I have a Servostar CD CE06250 AC brushless servo drive and am having trouble getting it to enable. The only condition that isn't met is the hardware enable. The manual says that a 12 to 24VDC external signal is required. I got that, attached the low wire to ground and the 24V to pin7 on connector3, then shorted pins 7 to 8 on connector3 (which should enable the hardware). Maybe there is some trick that i don't know.
My other guess is that a fuse is blown somewhere in the drive (this drive may have been previously used).