(1) Current: when selecting stepper motor driver, current is one of the important reference indexes. The ability of stepper motor driver can be judged by current. Generally, the large current of the driver is slightly larger than the nominal current of the motor. Generally, the driver has 2.0A, 3.0A, 6.0A, 8.0a and other specifications.

(2) Driver power supply voltage: the power supply voltage is a sign to judge the speed-up ability of the driver. The conventional voltage supply includes: 24 V, 40 V, 48 V, 80 V, 110 V, etc.

(3) Subdivision: subdivision is the mark of controlling the precision of stepping motor. Increasing subdivision can improve the precision. Subdivision can increase the stability of the motor. Generally, stepper motor has the characteristics of low frequency vibration, which can be improved by increasing subdivision to make the motor run smoothly.