Omron E5AC-T User Manual page 170

Heating/Cooling PID Control
If heating/cooling PID control is used, you can set PID control separately for heating and cooling.
The PID constants for both heating and cooling can be automatically set according to the cooling
control characteristics by setting the Heating/Cooling Tuning Method parameter and then performing
autotuning (AT).
Parameter
Heating/Cooling Tuning Method
Parameter
Proportional Band
(Cooling)
Integral Time
(Cooling)*
Derivative Time
(Cooling)*
* The unit is determined by the setting of the Integral/Derivative Time Unit parameter. The Proportional Band
(Cooling), Integral Time (Cooling), and Derivative Time (Cooling) parameters are initialized if the
Integral/Derivative Time Unit parameter is changed.
Air Cooling/Water Cooling Tuning
Control that is suitable for an application that does not have linear cooling characteristics (such as
plastic molding machines) is performed. The response is fast and the response characteristics are
stable.
Linear Tuning
Control that is suitable for an application that has linear cooling characteristics is performed.
Water cooling
100
0
MV (cooling) (%)
E5@C-T Digital Temperature Controllers User's Manual (H185)
0: Same as heating control
1: Linear
2: Air cooling
3: Water cooling
Setting range
Temperature input
Analog input
Integral/Derivative
Time Unit of 1 s
Integral/Derivative
Time Unit of 0.1 s
Integral/Derivative
Time Unit of 1 s
Integral/Derivative
Time Unit of 0.1 s
Air cooling
100
Cooling Characteristics
Setting range
Unit
°C or °F
0.1 to 999.9
%FS
0 to 9999 Seconds
0.0 to 999.9 Seconds
0 to 9999 Seconds
0.0 to 999.9 Seconds
Linear
5 Advanced Operations
Default Level
Advanced Function
0
Setting Level
Default Level
8.0
10.0
233
Adjustment
233.0
Level
40
40.0
5
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