Instruction manual

44
[If P, I, D, ARW values cannot be changed]
• If auto-tuning does not finish in 4 hours after it has started, it will be 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 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 auto-tuning]
Auto-tuning can be performed only during Program control run mode.
Auto-tuning cannot be performed during the Program standby mode or during
any other control actions except PID control.
[Program control run mode]
Press the Key while pressing the key.
The unit enters the PID parameter setting mode,
and AT Perform/Cancel item is indicated.
+
[PID parameter setting mode]
AT Perform/Cancel selection
Press the key.
Press the Key.
The controller reverts to the Program control
run mode, and auto-tuning is performed.
[Program control run mode]
[Indication during AT Perform]
PTN display : Selected program pattern number
PV display : Current actual temperature
STEP display : Current step number
SV display : Current step SV
RUN indicator : Lit during program control run
AT indicator : Flashes during AT Perform.
Other indicators: Lit or unlit according to the
controller status.
PTN PV
Actual temp.
STEP SV
Step SV
PTN PV
STEP SV
PTN PV
STEP SV
PTN PV
Actual temp.
STEP SV
Step SV
PTN PV
Actual temp.
STEP SV
Step SV