Decimal Shift; Display Smoothing; Ratio Rate; Agitator - Raven ENVIZIO PRO Installation And Operation Manual

Decimal Shift

Use the decimal shift feature to increase the system accuracy for low application rates. In the standard mode,
the field computer displays values to one decimal place. With decimal shift mode active, the field computer
displays values to two decimal places.
Note:
If the decimal shift feature is changed, be sure to verify all calibration settings to ensure accuracy
of the product control system. Change settings as necessary.

Display Smoothing

Toggle the display smoothing feature to allow the field computer to smooth the rate display on the Guidance
screen. With the feature selected, as long as the actual rate is within 10% of the actual application rate, the
target rate will display as the actual rate on the Guidance screen. The actual rate will be displayed if the actual
rate does not reach the target rate dead band (±10%) within 10 seconds.

Ratio Rate

The ratio rate feature configures the selected control channel to apply an injected chemical at a rate
proportional to the carrier product flow rate. The ratio rate application mode must be enabled via the control
console and a ratio rate cal value must be entered for each product controlled in ratio to the carrier.
Note:
The carrier product must be programmed on control channel 1. If a carrier product is not set as
product 1, the low pressure alarm will not function. If the off rate alarm is triggered frequently
during injection applications in ratio rate mode, access the volume per minute display on the
control console and verify that the target flow rate is within the application range for the pump.
The ratio rate calibration value is entered as the ratio of injected chemical to carrier in ounces per gallon
[deciliters per liter].
For Example:
If the desired ratio of injected chemical concentration is 2 ounces per gallon [0.59 deciliters per liter], enter
a value of 2 [0.59] for the ratio rate cal value. Once the operation conditions in the Normal Application Mode
section on page 29 are set, the system will automatically adjust the rate of injected product in proportion
with the carrier product flow rate.

Agitator

If equipped with an injection system featuring an agitator enabled output, this option enables or disables a
chemical agitator.

PWM Smart Control

The PWM smart control feature may be enabled to allow the control system to estimate the required PWM duty
cycle for changes in vehicle speed or target rate, or when the hydraulic valve is toggled on. When this feature
is enabled, control response will be much more aggressive.
Note:
Smart control will be tuned during the PWM calibration. Refer to the Modify PWM Settings (PWM
or PWM Close Valve) section on page 106 for additional information on performing calibration or
adjustments for PWM type control valves.
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