The complete RK series 5-phase stepping motor and driver package is RoHS compliant. The series incorporates a smooth drive function that ensures low vibration and low noise operation at low speeds by employing microstepping within the driver independently of the controller’s output frequency. The step motor’s basic angle can be electronically divided into a maximum of 250 microsteps. The RK driver provides 16 resolution levels for both microstep low speed operation as well as high speed full step operation. The new driver features include improved angle accuracy control and higher starting frequency response.