Raven SCS 5000 Series, Инструкция по установке и эксплуатации

Страница: 65 / 104

Manual No. 016-0159-925 Rev. F 57
Console Calibration
Tier 2 High Volume per Minute
On a 3 tier system, this selects the maximum allowed volume per minute before both tiers 1 and 2 are enabled.
Set to zero for a 2 tier system.
Percent Tier Disable
Percentage factor at which the previously described volume per minute settings will cause the system to
disable the higher tier.
Dual Loop Control Mode Settings
The dual loop control feature is designed for use with low application rates and requires a pressure transducer
with a liquid application system controlled with a PWM valve. The dual loop feature uses both the flow meter
and pressure transducer to enhance the control response during operation at low application rates. The default
setting for this feature is disabled.
Flow Cal
The flow cal value may be used when controlling a liquid application system using a PWM control valve. This
value sets how the system responds to rate control inputs while product is flowing through the flow meter. A
value between 11 and 999 may be entered for the flow cal value. The default value for the flow cal is 103.
The flow cal value has two components which may be used to adjust the response of the application system.
Note:
It is recommended to set the system gain value prior to making any adjustments to the flow cal
value. When adjusting the flow cal value, it is not recommended to adjust the last digit (i.e. ‘3’ in
the default value).
Flow System Gain. The first digit(s) of the flow cal correspond to a flow system gain between 1 and 99. The
higher the flow system gain, the more aggressive the system will respond to changes in flow rate.
Note:
When entering a flow gain value from 1 to 9, it is not necessary to enter a zero in front of the value.
If the system adjusts to rate control changes too slowly, increase the flow gain digit(s) to increase the
system response rate. If the system overshoots or oscillates around the desired flow rate, decrease the flow
gain digit(s) to help stabilize the system.
Dead Band Digit. The last, or right most, digit in the flow cal value is the dead band digit. The dead band digit
is the allowable difference between the target rate and the actual application rate. The values range from 1
to 9, where 1 equals 1% difference and 9 equals 9% of the difference.
Flow System Gain
Dead Band
Percentage
103