FDD15-12S2 is a stepped motor drive designed by the Chinese company Chinfa. It is a 5-phase, 12A digital stepper motor drive with a voltage range of 24V to 110V. It has a built-in micro-stepping technology to provide smooth and accurate motion control for any type of stepper motor. It is suitable for a wide range of applications, from industrial automation to 3D printing. It also has advanced current regulation and protection functions, with auto-shutdown and over-voltage protection. Additionally, it supports multiple communication options, including Ethernet, CAN, RS-485 and USB.