CHAPTER 5 PARAMETERS
E5CK
5–18
AT Execute/Cancel
Conditions of Use
The controller must be in operation, and
control must be advanced PID control.
Ă• Selects the limit cycle of MV change width (40% or 100%) for execution. After AT
execution, the PID" and the LBA detection time" (Loop Break Alarm) parameters
are automatically set.
Ă• During heating and cooling control, only 100%AT can be executed.
Ă• To execute 40%AT, select [
], and to execute 100%AT, select [ ]. During execuĆ
tion of autoĆtuning, the AT LED flashes. However, note that during heating and coolĆ
ing control, [
] is not displayed.
Ă• When AT execution ends, the parameter setting automatically returns to [
].
ĂRelated description
3.8 Adjusting Control Operation/AT (page 3Ć25)
ĂRelated parameters
Proportional band" Integral time" Derivative time" (level 1 mode)
LBA detection mode" (level 2 mode)
Proportional band
Integral time
Derivative time
Conditions of Use
The control must be advanced PID con-
trol.
Ă• Sets the PID parameters. Note that PID is automatically set when AT is executed.
Parameter Setting Range
Unit Default
Proportional band 0.1 to 999.9 %FS 10.0
Integral time 0 to 3999 *1 Second 233
Derivative time 0 to 39999 Second 40
ĂRelated parameter
AT Execute/Cancel" (level 1 mode)
Level 1 Mode
Function
Example
of use
See
Function
Setting
See
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