How does a pressure transmitter control the frequency of an inverter based on pressure?
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How does a pressure transmitter control the frequency of an inverter, and how is programming carried out in Zhejiang University’s ZONKON DCS system?
It’s just a simple PID single-loop control.
It’s very simple: the pressure transmitter provides an electrical current signal, and the AO card outputs an electrical current signal to control the frequency converter. As mentioned earlier, a single-loop system is sufficient. In the control module, simply change the tag numbers; it’s necessary to configure one analog AI point and one AO point Ask if you have any questions
There should also be blocks for PID adjustment on the screen, to facilitate entering PID parameters and setting pressure values, etc