Stepper motor controller Zaber Technologies

A chopper drive is one method of driving a stepper motor with constant current rather than constant voltage. This reduces the effects of counter EMF and inductance, increasing torque at higher speeds.

One or more of Zaber's T-CD chopper drives can be daisy-chained to a single RS-232 serial port or USB port on any computer. They can also be daisy-chained with any other T-Series products. Convenient 6-pin mini din cables on the unit allow for direct interconnection between units in close proximity. For longer distances, standard cable extension can be used. To control motor position, simply transmit on the serial port the unit number of the device you want to move, a simple move command and the position desired. After the move, the T-CD will report the final position.

More specifications...