Turn Compensation Feature - Raven RCM-Sprayer Hawkeye 2 Calibration And Operation Manual

9. On the UT, set Pump PWM to about 30%. For systems without NCV2s, turn off the master switch and close
section valves. For systems with NCV2s, set the NCV2 duty cycle to 0% to close the nozzle control valves and
maintain a safe pressure in the boom.
10. Visually check that none of the tips are spraying or dripping. Refer to Testing for Leaks section on page 93 for
additional assistance and troubleshooting if leaks are observed.

TURN COMPENSATION FEATURE

NOTE: Turn compensation is only available for systems with the
To verify the Turn Compensation feature is enabled and operating:
NOTE: Complete the procedure outlined in the System Function section on page 16 to validate the nozzle
control valve function prior to performing the following procedure.
Turn Compensation is automatically calibrated during the calibration wizard. If the feature is not
operating as described below, refer to the Enable Turn Compensation section on page 34 for
assistance with calibrating the turn compensation feature if necessary.
1. Move the implement to an open area where the equipment may be driven in quick, tight turns.
2. Verify that the turn compensation feature is enabled.
3. Set the system to automatic mode and toggle the section and master switches to the on positions. Refer to
Chapter 6, Operation for additional assistance with operation of the nozzle control system.
4. While driving at a speed between 5 and 10 mph [8 and 16 kph] and maintaining a safe working distance,
observe the inner-most and outer-most spray tips while the implement is turning sharply.
NOTE: The NCV2 PWM percent value may also be used to monitor the operation of nozzle control valves
across the spray boom. Refer to Chapter 8, NCV2 Diagnostics, for additional assistance with on-screen
nozzle control valve diagnostics.
When turn compensation is enabled and the machine is turning, the nozzle control valves toward the outside
of the corner will output a higher flow rate (higher PWM percent), while valves toward the inside of the corner
will output a reduced flow rate (lower PWM percent) or may shut off. NCV2 diagnostics and performance may
be viewed in the NCV2 Readings display shown in the NCV2 Information menu. The difference between inner
and outer flow rates will vary depending upon the machine speed, yaw rate, and implement width. Turn
compensation may also be observed on the Diagnostics Info page. ECU Yaw Rate will be zero while stationary.
The displayed yaw rate will be positive when the machine is turning to the right and negative when the
machine is steering to the left.
5. If the operator is able to observe a difference in the spray pulsing, or the on-screen PWM percent, the turn
compensation feature is working correctly. If there is no difference between the PWM percent values across the
implement width, recalibrate the turn compensation feature and repeat the test.
System Calibration: Functional Inspection
SYSTEM CALIBRATION
Hawkeye® 2 NCV system.
17