New STAC6 Stepper Drives offer sophisticated motion algorithms and increased levels of programmability. The drives offer current output up to 6A, direct ac input without a transformer, bus voltages up to 200V ac and software selectable resolutions from 200 to 51,200 steps/rev at speeds up to 133 rps. New DSP-based algorithms focus on anti-resonance technology, demand signal smoothing, torque ripple smoothing and microstep emulation for systems that require low step resolutions. Self-Test and Auto-Setup features measure and configure motor parameters automatically. Macro assembly language programming provides register manipulation, conditional processing, math functions, multi-tasking capabilities, plus pulse & direction and encoder following capabilities for electronic gearing. For more information on the STAC6 Stepper Drives, visit http://rbi.ims.ca/4919-526.