Omron E5*C Series User Manual page 171

 RT Features
• Even when hunting occurs for PID constants when AT or ST is executed in normal mode, it is less
likely to occur when AT or ST is executed in RT mode.
Temperature
Set value
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
Set value
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.
This procedure selects RT mode.
Operating Procedure
1
Press the M Key several times in the Advanced Function
Setting Level to display rt (RT: robust tuning).
2
Press the U or D Key to select on (RT ON).
The default is off.
E5@C Digital Temperature Controllers User's Manual (H174)
Temperature
Much hunting occurs.
Set value
Time
Start of control
Temperature
Set value
Time
Start of control
Hunting is reduced.
Time
Time
Advanced Function Setting
Level
4 Basic Operation
rt
RT
off
rt
on
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