The AIC-42SA is a servo drive module manufactured by Autonics for use in 2-phase, bipolar, stepper motors with encoders. It has a rated power of 60 watts and a variety of adjustable parameters that can be set to precisely control the motor's operation. The AIC-42SA has a built-in current-loop control system that allows for a smooth response with quick response times. It also has protection from over-voltage, over-current, and over-temperature that can be adjusted for different applications. Its compact size and low weight make it a good option for applications where space is limited, such as robotics and automation. The AIC-42SA has been tested and certified to UL, CE, and RoHS.