An AC servo drive is a piece of equipment for controlling an AC servo motor according to the commands received from the controller. In the 1S Series servo drive, the internal processing algorithms have been improved in a way that it is able to completely execute the motion commands from controller in an unrivaled short time, while always keeping a smooth movement and improving accuracy, all together makes the machine faster and more precise which provides higher machine production with better product quality. Moreover, its design provides smooth installation and good-looking wiring inside the panel.