Autonics TM Series - Auto-tuning

6 Parameter Settings and Functions
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6.3.4 Auto-tuning
In PID control, auto-tuning processes the control subject's thermal characteristics and thermal
response rate, and then determines the necessary PID time constant. Application of the PID time
constant realizes fast response and high precision temperature control.
6.3.4.1 Auto-tuning ON/OFF
 Auto-tuning automatically stores PID time constants upon termination. These PID time
constants can then be modified by the user to suit their usage environment.
 When performing auto-tuning, the output LED of the pertinent channel flashes at 1 second
intervals. Once auto-tuning is complete, the output LED automatically goes off, and the
parameter value returns from ON to OFF.
Setting group
Preceding
condition
Parameter
Setting
range
Factory
default
Unit
Control Operation PID
Auto-Tuning
Execute
OFF, ON OFF -
 If manual control is selected during auto-tuning, auto-tuning operation will be closed.
 If sensor break error occurrs during auto-tuning, the sensor is automatically closed and the
previous PID time constant kept.
 Auto-tuning continues to run even if the temperature reading exceeds or falls below the
input range.
 When auto-tuning is in progress, parameters can only be referenced and not altered.
 When auto-tuning is in progress and digital input(DI-1,DI-2) feature is run/stop or
auto/manual, auto-tuning will be automatically ended, if concerned DI is inputted or sensor
break error occurs.
 Auto-tuning is not available in manual control.