ST10-Si stepper drives deliver 24 to 80 Vdc with an output current of up to 10.0 A peak, and they protect against over-voltage, under-voltage, over-temp, and external output shorts. They provide 8 digital inputs and 4 digital outputs. The drives are programmable for stand-alone operation with Si Programmer Windows-based software. A graphical point-and-click format combines motion, I/O, and operator interface functionality for simple machine sequencing. As a result, these drives easily integrate with other devices on a machine such as sensors and PLCs. A disadvantage of step motors is their tendency to resonate at some frequency. Entering some system data lets the controller calculate this natural frequency and a damping term which is entered into the control algorithm. This is said to significantly improve midrange stability, while allowing higher speeds and more use of the available torque.

Applied Motion Products, 404 Westridge Dr., Watsonville, CA 95076, (800) 525-1609, www.info.hotims.com/18361-255