Determining Pid Constants (At, St, Manual Setup); At (Auto-Tuning); At (Auto Tuning) - Omron E5GN User Manual

3.8 Determining PID Constants (AT, ST, manual setup)

JAT (auto-tuning)
F Description

Determining PID Constants (AT, ST, manual setup)

3.8
• When you execute auto tuning, the optimum PID constants for the set
point during program execution are automatically set by forcibly chang
ing the manipulated variable to calculate the characteristics (called the
limit cycle method") of the control target.
• To execute AT (auto tuning), specify 
(auto tuning), specify 
• AT (auto tuning) cannot be executed during ON/OFF control.
• The result of AT (auto tuning) is mirrored in the proportional band
(P)", integral time (I)" and derivative time (D)" parameters in the
adjustment level".
Adjustment level
Proportional band
Integrated time
Derivative time
AT (auto tuning) is started when the AT execute/cancel" parameter is set
to ON". During execution of AT, the No.1 display for the AT execute/can
cel" parameter blinks. When AT ends, the AT execute/cancel" parameter
turns OFF, and the No.1 display stops blinking.
AT execute/cancel
If you move to the operation level" during AT execution, the No.2 display
blinks to indicate that AT is being executed.
PV/SP
Only the communications writing", run/stop" and AT execution/can
cel" parameters can be changed during AT execution. Other parameters
cannot be changed.
: AT execute", and to cancel AT
: AT cancel".
During AT execution
During AT execution
No.1 display
No.2 display
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