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Proportional + Integral + Derivative Enhanced (P_PIDE)
The following table shows the functions of page 3 of the Maintenance tab.
Table 12 - Maintenance Tab Page 3 Description
Function
Action
Security
Configuration Parameters
Deadband
Type the value for the zero-crossing
deadband (in PV engineering units).
When the loop error is less than the
zero-crossing deadband, the loop
output does not change.
IMPORTANT: See the PIDE built-in
instruction online help for more
information.
Configuration
and Tuning
Maintenance
(Code D)
Cfg_DevDB
PV EU Maximum/
Minimum
Type the maximum and minimum
values of the PV range (span) (in PV
engineering units). The maximum
value must be greater than the
minimum.
Configuration
and Tuning
Maintenance
(Code D)
• Cfg_PVEUMin
• Cfg_PVEUMax
Gains: Proportional
This value depends on the setting of
Cfg_Depend.
If Cfg_Depend = 1 (dependent gains,
the default), type the Controller Gain
(unitless). This gain is applied to the
Proportional, Integral, and Derivative
terms.
If Cfg_Depend = 0 (independent
gains), type the Proportional Gain
(unitless). This gain is applied to the
Proportional term only.
A value of zero in either case disables
the Proportional term of the
controller. Negative values are not
valid.
Cfg_PGain
Gains: Integral
This value depends on the setting of
Cfg_Depend.
If Cfg_Depend = 1 (dependent gains,
the default), type the Integral Time
Constant (minutes pre repeat).
If Cfg_Depend = 0 (independent
gains), type the Integral Gain
(1/minutes).
A value of zero in either case disables
the Integral term of the controller.
Negative values are not valid.
Cfg_IGain
Gains: Derivative
This value depends on the setting of
Cfg_Depend.
If Cfg_Depend = 1 (dependent gains,
the default), type the Derivative Time
Constant (minutes).
If Cfg_Depend = 0 (independent
gains), type the Derivative Gain
(minutes).
A value of zero in either case disables
the Derivative term of the controller.
Negative values are not valid.
Cfg_DGain
Rockwell Automation Publication SYSLIB-RM045B-EN-P - August 2014
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