SAMWONTECH
2nd Edition of TEMP2000M_Series IM : April. 8. 2014 Page 48 / 176
3.6 AUTO TUNING and TUNING POINT
▶
Auto-Tuning is a strong function to establish optimal P.I.D value automatically by calculating the
characteristics of the control system.
▶
While generating ON/OFF control output signal for 2.5 cycles, the controller measures the PV response
of the control system with a limit cycle method and calculate the optimal P.I.D value with the oscillation
data.
▶
Auto-Tuning process can be carried out on FIX / PRORGAM RUN state, and after completion of Auto-
Tuning process, calculated P.I.D value with SP will be automatically stored on P.I.D parameters of
corresponding zone.
▶
It executes sequential Auto Tuning and store to PID sequentially when select “Auto” from Auto Tuning
Parameter.
▶ Auto tuning procedure with a set point.
Parameter
Settings
▶ Operation Type: Fix Operation
▶ Input Sensor: Temperature(K2)
▶ Range: -200.0℃ ~ 1370.0℃
▶ Auto Tuning Point: 0.25% → EUS 0.25% = 3.9℃
▶ Set Point(SP) : 50.0℃
▶ OL : 0.0%
▶ OH : 100.0%
Tuning
Procedure
▶
Auto Tuning Precautions
①
The tuning point does not change even if the SP is changed during auto tuning. When auto tuning
has completed, operation continues again with the changed SP.
②
If ‘S.OPN’ occurs during auto tuning, the process stops. PID stays the same before auto tuning.
③
Auto tuning stops automatically, if the second cycle is operated longer for 27 hours.
④
PID may change during auto tuning, but when the process is finished, the PID will be reset to new
calculated value from auto tuning process.
⑤
If auto tuning is terminated by force, the PID is the same value as it was before auto tuning began.
OH
OL
MV
PV
ON
ON
OFF
OFF
51.5℃
Process of auto tuning
PID Control
ON
48.5℃
SP = 50.0℃
Auto Tuning
Point
Summary of Contents for Temp 2000 M
Page 1: ...Instruction Manual...
