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[If P, I, D, ARW values cannot be changed]
• If PID auto-tuning does not finish in 4 hours after it starts, PID auto-tuning is
cancelled automatically, and P, I, D, ARW values return to the value set before the
auto-tuning was performed. In this case, set P, I, D, ARW values manually.
• If PID auto-tuning is cancelled during the process, P, I, D, ARW values return to the
value set before the auto-tuning was performed.
[How to perform PID auto-tuning]
PID auto-tuning can be performed only during program control run mode.
PID auto-tuning cannot be performed during the program standby mode or during
any other control actions except for PID action.
[Program control run mode]
Press the key while holding down
the key.
PID parameter setting mode is selected and
+ Auto-tuning Perform/Cancel item is selected.
[PID parameter setting mode]
AT Perform/Cancel selection
Press the key.
Press the key.
The controller reverts to the Program control
run mode, and PID auto-tuning is performed.
[Program control run mode]
[Indication during auto-tuning Perform]
PTN display : Selected program pattern number
PV display : Current actual temperature
STEP display : Current step number
SV display : Current step temperature
RUN indicator : Lit during program control run
AT indicator : Blinks during auto-tuning Perform
Other indicators : Lit or unlit according to the
controller status
PTN
PV
Actual temp.
STEP
SV
Step SV
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