The OFS350-DRI is a microstepping drive offering 400 to 12,800 steps per revolution, a step phase sequencer with MOSFET three-state switching amplifiers, and optoisolated circuits. The drive includes an automatic feature to lower motor current by 50% whenever the motor is left at rest for more than one second. (This feature can be disabled.) There is also a switch-selectable self test that rotates the motor one-half a revolution in each direction at 100 steps per second. The amplifier regulates motor current by chopping at a constant, inaudible frequency. Phase current is selected from 32 levels by a DIP switch, which also controls the microstepping resolution.

  • Open frame design lowers cost and maximizes value
  • Easy dip switch setup
  • Accepts standard 5V step and direction signals
  • Convenient screw terminal connectors
  • 400 - 12,800 steps per revolution
  • 12 - 42VDC input voltage
  • Up to 3.5 A peak motor current per phase
  • Drives size 11, 14, 17, 23 and 34 steppers

Catalog & Specifications
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Quick Reference Guide
Hardware Installation Guide

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