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What do EP and PTM on the electrical wiring terminals of a pneumatic control valve mean?

2022-08-16View Original

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What do EP and PTM mean on the electrical wiring terminals of a pneumatic control valve? It is marked as 4-20mA under EP, and ±24V under PTM. Does EP refer to the input, while PTM refers to the feedback output? Does the DCS input provide 24V to the PTM, while the PTM outputs 4-20mA to the DCS input as feedback?

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