SAMWONTECH
4th Edition of TEMI880 IM : Jan. 29. 2007 Page 66 / 119
▶ Auto tuning is the function that controller is set up most suitable PID number automatically.
▶ Auto tuning is calculated with P, I, D as a cycle and amplitude.
▶ Auto tuning is possible at Fix RUN only and set P, I, D vaule automatically.
▶ Auto Tuning Action
Setting
▶ OPER. MODE = FIX RUN
▶ INPUT = TEMP(PT_1)
▶ RANGE = -50.00℃ ~ 150.00℃
▶ TEMP AUTO TUING POINT = 0.10%
→ EUS 0.10% = 0.2℃
▶ SP = 50.0℃
▶ OL = 0.0%
▶ OH = 100.0%
Auto Tuning
Action
▶ The caution about Auto Tuning.
→ Though SP has changed at Auto Tuning, Tuning Point is not changed. And changed SP start
control as TSP(Target SP) after bring Auto Tuning to an end.
→ If Burn Out is occurred at Auto Tuning, Auto Tuning is stopped.
Keep up previous P, I, D setting value.
→ If two cycle time is over 24 hours, Auto Tuning is stopped.
→ Though you can change P, I, D setting value at Auto Tuning, its value is changed
re-calculable value at Auto Tuning is stopped.
→ If Auto Tuning is stopped by compulsion, P,I,D value keep up previous setting value.
☞ The order of the Auto Tuning
○
1 Auto Tuning of the temperature side.
○
2 Auto Tuning of the humidity side.
AUTO TUNING and TUNING POINT
OH
OL
MV
PV
ON
ON
OFF
OFF
50.2℃
Auto Tuning
PID control
ON
49.8℃
SP = 50.0℃
AUTO TUNING
POINT
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