Product Description:

The RD52.1-4B-160-F-NN-FW drive controller is produced by Bosch Rexroth Indramat and belongs to the RD 500 Drive Controllers series. It is a three-phase AC converter that manages induction or synchronous motors in automated machinery, allowing closed-loop speed and torque regulation for conveyors, extruders, and other continuous-duty loads. Its control platform is suited to processes that must maintain stable motor behavior while load demand changes during operation. This makes it suitable for production equipment that must respond smoothly to changing throughput and process resistance. The unit is commonly applied where adjustable drive output is needed without sacrificing repeatability in long production runs.

Its power section uses a 3 x AC converter input that accepts line voltages from 380 to 480 V and remains stable within a tolerance of ±10 %. An integrated mains filter attenuates conducted interference so additional line components are often unnecessary. The controller delivers a nominal output of 160 kW, which indicates the rated power available for the connected motor under normal operating conditions. A built-in brake chopper dissipates regenerated energy during rapid deceleration, helping prevent DC-bus overvoltage when the driven load slows quickly. This arrangement supports applications with frequent speed changes, heavy rotating mass, or repeated stop-and-go cycles.

Motion commands are processed with field-oriented vector control, so current components stay aligned with motor flux for precise torque response across the speed range. Heat produced by the power semiconductors is removed by forced-air cooling with integrated liquid circulation; an internal blower moves air through a liquid-cooled heat exchanger, which helps manage heat in confined cabinet spaces. The hardware corresponds to design generation 1, indicating the first design generation for this configuration. The cooling path also removes heat without relying only on open cabinet airflow. This control and cooling combination supports steady operation during sustained industrial duty and during applications that demand consistent response at varying motor speeds.