Seed Hawk Raven 2012 - Manual (Page 200)

Chapter 10
188 Seed Hawk® Viper Pro™ Installation & Operation Manual
4. Press the Next key on the cal weight option to advance to the next settings screen.
Note:
The second settings screen is only accessible if the valve type for the selected product bin is set to
PWM or PWM close. Refer to the Application and Control Valve Type(s) section on page 32 for
detailed information on valve type selections.
The following settings are displayed on the second settings screen:
Note:
Use the Next or Prev keys to move the cursor between the screen options. Pressing the Prev key
on the PWM frequency option will return to the previous settings screen. Press the Next key on the
min PW option to exit the settings menu and return to the bin calibration screen.
PW Freq. Press the Enter key and use the INC or DEC keys to set the coil frequency of the PWM valve. The
default value for hydraulic drive systems is 60 Hz.
Min PW. Press the Enter key and use the INC or DEC keys to set the minimum desired RPM or hydraulic
output (zero point or shutoff point) for a Pulse Width Modulated (PWM) control valve.
Max PW. Press the Enter key and use the INC or DEC keys to set the maximum desired RPM or hydraulic
output (zero point or shutoff point) for a Pulse Width Modulated (PWM) control valve.
Note:
Refer to PWM Calibration Assistance section on page 241 for details on using the calibration
assistance to calculate the Min and Max PW values.