Fuji Electric PXF4 - Page 14

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Caution
The ramp soak function ( page 15), and SV selection function ( page 17) cannot
be combined.
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ON/OFF (2-position)
control
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and SV Can build a control system out of simple elements such as SSR.
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7-1 (page 14)
PID Controls PID calculation and controls proceed according to the previously set PID
parameters.
PID parameters can be set manually or through auto- tuning (AT).
It is the most basic control in this equipment.
7-2 (page 14)
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changed, even if you may take a long time to reach the target value.
7-3 (page 14)
Self-tuning Control Automatically calculating PID control according to the control target or SV
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7-4 (page 14)
PID2 Control ,QFDVHZKLFKWKHSRZHUVXSSO\RIWKHFRQWUROWDUJHWJRHV21ĺ2))ĺ
ON, this PID2 control can suppress the amount of overshoot during control
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7-5 (page 15)
2-degrees-of-freedom
control
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7-6 (page 15)
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relationship of PV and SV.The output hysteresis can be set under the parameter "
" (" ").
Reverse Operation (heat control)
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to the control target.
Parameter Set value
"
"
oNoF
"
"
rv--
" "
arbitrary (factory setting: 1 °C)
Normal Operation (cooling control)
Method used to control the cooling machine
Parameter Set value
" "
oNoF
" "
no--
"
"
arbitrary (factory setting: 1 °C)
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Display the system menu (" ").
Display the control parameter ("
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Press the
key to set the value.
Refer to
For more details on auto-tuning, see "7-7 Auto-tuning" (page 15)
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that the control target or set value (SV) changes.
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tuning cannot be run due to frequent changes in the control target conditions.
Point
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control.
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Conditions to halt self-tuning
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soak function, remote SV function, or ramp SV.)
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Setting self-tuning
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Display the system menu (" ").
Display the controller parameter (" ") and choose self-tuning (" ").
Press the
key to set the value.
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dead time
t
process value
tuning
SV
lag time
Point
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") once before changing back to
self-tuning.
1
2
3
1
2
3
4
5
6
PV
ON
OFF
control output
t
SV
process value
PV<SV
PV>SV
HYS
PV<SV
PV>SV
PV
ON
OFF
control output
t
SV
process value
HYS
Point
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key is pressed.
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output.
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PID controls run as long as the parameter is set to "   (" "). The PID controls
calculate PID based on the set values for parameters "
", " ", " ", and " ", and output the calculated
result (-5% to 105%).
Each parameter can be set either by manually tuning the values or by running auto-tuning (AT) to
automatically set the values.
Refer to
For more details on auto-tuning, see "7-7 Auto-tuning" (page 15)
Display the system menu (" ").
Display the control parameter (" ") and choose PID controls (" ").
Press the
key to set the value.
1
2
3
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