Seed Hawk Raven 2011 - Manual (Page 217)

APPENDIX
D
Manual No. 016-3001-003 207
Appendix D
Calculating
Calibrations for Liquid
and Granular
Applications
Calculating Valve Calibration
To ensure that you are applying the proper amount of product to the field, you must calibrate the valves used to
deliver the product. Viper uses the valve calibration number to control the response time of the control valve
motor to changes in the vehicle speed.
The following control valve calibration numbers are recommended for the valves listed:
Each digit in the calibration number corresponds to a specific function of the valve. The following functions
apply to the digits in the valve calibration number:
• Valve Backlash digit: This is the first digit in the valve calibration number.
• Valve Speed digit: This is the second digit in the valve calibration number.
• Brake Point digit: This is the third digit in the valve calibration number.
• Dead Band digit: This is the fourth digit in the valve calibration number.
Valve Backlash Digit
This value controls the time of the first correction pulse after detecting a change in correction direction. The
values range from 1 to 9, where 1 is for a short pulse and 9 is for a long pulse.
Valve Name Calibration Number
Standard Valve 2123
Fast Close Valve 743
Fast Valve 743
PWM Valve 43
PWM Close Valve 43
Standard Motor Control Valve 123
Valve Backlash Digit
Valve Speed Digit Break Point Digit
Dead Band Digit