AH500 Module Manual Cooler: The setting value is 200 (20°C), and KP is 100 (10°C). The relation between the temperature and the operation amount is shown below. Operation amount 100% Cooler 0% Temperature 30 ℃ Proportional band 20 ℃ Integral action: If temperature is controlled by a pure proportional action, there is difference between the temperature controlled and a setting value. Therefore, if an integral action is used with a proportional action, difference decreases as time goes by, and the temperature controlled is the same as the setting value. Derivative action:
With regard to violent environmental change, a derivative action provides more operation amount to make temperature return to its original controlled state. 5-10