The Bosch Rexroth Indramat RD51.1-4N-005-L-NN-FW/S111 from the RD 500 Drive Controllers series is a high-performance AC drive converter designed for precise motor control. Manufactured by Bosch Rexroth Indramat, this model features a nominal connecting voltage of 3 x AC 380-480 V and delivers a rated power of 5.5 kW. Equipped with forced air cooling and an internal air blower paired with a dedicated heat sink, it maintains optimal thermal stability in demanding industrial environments. The drive is supplied as a Converter without a built-in brake chopper, allowing customization and integration into complex automation systems.
With a compact, modular housing design, the RD51.1-4N-005-L-NN-FW/S111 enables tool-free replacement of individual units, reducing downtime and simplifying preventive maintenance. Operational efficiency is specified at 95%, ensuring minimal energy loss during continuous operation. The unit is controlled via a user-friendly panel that includes a four-line display and responsive pressure-sensitive keys for in-situ parameter adjustments. Note that the firmware module is sold separately, granting flexibility for future feature upgrades and tailored configuration.
Engineers will appreciate the drive’s compliance with global power standards and its one-year warranty for peace of mind. Integration is further streamlined by standardized electrical connections and consistent mechanical footprints within the RD 500 series. Together, these features make the RD51.1-4N-005-L-NN-FW/S111 an ideal solution for synchronous and induction motor control in sophisticated industrial applications.
Cooling Mode
forced air cooling
Nominal Connecting Voltage
3 x AC 380-480 V
Rated Power
5.5 kW
Unit Type
Converter without a built-in brake chopper