Graphic T e x t
List printing : You can check and keep an im portant data
which is set in each parameter.
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3) RAMP FUNCTION
It is a rate of set value to arrive to set value
according to setting temperature and time.
ex) Present temp 20℃, set value 100℃, 2 0℃ per min.
1) Initial uprising set value(up,rt) : 100℃
2) Unit time : Minute min)
1 0 0
℃
시간/분( t )
1 2 3 4
8 0
6 0
4 0
현재온도 20 ℃
23
FUNCTION
1 1
4) ZOOM FUNCTION
When you choose Zoom function ON in Group control,
you can see a temperature with zooming as soon as you
select ON. The tenperature will be in center of paper.
ex) Scale : 0.0 ~ 100.0 ℃
Zoom ON : ZOOM IN 》PV. 25.5℃ at the center
1) AUTO TUNING
a) STANDARD TYPE AUTO-TUNING
Temperature
Set point
value(SV)
Process
value(PV)
Control
output
O N O N O N
Time(t)
Time(t)
PID control
ON/OFF operation
AT started
AT finished
AT finished
Under AT
O F F O F F
b) LOW PV TYPE AUTO-TUNING
The Auto tuning function automatically measures,
computes and sets the optimum Proportional band(P),
Integral time(I), and Deri-vative time(D). When Auto-tuning,
the controller performs ON/OFF
control and determine proper P.I and D. (Limit cycle type)
RT9-1 series controller have two types of Auto-tuning as
b e l o w .
Standard type auto-tuning :
This type is based on set point value (SV)
Low PV type auto-tuning :
This type is based on the value 10% lower than
the set point value (SV)
2) Auto-tuning in Zone PID
Zone PID automatically sets PID group in accordance
with a measured value. In Zone PID, auto-tuning sets
the proper PID value by recognizing a mid-value of
reference point as set point value.
Temperature
Set point
value(SV)
Process
value(PV)
Control
output
O N O N O N
Time(t)
S V - 1 0 %
Time(t)
PID control
ON/OFF operation
AT started
Under AT
O F F O F F
max. value of
measuriag
range (SV)
Reference
point 2
Reference
point 1
min. value of measuring range
PID 1
PID 2
PID 3
T i me( t )
5) F U Z ZY C O N T R O L
Fuzzy control eliminates overshoot using Fuzzy Logic.
Employing Fuzzy control and Auto-tuning, the
controller effectively control as below.
When the controller starts control at the position
which has a big gap between SV and PV.
When reducing warming up time
When the load is fluctuating extreamly
When changing a set point value frequently
Target set
value
Set point value
Subsidary target value
measured
value
Fuzzy Logic start
Time(t)
Control output is set in high and low limit as operating range.
Output limit is -5~105% of output.
6) OUTPUT LIMIT
2 0 m A
Output signal
1 2 m A
4 m A
O L - H
Output limit (%)
O L - L setting range
1 0 5 %5 0 %- 5 %
When A/D error or input disconnection occur in auto
mode, PID output is cut and than Pre-set output is
operated. (PO Output)
7) Emergency output
Hold function
Hold function : None
(Picture 1)
8) HOLD FUNCTION
Without hold function, Low limit alarm will be ON
when increasing temperature. (Picture 1)
SV
(low limit alarm)
Power ON
Alarm output
ON O F F O N O F F
P V
(Picture 2)
S V
(low limit alarm)
Power ON
Alarm output O F F O F F O N O F F
P V
9) RECORDER
① Run/Stop : You can record or stop when you need.
② Feed : Paper be transmitted forcedly.
③ Graphic or Text selectable
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