urgent problem ABB (ACS 600)

HI
iam new here ,i have aproblem in ABB frecuency converter(ACS 600) it gives fault (FLT (0-1)) WHEN WE USED control by (DTC) but if we used control by (scalar)(v/f) control it work without any problem.we used typical parameters from another one already work and we changed all cards AND IGBPT ALTHOUGH WE THINK IT has no problem and of course without any effect .please, can any one help me?
thanks on advance

gemi

forget the last any one read or know anything about that fault (flt 0-1) which appeared as soon as we used dtc with vfd abb acs 600?

gemi