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What does it mean to invert in a central control DCS?

2020-12-03View Original

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The dryer tower cools the material level in the bin; click on the detailed panel – data conversion is in progress. What does the \"invert\" option for the reverse range setting mean? The system is for the nylon process
Reply #22020-12-03
In simple terms, it involves converting a 4–20mA signal into a 20–4mA signal for processing
Reply #32020-12-04
It normally displays 1 or 0, which is simply the two digits reversed
Reply #42020-12-04
Analog output can have a reverse output feature, meaning that it outputs a value corresponding to 0-100% opening; the actual output range is 20-4 mA. This is used with air-operated valves in order to match the opening degree indicated by the DCS with the actual opening degree on site. Inverting digital signals means that in logical operations, 0 is inverted to become 1, and 1 is inverted to become 0, thereby fulfilling the requirements of your logic.

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