Delta OT1 fault code meaning
Delta / OT1
Series: VFD-DD, VFD-ED
Overtorque
AC motor drive
Meaning:
Possible causes
Source: VFD-DD (Ver. F, S, T & V ) (DELTA_IA-MDS_VFD-DD_UM_TC_20170609) P59; VFD-ED Series User Manual (DELTA_IA-MDS_VFD-ED_UM_SC_20170315) P105