Stepper Motor Driver

The Oregon Micro Systems MD125 is a high-end micro-step motor driver with selectable microstep resolutions.  The MD125 is small, compact and robust and provides available step rates range from full-step to 256 microsteps.  The MD125 driver is capable of delivering up to 1.5 million microsteps per second to the step motor and an output current from 0.1 – 7 Amps, operating from a supply voltage of 12 – 80 VDC.  The MD125 is designed to run hybrid PM step motors rated from .1 to 14 amps per phase.  When used with suitably sized motors, the MD125 can provide over one-third horsepower (300 watts) to the application.

The MD125 features an electronic 'circuit breaker' to help protect the driver from dangerous conditions.  Over-current (winding shorts, etc.), over-temperature (insufficient heat sinking), and under-voltage are sensed by the MD125.  When any of these conditions occur the MD125 shuts down and turns on a 'fault' LED to indicated the presence of the fault condition.
Measuring only 4"x 4.5"x .875" the MD125 is small and compact.  It comes encapsulated in a heat conductive epoxy and encased in an anodizes aluminum cover.  The result is an environmentally rugged package that resists abuse and contamination.  The pin-out, size and mounting of the MD125 driver is compatible with the previous OMS microstep drivers; MD10A and MH10.

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