YOKOGAWA UP750, User Manual

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<Toc> <3. Programming>
IM 05E01B02-41E
3.8 Explanation of Program Functions
■
Programming
You can create programs using either method 1 or 2 described below.
The controller is factory-set to “method 1.” To create programs using method 2, change the
setpoint of the SEG.T (Segment Setting Method) setup parameter to “1.”
Before you begin programming, determine whether your programs are created using the
time unit of “hour and minute” or “minute and second.” The controller is factory-set to the
“hour and minute” time unit. To create programs using the “minute and second” time unit,
change the setpoint of the TMU (Program Time Unit) setup parameter to “mm:ss.”
<Controller Settings>
Setpoint of SEG.T (Segment Setting Method) Setup Parameter
Time setting (method 1) 0 (factory-set default)
Ramp setting (method 2) 1
Choose the desired method and unit from the two programming methods and time unit
options discussed above. Then, create programs according to the chosen options.
1. Creating programs by setting final target setpoint and time unit
As shown in the figure below, this method creates programs by setting a segment time and
a final target setpoint on a segment-by-segment basis.
Final target
setpoint
Time
Setpoint
Final target setpoint set for
segment immediately preceding
or the starting target setpoint
if this is the point of starting
program operation
Segment time
This single definite line is
referred to as a segment.
2. Creating programs by setting final target setpoint and ramp
As shown in the figure below, this method creates programs by setting a final target
setpoint and a ramp grade on a segment-by-segment basis.
Define the ramp grade as the amount of change in the setpoint per hour or per minute.
Final target
setpoint
Time
Setpoint
Final target setpoint set for
segment immediately preceding
or the starting target setpoint
if this is the point of starting
program operation
Ramp
grade
Define the ramp grade as the
amount of change in the
setpoint per hour or per minute.
1st Edition : May 31,2000-00