Instructions
9.1 PID_Compact
PID control
Function Manual, 03/2017, A5E35300227-AC
279
Procedure for starting the control
After the download to the CPU the PID_Compact is in manual mode with manual value 0.0.
To start the control, follow these steps:
1. Open the Commissioning of the technology object "SLI_Tech_PID_Compact".
2. Click the "Start" button in the "Measurement" area.
Measurement starts and PID_Compact can be activated.
3. Pretuning is selected.
Click the "Start" button in the "Tuning mode" area.
A pretuning is performed. The PID parameters are automatically adjusted to the process.
After the completion of the pretuning PID_Compact switches to automatic mode.
Note
Alternative to start PID_Compact
Alternatively, you can switch PID_Compact to automatic mode in the "Online status of
controller" area with the "Stop PID_Compact" / "Start
PID_Compact" without pretuning. In
this case the controller uses default values for the PID parameters and shows a worse
controller behavior for the application case.
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