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Auto-tuning
Autotuning function
This is the function implemented by the controller itself to automatically
perform ON/OFF control, identify the process, and determine control
constants (P, I, D, Cool, Ar).
Operating procedure
( Autotuning Command)
Setting
(Standard
type)
(Low PV
type)
Supplementary descriptions
1. There are two types of auto-tuning (AT):
over-shoot) and
Type
the set point value (SV) (overshoot) during autotuning. Use this type
where overshoot is permitted.
Type
centering upon the value 10% (/full-scale) lower than the set point
value (SV). Use this type where overshoot is to be suppressed.
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Parameter to be used
Operation
Provides normal control.
Perform auto-tuning while
targeting the present [set
point value (SV)].
Performs auto-tuning while
targeting the present [set
point value (SV) - 10%FS].
Low PV type (suppressing overshoot).
is the system in which the measured value (PV) exceeds
is the system in which ON-OFF control is provided by
(Autotuning command) Setting
or
command starts autotuning (during
autotuning,
value alternate in display on the run
screen). Autotuning terminates
automatically.
Standard type (including
47
in the autotuning
and the set
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