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6. PID selection function
When switching the normal and reverse operation by using the PID selec-
Point
tion function, be sure to turn off the system power beforehand for safety
reasons (Do not switch normal and reverse operation during control).
The SV selection function can record and switch up to eight sets of PID parameters from the
palette menu settings.
It is effective when the control equipment changes the target often and must frequently change
the PID parameters.
Use the following steps to save PID information.
Display the palette menu ("
PLT Ch 3
1
Display proportional bandwidth setting 1 ("
2
Set "i1" and "d1" in the same way.
3
Set the following parameters as necessary: ON/OFF control hysteresis ("
ing proportional band ("
CoL1
"), dead band ("
("
Ar1
"), and normal/reverse setting ("
Press the
key to set the value.
4
The PID parameter selection (P , i, d, normal and reverse settings) can be changed by the
same four methods as the SV selection function.
●
"
"
Switch Using Parameter
PLn1
Display the operation menu ("
1
Display the selected PID number ("
2
Press the
key to set the value.
3
●
Switch Using the User Key
Display the palette menu ("
PLT Ch 3
1
Display max selected PID number ("
2
it with the user key.
Display the user key function setting ("
3
function.
On the PV/SV display, pressing the user key will switch you from the currently
4
selected PID to the next PID.
When the user key function code is 27 (SV No.+1, PID No.+1 (send))
Point
and the initial PID No. and SV No. are different, the first time you press
the user key, PID No. will become the same as SV No.
Also the SVMX parameter value becomes the maximum selectable
number for PID No. and SV No.
●
Switch Using DI Function
Display the operation menu ("
1
Display the selected PID number ("
2
Display the DI function setting ("
3
function.
●
Switch Using Parameter "
PLn1
" via the Communication Channel
In the communication, overwrite the set value for the selected PID number
1
("
PLn1
").
7. Startup mode function
The startup mode specification function sets the controller to start up in either auto mode ,
manual mode , remote mode or standby mode.
It is used when you want to start up in manual mode.
Use the following steps to set this function.
Display the system menu ("
SYS [h 7
1
Display the startup mode ("
Stmd
2
Choose from auto or manual.
Press the
key to set the value.
3
After changing the above setting, restarting the controller will start it in the selected
mode.
When starting up in manual, the MV becomes 0%.
Point
8. User function key
Pressing the
key in the monitor screen display, channel screen display, or parameter screen display
will immediately return you to the PV/SV display, regardless of assigned function.
").
P1
") and set P1.
db1
"), balance ("
bAL1
"), anti-reset windup
rEv1
").
oPE Ch1
").
PLn1
") and choose the PID No.
").
") and set the PID number by choosing
PL1M
UKEy
") and set it to PID selection
oPE Ch 1
").
PLn1
") and choose "di".
di1
" to "
di5
") and set the PID selection
").
") and choose the operational mode.
Holding the
manual mode) will run the assigned function.The standard factory default for the
switchover between auto and manual modes.
Refer to
For functions that can be assigned, see "6-7 System (Ch7)" (page 8).
Use the following steps to set this function.
Display the system menu ("
1
Display the assign user key specification ("
2
Press the
3
9. bAL and Ar functions
●
The anti-reset windup function ("
hyS1
"), cool-
that is centered around SV.
Running auto-tuning will set the optimum values for P, i, and d parameters, as well as Ar.
●
The output convergence value function ("
the PID computed MV plus the bAL offset.
(The factory setting of bAL is 0% for single output, 50% for dual output.)
Point
10. MV limit function
The MV limit function allows you to choose whether to limit the MV or let it pass through maxi-
mum and minimum MV.
output value
(after limit)
103%
PHC
limit
PLC
—3%
8
Setting the Temperature Controller
8-1
Set the type and the range for input sensor.
Input can be set in the setup menu ("
For more on input types, input scaling, decimal point location, and input codes, see "10 Input
Range and Codes (standard renge)". (page 18)
1.
Choose an input type ("
Check the type of the thermocouple or resistance bulb which is used.
2.
Set the PV scaling (input range) ("
Set Pvb to the lower limit of the temperature range and PvF to the upper limit. It is recom-
mended to set the values at the standard range, even though they can be set at values
beyond of it.
There is no standard range for DC voltage or DC current input. (-1999 to 9999, lower
limit<upper limit)
3.
Set the decimal point location ("
Sets whether or not to display digits after the decimal point. Two digits can also be dis-
played after the decimal point when using 1 to 5V DC, and 4 to 20mA DC.
Point
– 17 –
key down for about a second in PV/SV display or PV/MV display (only during
SYS [h 7
").
key to set the value.
Ar
") cuts integration that falls outside of the Ar set range
}
cuts integration
PV
}
AR value
includes integration
SV
AR value
}
cuts integration
PV
bAL
") outputs to PV and SV a calculated result of
MV
100%
bAL=0
50%
40%
bAL=40%
proportional
SV
bandwidth
Ar1 to Ar7 and bAL1 to bAL7 have the same function as in each PID
group.
PCUT
PHC1
"0"
103%
pass
"1"
103%
limit
"2"
limit
"3"
limit
"4"
103%
"5"
103%
pass
"6"
limit
PHC
output value
"7"
limit
PLC
(before limit)
"8"
103%
"9"
103%
"10"
limit
"11"
limit
"12"
103%
"13"
103%
"14"
limit
"15"
limit
Input Setting
SET [h6
").
PVt
")
PVb
"/"
PvF
")
Pvd
")
PV scaling and decimal point location can be used with the factory
settings.
key is
UtEy
") and choose the function.
PV
MV1
MV2
PLC1
PHC2
PLC2
-3%
103%
-3%
limit
103%
-3%
-3%
103%
-3%
limit
103%
-3%
-3%
103%
limit
limit
103%
limit
103%
limit
-3%
limit
103%
limit
-3%
limit
-3%
limit
limit
-3%
-3%
limit
-3%
limit
limit
-3%
-3%
limit
limit
limit
limit
limit
-3%
limit
limit
limit
limit
limit
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