YOKOGAWA UT55A - Page 230

8-101
IM 05P01C31-01EN
Control Functions
Effects of Super2
SUPER2 = ON
SUPER2 = ON
Hunting
Hunting
PV
PV
SP PV
Load change
Temperature change
PID parameters are set at this condition.
Setting Details
Parameter
symbol
Name
Display
level
Setting range Menusymbol
SC Super function EASY
OFF: Disable
1: Overshoot suppressing function
(normal mode)
2: Hunting suppressing function
(stable mode)
3: Hunting suppressing function
(response mode)
4: Overshoot suppressing function
(strong suppressing mode).
TUNE
Note1: In Cascade control, the LP2 lamp is lit while the Loop-2 parameter is displayed.
SetSC=2whentherearealotofdisturbances,andmuchhuntingoccurs.
SetSC=3whenSPischangedfrequently.Huntingsuppressingeffectissmallerthanthat
ofSC=2,however,responsivenessisgood.
Do not use the Super function for the Sample PI control.
The Super function does not work in direct action.
8
8.6SuppressingHunting(Super2Function)