29
Cautions in operation
3-3. Auto tuning and tuning point
● The segment is held during program operation and the segment is processed when the auto tuning is terminated.
● Auto tuning is a function to set the optimal PID integer automatically by measuring and calculating the object of control with controller.
● The controller generates the ON/OFF control output during “2.5 periods” during auto tuning and it calculates the P, I, D data automatically
based on the period and oscillation magnitude using the limit cycle to the object to be controlled.
● The Auto-Tuning is available in program.stationary operation. The PID data calculated from the set value located PID group is saved automatically through Auto-Tuning from the currently set value.
References
▶
An example of auto tuning depending on the set value.
- Operation method : Stationary operation/Sensor input: Temperature(PT_1)
- Temperature auto tuning point : 0.10% → EUS 0.10% = 0.2℃
- Range : -50.00℃ ~ 150.00℃ - Set value (SP) : 50.0℃ - Output lower limit (OL) : 0.0% / Output upper limit (OH) : 100.0%
: Auto tuning point
50.2℃
49.8℃
49.8℃
Under tuning
PD control
Measuring data
(PV)
ON
ON
ON
OFF
OFF
SP =
50.0℃
OH
Control output
data (MV)
OL
50.2℃
Auto tuning operation
● Any change in set value (SP) in auto tuning does not change the tuning
point. And the tuning is started with changed set value (SP) for target
set value (TSP) after auto tuning termination.
● The auto tuning is stopped in case of “Sensor short” in input during
auto tuning. At this time, the PID data is kept with the previous set value.
● When auto tuning is processed beyond 27 hours, the auto tuning
is stopped.
● The PID set value can be changed during auto tuning, but the
obtained PID data from calculating in auto tuning termination is reset
with the obtained PID data.
● The PID set value is maintained with previous set value when the
auto tuning is forcibly terminated.
● For better Auto-Tuning results, need to wait until stabilization by
set value(temperature), then Autotuning the temperature first.
And after Autotuning the humidity, will get better P, I and D value(data)
03. Operation state screen setting
Содержание TEMI1000 Series
Страница 1: ......
Страница 10: ...Part 02 Main screen 9...
Страница 37: ...Part 05 Appointed operation setting 36...
Страница 69: ...Part 08 Screen display setting 8 1 Setting display setting 69 8 2 DI error creation history view 71...
Страница 75: ...Part 09 Communication error 74...
Страница 78: ...MEMO...
Страница 79: ......
Страница 80: ......