Auto-Tuning Function - FE PXR4 Operation Manual

Auto-tuning function (Settings: 0/1/2)
[Description]
[Note]
If the controller is powered off during auto-tuning, this
makes the auto-tuning ineffective with each parameter
of , , and
operation, set
• To suspend the auto-tuning, set
the auto-tuning cancel with each parameter of , , and
unchanged.
• Once the parameters of , , and
by the auto-tuning, those parameters are stored in the
controller even after it is powered off. Therefore, it is not
necessary to execute the auto-tuning again.
• By setting to "1" or "2" , the auto-tuning operation
starts, and at the end of the tuning,
automatically to
• After the auto-tuning operation, the controller starts to
operate at the automatically set values of , , and .
• A decimal point at the right end of the SV display flashes
during auto-tuning.
[Setting example] Setting the auto-tuning operation to 1
Display
1.
2.
3.
4.
5.
6.
7.
1.800.561.8187
20
unchanged. To start the auto-tuning
to "1" or "2" again.
to "0". This makes
are set automatically
will be displayed
.
Press and hold the key for one second.
SEL
will be displayed on the PV display.
Press the key to display
Press the SEL key once.
The current setting ( ) flashes on the SV display.
Press the or keys to display .
Press the SEL key once. will stop flashing and the auto-tuning will start. During auto-tuning,
a decimal point at the right end of the SV display flashes.
When the auto-tuning finishes properly, a decimal point stops flashing, and the set values of , ,
and parameters change. When the auto-tuning finishes abnormally, a decimal point stops flash-
ing, but the set values of , , and
If you want to display the operation status, press and hold the
www.
• There are two codes for AT:
Setting code [1]: SV standard type
Performs the auto-tuning based on the SV.
Setting code [2]: Low PV type
Performs the auto-tuning based on the
SV-10%FS.
[Note]
Since ON/OFF control is performed during auto-tun-
ing, overshoot against the SV may occur. To reduce
the overshoot, execute the auto-tuning operation with
the setting code [2] (Low PV) selected.
• The auto-tuning can be executed both just after power-on
and in a control or stable status.
Related parameters:
(page 24)
(page 25)
(page 26)
(page 30)
(page 28)
Operating procedure
.
parameters remain unchanged.
.com
SEL key for two seconds.
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