Seed Hawk Raven 2012 - Manual (Page 50)

Chapter 4
38 Seed Hawk® Viper Pro™ Installation & Operation Manual
Fan Cal
The Seed Hawk Viper Pro must be calibrated to monitor the fans used to provide air flow for product bins on
the air cart.
To configure the air cart fans from the Viper Pro main screen:
1. Touch within the Product Control area at the bottom of the main screen.
2. Touch within the Fan RPM display area on the CAN Controller Status screen to display the Fan Calibration
screen.
Fan Cal
Enter the number of pulses detected by the fan sensor per revolution of the fan. Typically, this value will be 2.
Low RPM Limit
Enter a value for the low limit to activate an alarm if the fan speed (RPM) falls below the set value.
Note:
If the fan alarm is enabled when operating with ground drive systems, the master clutch will not
activate unless the fan RPM is above the low limit to prevent plugging seed tubes if the fan is not
providing enough air flow to move product.
High RPM Limit
Enter a value for the high limit to activate an alarm if the fan speed (RPM) rises above the set value.
Fan Alarm
Select the ‘Enabled’ option to provide an alarm if the fan speed is out of the range set by the high or low RPM
limits. If this selection is set to ‘Disable,” the Viper Pro will not provide an alarm if the fan speed is out of range.
Note:
If the fan speed is below the low limit when operating with ground drive systems, the master clutch
will not enable.