The 6SE6420-2AB21-1BA1 is a Siemens drive controller. It is a vector-controlled frequency converter for general industrial use, offering an increased level of performance and energy efficiency in a robust cabinet-level design. The drive offers a wide range of features, including adjustable speed control, ramp/soak profile control, process monitoring and diagnostics, and dynamic braking. It is designed for use with AC asynchronous motors up to 5.5 kW and is suitable for use in a wide range of industrial applications, such as pumps, fans, and other general process control applications. The 6SE6420-2AB21-1BA1 is also compliant with EMC directives and offers numerous integrated protection functions.