Rozwiązania i Komponenty dla AutomatykiSolutions and Components for Automation


SMC 139WP is a microchip, high-voltage stepper motor driver, designed to control motors with phase current up to 8.2 A. The user has 8 current settings from 3 to 8.2 A with one power supply 25 up to 75 volts constant voltage and 8 deep step divisions. The powerful MOSFET transistors in a galvanically isolated casing are mounted on a solid beam, they give a certain amount of heat on the chassis of a cooled fan. The SMC139 controller is made in an aluminum casing with a heat sink and a fan that cools cooling. The housing can be mounted to the mounting rail. Removable terminal blocks for power supply, motor and control signals allow quick assembly and disassembly without the need to unscrew the wires.

The power levels in the SMC139 driver operate at a chopping frequency of 25 kHz, and the mixed method of extinguishing the current gives energy savings with an optimal current shape, which is related to the precision of the mixed decay motion. The TMC239 control system includes non-linear D / A converters that achieve a 1/16 step split. The system is equipped with a precise control system of current and overload control over the upper and lower links of the power bridge. The controller has a built-in internal galvanically insulated + 5V power supply external to facilitate user application (for example to power transoptors).


  • Microprocessor, FET lowRon power stages
  • Closed housing made of aluminum profile
  • Short-circuit and thermal protection
  • Frequency up to 50 kHz
  • Digital signal filter step
  • Setting the current using the miniature DIP switches
  • Advanced technology, SMD assembly
  • Automatic sinusoidal shape
  • Optoisolated input
  • Frequency of chopping 25 kHz
  • Automatic voltage reduction
  • LED indicator for power supply
  • Power supply and signals to the motor on disconnector strips
  • Additional, separated + 5V galvanic power supply for opto-isolated input control
  • Cooling forced by a fan
Current on phase [A]3 - 8,2
Voltage supply [V]25...75 DC
The maximum division of the step16
Operating mode2 phase bipolar



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