The VEXTA ASD12B-C is a high-performance driver for the Oriental Motor AlphaStep AR Series of closed-loop stepper motors. This driver combines the high torque and low vibration characteristics of a stepper motor with the reliability of a servo motor’s closed-loop feedback system, ensuring precise positioning without hunting or gain tuning. The “C” designation indicates that it is a Built-in Controller (Stored Data) type, allowing it to store and execute motion sequences via I/O, which simplifies system configuration and reduces the load on the host controller. It is an ideal solution for automation applications requiring high accuracy, quick response, and dependable operation.