Chapter 12
208 Viper Pro Installation & Operation Manual
Rx Map Issues
Coverage Map Issues
Product spread in
zero rate zones
• Bed creep • Adjust hydraulic valve to stop the bed creep.
• Wrong valve type on
vehicle
• Must use either a Fast Close or PWM Close valve.
• Incorrect valve setting • Check valve or PWM setting.
Rate sensor failure
alarm activated
when enabling a
product in automatic
control mode
• Min PW value too low
• Refer to the PWM Control Valve Tuning section on page 236 for
information on using the PWM calibration assistance or
automatic calibration features and properly adjust the Min PW
value for the control system.
Issue Possible Cause Solution
Only one
prescription map
loads
• A multi-product VRA
registration is not
available
• Purchase a multi-product registration from a local Raven dealer.
The prescription
map does not
display properly
• Wrong datum type • Use WGS-84 decimal degrees when creating an Rx map.
Issue Possible Cause Solution
Gaps displayed in
coverage map
• Section widths not set
correctly
• Check section widths and center values.
• Guidance and total
section width not the
same
• Set guidance width and total section width to the same value.
Product coverage
displayed in zero
rate zones
• Vibration chatter in
encoder
• Make sure that the encoder is firmly mounted. Increase value in
“Zero Rate Tolerance.”
• Valve or motor is not set
to close completely
• Adjust valve or motor to close or stop completely with no rate
applied.
Cannot achieve
target rate
• Driving too fast for
vehicle
• Speed may exceed capabilities of vehicle to deliver product.
Slow down the vehicle or configure the vehicle to supply a higher
amount of product.
• Calibration numbers
incorrect
• Check and adjust meter calibration, density, and other calibration
numbers.
• Speed calibration
incorrect
• Check and adjust speed calibration setting.
Issue Possible Cause Solution
To Next Page
Loading...
