Chapter 4
50 OmniSeed™ Viper Pro™ Installation & Operation Manual
12. Weigh the product dispensed (minus the weight box) and enter the weight in the cal weight calibration
assistant.
13. Touch the Calculate button. Viper Pro will calculate the cal weight value and enter the value on the Node
Settings screen.
14. Toggle the product 1 switch off. To perform a catch test for additional product nodes or control channels,
toggle the appropriate product switch to manual and repeat the above process as necessary.
15. Touch OK to save the entered value or proceed to the optional Valve Cal(s) section if applicable to continue
with the initial set up process.
Valve Cal(s)
Note:
The Viper Pro automatically enters the recommended valve cal value for the valve type selected
during the procedure in the Application and Control Valve Type(s) section on page 40.
1. Touch within the Product Control area at the bottom of the main screen.
2. Make sure that Node 1 is selected on the CAN Controller Status screen and touch within the second data
display area, or the Product Control Settings area, on the CAN Controller Status screen.
3. Touch the Next button to view additional settings for the selected product node or control channel.
4. Touch the displayed valve cal value and use the keypad to enter the calibration value for the installed
control valve.
Note: Raven recommends the following initial valve cal values:
These values are good starting points and will generally yield adequate results, however, the valve
cal should be refined for the individual control valves installed on the specific machine. Refer to
Appendix B, Calculating the Calibration Values, for more information on calculating the valve cal.
For ground drive carts use the standard valve cal as the initial valve cal value. For hydraulic drive carts,
enter the PWM close valve value as the initial value. These values are good starting points and will
generally yield adequate results, however, the valve cal should be refined for the individual control valves
installed on the specific machine. Refer to the Valve Cal section on page 255 for more information about
adjusting the valve cal.
Note: When operating a hydraulic drive system at extremely low seed application rates, the valve cal
may need to be adjusted to slow the PWM close valve and keep the seed rate from fluctuating at
these low rates.
5. Repeat the above process for any remaining nodes or product control channels as necessary.
6. Touch OK to save the entered value or proceed to the optional Valve Cal 2 (Optional) section if applicable to
continue with the initial set up process.
Valve Type Calibration Value
Standard Valve 2123
Fast or Fast Close Valve (C-F or C-FC) 743
PWM or PWM Close Valve (C-P or C-PC) 43
(Injection Pump) Motor Control Node
(select Standard Valve type)
123
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