Stepmotor driver SMD‑4.2

We recommend the model SMD‑4.2DIN ver.2

The model SMD‑4.2 is outdated, production discontinued. We recommend using new models instead. Please, check the list of present models here

SMD-4.2 is a stepper driver, designed by our company for 2 and 4-phases stepmotors with current per phase up to 4.2 A. Driver provides microstepping and current reduction in holding mode.

Standard logic signals STEP and DIR are used for motion control. Enable signal is also provided. SMD‑4.2 operates with external logic signals source – frequency generator, PLC, computer's LPT-port and etc.

The main parameters of stepmotor driver SMD‑4.2

  • Max. current per phase - 4.2 Amp
  • Power supply - 12 ‑ 48 VDC
  • Microstepping mode - 1, 1/2, 1/4, 1/16

Dimensions of stepmotor driver SMD‑4.2:

Dimensions of stepmotor driver SMD-4.2

Speed-torque curve for SMD‑4.2 with stepper motor SM8680:

speed-torque curve of stepper driver SMD-4.2 and stepper motor SM8680

X-axis - rotation speed, rpm; Y-axis - torque, kgf*cm
Measurement conditions: microstepping - 1/2, current per phase - 4.2 Amp, parallel connection

Please, refer the menu "download materials" at the right side of the page to learn speed-torque curves with other motor models.