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When is the ON/OFF control action necessary instead of the PID action?

April 26, 2017Action CONTROL necessary PID

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When is the ON/OFF control action necessary instead of the PID action?

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Due to the minor frequency of the actuator activation, the ON/OFF action is preferred in heating or cooling systems that use gas or liquids such as gas heaters or refrigerator compressors. The PID action is used only with the more rapid and precise actuators, such as electric resistances.