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Why does the ATV28 unit show NST on display and will not run and manual doed not even show what NST fault is?

NST is on display when a logic input is assigned to freewheel stop and that input does not have 24v on it. This input is assigned in the I/O menu.

The book does not list this as a fault because it is not considered to be such but is a condition of the drive which it is instructed to be in. The drive is indicating that it is being told to stop which takes precedence over any possible run command.


CTA-ID : 2010987
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