YOKOGAWA UP150 - Starting with Ramp Settings

IM 05C01F12-41E
23
■ Conditions for Starting Program
1.Letting the controller run from a starting target setpoint
A starting target setpoint refers to a setpoint from which program operation begins. The controller operates in such
a manner that the setpoint changes to the target setpoint over the segment time set for segment 1, irrespective of
what the PV value is.
Controller Settings
Set the STC (Start Code) program parameter to “0”.
Segment 1 Segment 2
Program setpoint
Time
PV
Segment time
Target setpoint
Starting target setpoint
Start of program operation
2.Letting the controller start from the current PV and run according to time settings defined for
segment 1
Controller Settings
Set the STC (Start Code) program parameter to “2”.
Segment
1
Segment
2
Segment
3
Segment
4
Segment
5
Program setpoint
Target setpoint
e
d
b
a
Time
PV
c
Start
of program operation
Controller BehaviorStarting Point of Operation
Begins to run from point a according to the time setting defined for segment 1.
Begins to run from point b according to the time setting defined for segment 1.
Begins to run from point c according to the time setting defined for segment 1.
Begins to run from point d according to the time setting defined for segment 1.
Begins to run from point e according to the time setting defined for segment 1.
a
b
c
d
e