Altivar - What are possible causes for nSt status ?
Product Line:
Altivar ATV Drive line
Display code nSt is a drive freewheel state. It is not a fault. If the drive is in an nSt state you can not run the drive in local or remote mode.
1:) 3 wire control: check to see if NC stop on LI1 is open to +24vdc.
2:) 2 wire control: check to see if the 2 wire type is level control or check to see if there is a run command on LI1 during power up.
3:) nSt assigned as an logic input and that input is open.
4:) Stop button has been pushed on the local face or remote HMI and the drive is being commanded in terminal mode.
5:) Drive is an CIA402 (DSP402) drive com NET command mode and is not received the proper commands to go to the rUn or rdY state.
6:) Any drop in +24V supply on the drive can cause nSt.
Altivar ATV Drive line
Display code nSt is a drive freewheel state. It is not a fault. If the drive is in an nSt state you can not run the drive in local or remote mode.
1:) 3 wire control: check to see if NC stop on LI1 is open to +24vdc.
2:) 2 wire control: check to see if the 2 wire type is level control or check to see if there is a run command on LI1 during power up.
3:) nSt assigned as an logic input and that input is open.
4:) Stop button has been pushed on the local face or remote HMI and the drive is being commanded in terminal mode.
5:) Drive is an CIA402 (DSP402) drive com NET command mode and is not received the proper commands to go to the rUn or rdY state.
6:) Any drop in +24V supply on the drive can cause nSt.
Released for: Schneider Electric Netherlands
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