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5.5.11
Controller Parameters
The following parameter settings are only effective in the
Pressure
control
mode.
The control process can be optimized by entering the controller parameter settings via the
interface. By defining and transmitting the optimum parameter setting for each nominal
value (setpoint), very fast and dynamic processes can be designed.
Selecting the controller type
For deciding which controller type is best suited to your control task and information on the
controller parameter settings see «Selecting the controller type, page 63».
•
Auto controller
For Auto (proportional/integral controller), select RAS=1 … 99 (1 = slow, 99 = fast).
Command
Response
Entry
RAS=xx
RAS=xx
Example
RAS=05
RAS=05 (Auto)
Inquiry
RAS?
RAS=0
Table 5-20
•
PID controller
For the PID (proportional/integral/derivative) controller, select RAS=0 and proceed to the
Gain Kp, Reset time Tn and Derivative time Tv settings.
Command
Response
Entry
RAS=xx
RAS=xx
Example
RAS=_0
RAS=_0 (PID)
Inquiry
RAS?
RAS=_0
Table 5-21
