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Transition between air-open valves and air-close valves during the configuration of the ABB DCS system MACS 5

2019-09-16View Original

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During the configuration of the Allen-Bradley DCS system MACS 5, how can control valves be changed from air-operated open valves with a range of 0% (4 mA) to 100% (20 mA) to air-operated closed valves with a range of 0% (20 mA) to 100% (4 mA)?
Reply #22019-09-16
5 has never been used; only 6 has been used. There is an inverted range option in the AO point panel
Reply #32019-09-17
The IO point channel setting includes a reverse output at the end.

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