Base on the example of the DC motor with magnetic flux weakening the position electric drive optimal profile is considered. The criterion of optimization is a minimum of electric losses in armature winding. The comparative analysis of triangular, parabolic and quasioptimum trapezoidal profiles is carried out. Parameters of the modes “minimum minimorum” and a zone of rational change of acceleration for a variation of movements time are determined. For optimum “parabolic” profiles at magnetic flux weakening there is a limit value of speed determined by the relation of values of a current limitation to load torque. Parabolic profiles can be replaced with some form of their approximation - quasioptimum profiles which can provide execution of the same given relocation for the same time at 12… 24% bigger losses.