The Speed_P item selects the control output speed. The
greater the Speed_P setting, the faster the control output.
Pressure Control
Sensitivity
The Sensitivity_P item selects the integral dead band. The
integral dead band determines when the controller uses
integral control (slow control), and when the controller
enters PID control (fast control).
Each % of Sensitivity_P represents 1 ft/min that the room
pressure must be away from set point before the Model
RPC30 controller enters PID control (fast control). For
example, if the Sensitivity is set to 80% and the set point
is 100 ft/min, the room pressure must drop below 80 ft/min
or rise above 120 ft/min for the controller to enter PID
control.
Controller may hunt if Sensitivity is set too high, resulting
in poor control and loss of containment.
The Speed_F item selects the control output speed. The
greater the Speed_F setting, the faster the control output.
The Sensitivity_F item selects the integral dead band. The
integral dead band determines when the controller uses
integral control (slow control), and when the controller
enters PID control (fast control).
Each % of Sensitivity_F represents 5 cfm that the flow
rate must be away from set point before the Model RPC30
controller enters PID control (fast control). For example, if
the Sensitivity_F is set to 80% and the set point is 500
cfm, the flow must drop below 400 cfm or rise above
600 cfm for the controller to enter PID control.
Exhaust Control
Direction
The Exh Cntl Dir item determines the control signal’s
output direction. As an example: if the control system
closes the exhaust damper instead of opening the damper,
this option will reverse the control signal to now open the
damper.
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