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6.2.1 Selection of PID Tune and Operation Form
6.2 Technician Parameters
TUNE SELECTION
By selecting one of the methods below, device can determine the PID
parameters.
Self tune
(Step Response Tuning) operation
Device operates according to the defined PID
parameters
Auto tune
(Limit Cycle Tuning) operation
Auto-Self Tune
Self Tune operation is performed, if the conditions are
realized when power on firstly. In normal operation, it
controls the tune conditions in
selection which
explained below. If any of the conditions is realized, it
performs the
operation.
Auto Tune
Auto Tune
AUTOMATIC TUNE SELECTION
i
Device does not do
(Limit Cycle Tuning) operation
or while
operation runs, this selection is adjusted
and
operation is canceled.
Auto Tune
If
parameter is
or
, when the
conditions for Auto Tune parameter that are explained in
Tune Methods section are realized, it starts to perform
Auto Tune (Limit Cycle Tuning) operation.
By pressing AT button, Automatic Tune can be selected
or
For being able to use AT button, AT (Auto Tune) Button protection parameter
Must be
. (For details, refer to Section 6.2.8 General Parameters)