Using PID_3Step
5.2 PID_3Step V2
PID control
130 Function Manual, 03/2017, A5E35300227-AC
To perform pretuning, follow these steps:
1. Double-click the "PID_3Step > Commissioning" entry in the project tree.
2. Select the entry "Pretuning" in the "Tuning mode" drop-down list in the working area
"Tuning".
3. Click the "Start" icon.
– An online connection will be established.
– Value recording is started.
– Pretuning is started.
– The "Status" field displays the current steps and any errors that may have occurred.
The progress bar indicates the progress of the current step.
Note
Click the "Stop" icon when the progress bar has reached 100% and it is to be
assumed the controller
tuning function is blocked. Check the configuration of the
technology object and, if necessary, restart controller tuning.
If pretuning was performed without an error message, the PID parameters have been tuned.
PID_3Step switches to automatic mode and uses the tuned parameters. The tuned PID
parameters will be retained during power OFF and a restart of the CPU.
If pretuning is not possible, PID_3Step responds with the configured reaction to errors.
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