Panasonic AKT4112100J Temperature Controller KT4 AKT4112100J Datenbogen
Produktcode
AKT4112100J
16
9. PID auto-tuning of this controller
In order to set each value of P, I, D and ARW automatically, the auto-tuning process should be made
to fluctuate to obtain an optimal value. One of 3 types of fluctuation below is automatically selected.
Sometimes the auto-tuning process will not fluctuate if auto-tuning is performed at or near room
temperature. Therefore auto-tuning might not finish normally.
to fluctuate to obtain an optimal value. One of 3 types of fluctuation below is automatically selected.
Sometimes the auto-tuning process will not fluctuate if auto-tuning is performed at or near room
temperature. Therefore auto-tuning might not finish normally.
(1) In the case of a large difference between the SV and processing temperature (PV) as the
temperature is rising
When AT bias is set to 20 , the AT process will fluctuate at the temperature 20 lower than the SV.
(2) In the case of a stable control
The AT process will fluctuate around the SV.
(3) In the case of a large difference between the SV and processing temperature (PV)
as the temperature is falling.
When AT bias is set to 20 , fluctuation is applied at the temperature 20 higher than the SV.
10. Specifications
10.1 Standard specifications
Mounting
: Flush
Setting
: Input system using membrane sheet key
Display PV display : Red LED 4 digits, character size 10.2 x 4.9 mm (H x W)
SV display
: Green LED 4 digits, character size 8.8 x 4.9 mm (H x W)
Accuracy (Setting and Indication):
Thermocouple
:
Within 0.2% of each input span
1digit, or within
2 (4 ), whichever is greater
However, for R, S input, 0 to 200 (400 ): Within
6 (12 )
B input, 0 to 300 (600 ): Accuracy is not guaranteed
K, J, E, T, N input, less than 0 (32 ): Within
0.4% of input span
1digit
RTD
:
Within
0.1% of each input span
1digit, or
within
1 (2 ), whichever is greater
DC
current
:
Within
0.2% of each input span
1digit
DC
voltage
:
Within
0.2% of each input span
1digit
Input sampling period : 0.25 seconds
Input
Input
Thermocouple : K, J, R, S, B, E, T, N, PL- , C(W/Re5-26) External resistance, 100 or less
(However, for B input: External resistance, 40 or less)
RTD : Pt100, JPt100, 3-wire system
Allowable input lead wire resistance (10 or less per wire)
DC current
: 0 to 20mA DC, 4 to 20mA DC
Input impedance: External shunt resistor (AKT4810) 50
Allowable input current (50mA or less)
Tem p.
Tim e
AT
(1)
(2)
(3)
:
AT
Auto-tuning starting point
SV
Calculating PID constant
PID constant calculated
Controlled by the PID
constant set by auto-tuning
constant set by auto-tuning
(3):
(2):
(1):
SV
Temp.
Time
AT
(1)
(2)
(3)
:
AT
Auto-tuning starting point
(1): Calculating PID constant
(2): PID constant calculated
(3): Controlled by the PID
(2): PID constant calculated
(3): Controlled by the PID
constant set by auto-tuning
(4): AT bias value
(4)
SV
Temp.
Time
AT
(1)
(2)
(3)
(4)
:
AT
Auto-tuning starting point
Calculating PID constant
PID contatnt calculated
Controlled by the PID
constant set by auto-tuning.
AT bias value
constant set by auto-tuning.
AT bias value
(1):
(2):
(3):
(4):
Temperature 20
higher than the SV
Temperature 20
lower than the SV