Name *: Stepper drives
Description *: 
The family of STR stepper drives has two new AC-powered units for use in industrial applications. Offering the benefits of low noise, smooth motion, and high torque over wide speed ranges, the STRAC stepper drives bring motion control to basic step and direction applications. Units are suitable for larger motors and applications requiring maximum power.
Like their DC-powered counterparts, the stepper drives have microstepping performance and current control with antiresonance that improves motor smoothness and torque over a wide speed range. Units operate on AC supply voltages of 90 VAC to 240 VAC and wire directly to 120 VAC or 220 VAC line voltages to eliminate DC power supply requirements. The drives internally convert AC line voltages to high DC bus voltages to drive large step motors at maximum power.
Available in two models, the STRAC2 provides up to 2.2 A per phase, while the STRAC8 provides up to 8.0 A per phase. Every stepper drive in the STR series operates in step and direction or pulse/pulse control mode. Select between the two modes by moving a jumper located under the drive cover or via a dip switch on the front panel. Each drive microsteps to 25,000 steps/rev with a 1.8° step motor (1/125 step) even when command pulses are low resolution-thanks to the proprietary step smoothing filter. Users can set up drive parameters-including motor selection, current, and step resolution-using dip or rotary switches. No software is required
Date Submitted*:  6/7/2018