CHAPTER 4
24 RCM - Sprayer and Hawkeye® 2 Calibration and Operation Manual
SYSTEM SETTINGS TAB
CONTROL VALVE SETTINGS AND TUNING
To tune the control valve or enable additional features and options:
1. Open the UT Menu and select the RCM - Sprayer Menu button.
2. Select the Tools Menu softkey along the right side of the display.
3. Select the System Settings tab along the top of the display.
4. Select the Control Valve Setup button on the System Settings page. The following settings and options are
available to help tune the control valve for the specific application system and to help improve applicator
efficiency:
CONTROL VALVE TYPE
Displays the type of control valve selected for product control operations.
NOTE: The operator will have to either create a new machine profile or edit the existing profile to change the
control valve type or enable some features of the product control system. Refer to Chapter 3, System
Calibration, for additional assistance with completing the Machine Profile.
A PWM type control valve is preferred for proper operation of the RCM - Sprayer with Hawkeye® 2 nozzle control
system. A second pressure transducer is required for proper operation with a Fast Valve or Standard Valve.
NOTE: This setting can only be changed during system calibration.
VALVE RESPONSE RATE
The valve response rate determines how aggressively the system will adjust to changes in pressure, flow, and
speed. This value has a range from 1 to 100.
If the system adjusts to rate control changes too slowly, increase the value to speed up the system response. If the
system consistently overshoots the target rate or oscillates around the target rate, decrease the value to help
stabilize the system.
NOTE: Avoid setting both the valve response rate and NCV2 Response Sensitivity values above 70. Refer to
the NCV2 Response Sensitivity section on page 26 for more information about the response rate
setting.
CONTROL DEADBAND
Enter a value between 1 and 9 to set the allowable difference between the target application rate and the actual
rate. Rate correction is not performed as long as the application rate is within the allowable range.
Enter a value of 1 to set a ±1% tolerance between the target and actual application rates. A value of 9 equals a ±9%
tolerance. The default rate control deadband value is 1%.
RCM - Sprayer Menu Tools Menu System
Settings
UT Menu
Control Valve
Setup
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