Siemens Simatic S7-1500 - Page 419

Instructions
9.3 PID_Temp
PID control
Function Manual, 03/2017, A5E35300227-AC
419
Tag
Data type
Default
Description
PIDSelfTune.TIR.TuneRule-
Heat
INT 0 Method for parameter calculation during fine tuning for
heating
Options are:
• TIR.TuneRuleHeat = 0: PID automatic
• TIR.TuneRuleHeat = 1: PID fast (faster control re-
sponse with higher amplitudes of the output value than
with TIR.TuneRuleHeat = 2)
• TIR.TuneRuleHeat = 2: PID slow (slower control re-
sponse with lower amplitudes of the output value than
with TIR.TuneRuleHeat = 1)
• TIR.TuneRuleHeat = 3: ZN PID
• TIR.TuneRuleHeat = 4: ZN PI
• TIR.TuneRuleHeat = 5: ZN P
(ZN=Ziegler-Nichols)
To be able to repeat the calculation of the PID parameters
for heating with TIR.CalculateParamsHeat and
TIR.TuneRuleHeat = 0, 1 or 2, the previous fine tuning
also has to have been executed with TIR.TuneRuleHeat =
0, 1 or 2. If this is not the case, TIR.TuneRuleHeat = 3 is
used.
The recalculation of the PID parameters for heating with
TIR.CalculateParamsHeat and TIR.TuneRuleHeat = 3, 4
or 5 is always possible.