
APPENDIX A - FUNCTION BLOCK DESCRIPTIONS UM344-2
September 1995
Equations
O = GE + R
MR
AUTO R =
TIs + 1
MANUAL R = F - GE ∴ O = F
IF MRT = YES MR = F
ID Controller
Controller Status ........................................................... On/Off
Controller Type....................................................... PID/PD/ID
Action...............................................................Reverse/Direct
Proportional Gain (PID & PD) ...............................0.01 to 100.0
Time-Integral.........................................0.01 to 1000 min/repeat
Time-Derivative.............................................. 0.01 to 100.0 min
Derivative Gain......................................................1.00 to 30.00
Manual Reset (PD only).......................................0.0 to 100.0%
Manual Reset Tracking PD only)...................................No/Yes
The ID controller is an integral only controller which uses external feedback to establish integral action.
If the derivative time TD is set to 0.00, the derivative section is eliminated.
Block Diagram, PD Controller
PV
TDs
TD
DG
s + 1
+
+
+
+
+ / -
+ / -
SP
PG
GE
R
s + 1TI
1
Output
F
MR
X02879S0
Output
SP
PV
PID
PD
ID
ID Controller
Komentáře k této Příručce