Instructions
9.4 PID basic functions
PID control
Function Manual, 03/2017, A5E35300227-AC
489
Static variables TCONT_CP
Table 9- 22 Static variables TCONT_CP
DEADB_W 44.0 REAL
0.0 A deadband is applied to the control deviation. The "Deadband width"
input determines the size of the deadband.
The valid values depend on the sensors used.
I_ITLVAL 48.0 REAL 0.0 The output of the integrator can be set at the I_ITL_ON input. The ini-
tialization value is applied to the "Initialization value of the I-action"
input. During a restart COM_RST = TRUE, the I-action is set to the
initialization value.
Values from -100 to 100 % are permitted.
LMN_HLM 52.0 REAL 100.0 The output value is always restricted to a high limit and low limit. The
"Manipulated value high limit" input specifies the high limit.
LMN_LLM 56.0 REAL 0.0 The output value is always restricted to a high limit and low limit. The
"Manipulated value low limit" input specifies the low limit.
PV_FAC 60.0 REAL 1.0 The "Process value factor" input is multiplied by the "Process value
I/O". The input is used to scale the process value range.
PV_OFFS 64.0 REAL 0.0 The "Process value offset" input is added to the "Process value I/O".
The input is used to scale the process value range.
LMN_FAC 68.0 REAL 1.0 The "Output value factor" input is multiplied with the output value. The
input is used to scale the output value range.
LMN_OFFS 72.0 REAL 0.0 The "Output value offset" input is added to the output value. The input
is used to scale the output value range.
PER_TM 76.0 REAL 1.0 s The period duration of the pulse width modulation is entered at the
PER_TM parameter. The relationship of the period duration to the sam-
pling time of the pulse shaper determines the accuracy of the pulse
width modulation.
P_B_TM 80.0 REAL 0.02 s You can assign a minimum pulse or break time at the parameter "Mini-
mum pulse/break time". P_B_TM is internally limited to > CYCLE_P.
TUN_DLMN 84.0 REAL 20.0 Process excitation for controller tuning results from a output value step
change at TUN_DLMN.
Values from -100 to 100 % are permitted.
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