What do the 3 DI and 3 DO of the motor refer to? How are various instrument points estimated?

2019-04-25View Original

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What do the 3 DI and 3 DO of the motor refer to? How are various instrument points estimated?

Reply #22019-04-26

Signal types for connecting to the instrument system: d for digital signals, i for inputs, o for outputs. For example, operating status di, start/stop do, frequency conversion ao. As for how to estimate the instrument points, each control valve corresponds to one AO, each shut-off valve to one DO and two DI signals; level switches and similar devices use DI signals, while other input instruments are paired one-to-one

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