E5CNH E5AN-H E5EN-H Digital Controllers User's Manual - OMRON

Determining PID Constants (AT, ST, Manual Setup) Section 3-8
Temperature Temperature
Much hunting occurs.
Set value Set value
Operating Procedure This procedure selects RT mode.
Hunting is reduced.
Time Time
Start of control Start of control
When the temperature (PV) falls short of the set point for the PID constants
when using AT or ST in normal mode, executing AT or ST in RT
mode tends to improve performance.
Temperature Temperature
Set value Set value
Time Time
Start of control Start of control
When the manipulated variable (MV) is saturated, the amount of overshooting
may be somewhat higher in comparison to PID control based on
AT or ST in normal mode.
Operation Level 1. Press the O Key for at least three seconds to move from the operation
C
PV/SP
25.0
100.0
level to the initial setting level.
Initial Setting Level 2. Select the Move to Advanced Function Setting Level parameter by press-
Input Type
ing the M Key.
in-t 5
Initial Setting Level 3. Use the D Key to enter “−169” (the password).
amov 0
Move to Advanced
Function
Setting Level
Advanced Function Setting Level It is possible to move to the advanced function setting level by pressing
Parameter
Initialization
the M Key or leaving the setting for at least two seconds.
init
off
Advanced Function Setting Level 4. Press the M Key to select rt.
rt
off
RT
65