains Mfg., Inc. 19
6. Press SETUP key. Press PRODUCT key. Select
product and press EDIT SETTINGS. Set the follow-
ing:
Controller Device: Rawson Accu-Rate.
Cal. number for act. rate: Set to 0
Actual Rate Scale Factor: Set to 1.000
Target Rate Units: Set to Seeds.
Actual RAte Units: Set to Seeds
Target conversion Number: If your recipe (.tgt file) is
written using the entire number as the desired rate.,
i.e. 30,000 seeds/acre on the recipe means 30,000
seeds/acre is the desired rate, enter a 1.000. If the
recipe is written using a different number, i.e. 30 on
the recipe means a population of 30,000, then you
will need to enter the conversion multiple—in that
case 1,000.
Target Rate increment: Determines the increment
value by which you can change the manual target
rate with each press of the arrow keys.
7. Press FIELD key. Set Field. Set Product (press key
to right of product).
Settings for Great Plains Precision Popula-
tion Controllers
1. Connect PF3000 to Console using 9-pin serial ca-
ble as shown in Figure 30, page 17.
2. Follow instructions on page 16 to set Calibration
Number based on row spacing and cup setting.
3. Press FUNCTION key and go to Rawson mode.
Press FUNCTION key until the Nominal Rate ap-
pears on the display. Using the Up/Down arrow
keys, set the Nominal Rate to the same number as
you set the PF3000 in step 5 in the preceding sec-
tion. Once Nominal Rate is set, press FUNCTION
key until the main operating screen appears, as
shown in Figure 8, page 8.
4. Press ON/VR key again to toggle to VR mode. VR
should appear on the screen along with the Rate
that is being sent from the PF1000, as shown in Fig-
ure 10, page 8. Verify that the rate shown on the GP
Controller Console is the same as the recipe sent
from the PF3000. Press ENGAGE key to activate
the Precision Population Controller.
5. To change rates manually when in VR mode, simply
touch the Up/Down arrow keys. This will change the
Controller to the rate you select manually. To return
to VR, simply touch the ON/VR key to toggle back to
VR mode.
Troubleshooting GPS-based Seeding
with PF3000
1. No Target Rate appears on the PF3000
• Has field been selected? Select target file (see
PF3000 Settings, Step 4).
• Check recipe to verify that it is valid.
• If recipe calls for zero rate as the default, do you
have GPS signal, or are you outside of field?
2. No Actual Rate appears on the PF3000.
• Actual rate cannot be logged using the PF3000 with
the Great Plains Precision Population Controller.
3. Target Rate appears on PF3000 but not on GP
Controller Console.
• Make sure GP Controller Console is set to VR
Mode (see Figure 29, page 15).
• Double-check all cable connections.
• Check Nominal rates on both the PF3000 (PF3000
Settings, Step 5) and on the GP Controller Console
(GP Settings, Step 2). These must be set to the
same number.
4. Rates on GP Controller Console and on PF3000 do
not match.
• Check Nominal rates on both the PF3000 (PF3000
Settings, Step 5) and on the GP Controller Console
(GP Settings, Step 2). These must be set to the
same number.
• Re-check GP calibration number, with row spacing
and cup setting.
• The recipe rates from the PF3000 are in 4% incre-
ments. If the two rates are within this 4% range, the
units are operating normally.
• Check the target conversion number (PF3000 Set-
tings, Step 6). If the recipe requires a target conver-
sion number, i.e. the recipe is for 25 which means
25,000 seeds/acre, the target conversion number
will be 1000. In this case the Nominal Rate on the
PF3000 and on the GP Console should be near
25,000. See PF3000 Settings, Step 5 for calculat-
ing Nominal Rate.
5. Population Monitor rate does not match GP Con-
troller Console.
• Make certain that PF3000 and GP Controller Con-
sole agree. If not, see Troubleshooting step 4
above.