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5 Advanced Operations
E5@C Digital Temperature Controllers User’s Manual (H174)
5-3 Executing Heating/Cooling Control (Not Supported for Position-proportional
Models.)
5
5-3-1 Heating/Cooling Control
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).
* 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.
Parameter Setting range Default Level
Heating/Cooling Tuning Method
0: Same as heating control
0
Advanced Function
Setting Level
1: Linear
2: Air cooling
3: Water cooling
Parameter Setting range Unit Default Level
Proportional Band
(Cooling)
Temperature input
0.1 to 999.9
°C or °F8.0
Adjustment
Level
Analog input %FS 10.0
Integral Time
(Cooling)*
Integral/Derivative
Time Unit of 1 s
0 to 9999 Seconds 233
Integral/Derivative
Time Unit of 0.1 s
0.0 to 999.9 Seconds 233.0
Derivative Time
(Cooling)*
Integral/Derivative
Time Unit of 1 s
0 to 9999 Seconds 40
Integral/Derivative
Time Unit of 0.1 s
0.0 to 999.9 Seconds 40.0
Cooling Characteristics
Air cooling
Water cooling
Linear
100
100
0
MV (cooling) (%)
Cooling capacity (%)
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