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ATV58 drive shows NST and will not start. I changed LCC to yes and the drive will still not start in remote keypad mode.

FA166703

19/08/2020

Issue:
Getting NST on and will not start the drive.

Product Line:
Altivar Machines, Altivar 58

Environment:
All models and serila numbers

Cause:
Logic input was assign to freewheel stop.

Resolution:
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.