Altivar - What are the possible causes for status code nSt appearing on the display ?

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Product series:
Altivar ATV variable speed drives

The display status nSt means a freewheel stop of the drive.
This is not an error code but drive status indication.
lf the drive display shows nSt, it can not be started in “local” or “remote” control.

Remedy:
1:) In case of 3-wire control mode: check for the NC-contact ( stop ) on LI1 is opened.
2:) In case of 2-wire control mode: check in 2-wire control type is set to “level control” ( LEL ) or check if
the run command on LI1 is present during powering-up of the drive.
3:) nSt can be assigned to a logical input and this input is open ( 0V ).
4:) The STOP button on the locale contol path of the drive or on the external control is being activated while
the drive has an activated command on the terminals.
5:) The drive is in CIA402 (DSP402) “drive com NET command mode” and did not receive the right command for rdY or rUn.
6:) A control tension " dip" of the +24V power supply can also be the cause to get the drive into nSt (freewheel stop).