Every now and then the question comes up as the inductance range the 6410 requires for stepper motor operation. The answer is none. The 6410 is not limited to a range of inductances.
The 6410 stepper drive has a patented 4-Phase PWM chopping which electronically controls the motor winding currents at 20 kHz frequency. The combination of recirculating and non-recirculating current regulation eliminates high back emf with low ripple, which means that the circuit is independent of motor inductance.