Omron E5CN User Manual page 80

Determining PID Constants (AT, ST, Manual Setup)
Temperature
Set value
Start of control
Operating Procedure
Operation Level
PV/SP
C
25
100
Initial Setting Level
Input Type
in-t
5
Initial Setting Level
Move to Ad-
amov
vanced Function
Setting Level
0
Advanced Function Setting Level
Parameter
init
Initialization
off
Advanced Function Setting Level
RT
rt
off
rt
on
Initial Setting Level
Input Type
in-t
5
• When the temperature (PV) falls short of the set point for the PID con-
stants when using AT or ST in normal mode, executing AT or ST in RT
mode tends to improve performance.
Time
• When the manipulated variable (MV) is saturated, the amount of over-
shooting may be somewhat higher in comparison to PID control based on
AT or ST in normal mode.
This procedure selects RT mode.
1. Press the O Key for at least three seconds to move from the operation
level to the initial setting level.
2. Select the Move to Advanced Function Setting Level parameter by press-
ing the M Key.
3. Use the D Key to enter " − 169" (the password).
It is possible to move to the advanced function setting level by pressing
the M Key or leaving the setting for at least two seconds.
4. Press the M Key to select rt.
5. Press the U Key to select on. off is the default.
6. To return to the initial setting level, press the O Key for at least one sec-
ond.
Temperature
Set value
Start of control
Section 3-8
Time
55