Articles on: Learning & FAQ

How to Choose a Suitable Driver for the Motor?

How to choose an appropriate driver for the motor? This has always been a high-frequency problem. Regarding several of our current hot-selling drivers, we have made the following instructions.
ModelVoltage RangeCurrent Range(PEAK)Current Range(RMS)Applicable Motor(NEMA)
DM320T10 - 30VDC0.3 - 2.2A0.21 - 1.56A8, 11, 14, 16, 17
DM332T18 - 30VDC1.0 - 3.2A0.71 - 2.29A11, 14, 16, 17, 23
DM542T20 - 50VDC1.0 - 4.5A0.71 - 3.2A17, 23, 24
DM556T24 - 48VDC1.8 - 5.6A1.3 - 4.0A23, 24
DM860T18 - 80VAC/24 - 110VDC2.4 - 7.2A2.0 - 6.0A34
CL42T24 - 50VDC0.8 - 2.8A1.0 - 2.0A11, 14, 16, 17
CL57T24 - 48VDC2.8 - 7.0A2.0 - 5.0A17, 23, 24
CL86T24 - 110VDC5.6 - 8.0A4.0 - 5.7A34

As shown in the figure, we recommend selecting an appropriate driver based on the size and current of the motor.

So should the current be selected according to PEAK or RMS?

In our experience, we usually match the RMS value on the drive to the rated current of the motor to ensure higher performance. When we sense the motor is overheating, we match the motor's rated current to the peak value on the drive. Furthermore, under short-term duty cycle conditions, we recommend using the RMS value, and under long-term duty cycle conditions, we recommend the PEAK value. More details are available How to Set the Current on Stepper Driver, RMS or Peak?

Updated on: 20/09/2023

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