I have a question regarding the Delta DVP-32EH

2019-04-11View Original

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I would like to ask: On the Delta DVP-32EH controller, there is an AC voltage of around 90V across both the positive and negative terminals of the 485 port with respect to ground. Where does this voltage come from? http://imgsrc.baidu.com/forum/w%3D580/sign=b3eda9691130e924cfa49c397c096e66/16bb5f90f603738d1d92b843bd1bb051f919ec36.jpg

Reply #22019-04-12

Is it the same when the circuit measurement interface is disconnected?

Reply #32019-04-13

It must be the induced electricity in the circuit; can voltage still be measured by directly testing the terminals?

Reply #42019-04-22

Disconnect all connections and connect two 220V power supplies separately – the same situation persists

Reply #52019-04-22

There is still voltage when measuring the terminals directly

Reply #62019-04-23

It seems that your 485 communication isn’t receiving a signal.

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I have a question regarding the Delta DVP-32EH

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