Contents
xvi Experion Control Builder Components Theory R300.1
Honeywell 5/06
Function .............................................................................................................................373
Configuration example .......................................................................................................376
Configuration considerations..............................................................................................379
Inputs .................................................................................................................................380
Input ranges.......................................................................................................................380
Input descriptors ................................................................................................................380
Initializable outputs ............................................................................................................380
Output ranges and limits ....................................................................................................381
Mode handling ...................................................................................................................382
Timeout monitoring ............................................................................................................382
Timeout processing............................................................................................................382
Bypass processing............................................................................................................. 383
Bad input option .................................................................................................................383
Equations...........................................................................................................................384
Input switching ...................................................................................................................384
Output bias ........................................................................................................................384
Bad CV processing ............................................................................................................385
Control initialization............................................................................................................385
Restart or function block activation ....................................................................................386
Override feedback propagation..........................................................................................386
Recommendations on configuring override strategies .......................................................387
Windup processing ............................................................................................................387
Anti-Reset Windup Status..................................................................................................390
OVRDSEL parameters.......................................................................................................391
PID Block.................................................................................................................392
Description.........................................................................................................................392
Function .............................................................................................................................407
Functional scenario............................................................................................................409
Configuration examples .....................................................................................................411
Operating modes and mode handling ................................................................................414
Required inputs..................................................................................................................415
Input ranges and limits.......................................................................................................415
Initializable outputs ............................................................................................................416
Control initialization............................................................................................................417
Output bias ........................................................................................................................417
Output ranges and limits ....................................................................................................420
Output limit behavior for PID block recovering from Bad Control .......................................420
Direct or reverse control.....................................................................................................421
Set Point Ramping .............................................................................................................422
PV tracking ........................................................................................................................426
PID equations ....................................................................................................................427
Gain options.......................................................................................................................429
Tuning Constant Change Considerations ..........................................................................431
Timeout monitoring ............................................................................................................431
Timeout processing............................................................................................................431
Windup handling ................................................................................................................432
Windup processing ............................................................................................................432