100
Maximum Rate
Only for pulse outputs. Enter the maximum pulse rate that the metering pump is designed
to accept (10 - 360 pulse/minute range).
Error Output
Only for analog outputs. Enter the output mA desired when the sensor is not giving the
controller a valid signal. The acceptable range is 0 to 21 mA.
Primary Output
Select the control output that will be used along with the disturbance input to calculate the
control signal for the disturbance output.
Disturbance Input
Select the virtual input or analog output that will be used along with the Primary Output
to calculate the control signal for the disturbance output.
Trigger Input
Select a state-type digital input or relay output that will be used to initiate the disturbance
control, or select None if the disturbance control will be active all the time.
Activated
Only appears if the Trigger Input is other than None. If a digital input is the Trigger
Input, select between When Open or When Closed. If a relay output is the Trigger
Input, select between When On or When Off.
Trigger Mode
Only appears if the Trigger Input is other than None. Select the action to take when the
disturbance control algorithm has been activated. Multiply is used to calculate the control
signal by multiplying the Disturbance Input value by the primary control output value.
Use Disturbance is used when the Disturbance Input selected is a control output, and the
action desired is to use this different control algorithm when in the disturbance state.
5.3.29
Analog or Control Outputs, Proportional Control Mode
Output Details
The details for this type of output include the output %, HOA mode or Interlock status, accumulated on-time,
alarms related to this output, current cycle on time, relay type and the current control mode setting.
Settings
Touch the Edit icon to view or change the settings related to the output.
Set point
Enter the sensor process value at which the output % will be the programmed minimum %.
Proportional Band
Enter the sensor process value away from the set point at which the output % will be
the programmed maximum %.
Minimum Output
Enter the lowest output %. If the output should be off at the set point, this will be 0%.
Maximum Output
Enter the highest output %.
Hand Output
Enter the output % desired when the output is in Hand mode.
Off Mode Output
Enter the output mA value desired when the output is in Off mode, or being Interlocked, or
during a calibration of the sensor being used as an input. The acceptable range is 0 to 21 mA.
Error Output
Enter the output mA desired when the sensor is not giving the controller a valid signal.
The acceptable range is 0 to 21 mA.
Input
Select the sensor input to use for proportional control.
Direction
Select the control direction.
5.3.30
Analog or Control Outputs, Flow Proportional Mode
Overview
In Flow Proportional control mode, the controller monitors the rate of flow through an analog or digital flow meter,
and continuously adjusts the analog (4-20 mA) output proportional band to achieve a target PPM level.
The user enters the target PPM and the data necessary to calculate the proportional band (the water flow rate at
which the maximum pulse rate will occur) required to maintain the target PPM with that flow rate of water.
