The RD 500 Drive Controllers series is a family of frequency converter drive control devices designed for industrial motor control applications across multiple power and performance classes.
Within the series, the RD51 is used for V/f characteristic control, while the RD52 is designed for field-oriented vector control, giving the platform flexibility for different control requirements and machine tasks. The series is available in multiple size classes and cooling variants, including air-cooled and liquid-cooled configurations, to suit a wide range of cabinet layouts and operating conditions. It also supports integration with related power and line components such as EMC filters, line reactors, power pack modules, and, in higher-power SFT applications, the RD43 power inverter. Overall, the RD 500 series is intended for configurable drive systems that require scalable power handling, application-specific control methods, and coordinated installation within industrial control cabinets.