Product Description:

The RD52.1-4B-160-F-M1-FW is a drive controller engineered by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. As a closed-loop power electronics module, it regulates induction or synchronous motors by converting incoming three-phase power into controlled output for automated plant equipment. In industrial automation, it sits between the mains supply and the mechanical load, allowing the system to deliver commanded torque and speed while exchanging control signals with higher-level PLC systems.

The controller uses a three-phase AC mains connection and accepts line voltage from 380 to 480 V. It tolerates supply variation of ±10% without derating, which helps it remain compatible with common industrial power networks. Internally, the drive uses field-oriented vector control to maintain accurate motor regulation during both steady operation and changing load conditions. The power stage supports a continuous output of 160 kW, making it suitable for demanding applications such as pumps, extruders, and test stands. An integrated mains filter reduces conducted interference, so the installation can meet EMC requirements without adding a separate external filter.

Thermal management uses integrated forced-air cooling with liquid circulation, combining blower-driven airflow over the heat sinks with a coolant loop that removes concentrated losses from the power section. This arrangement helps stabilize internal temperature during sustained operation and under heavy load changes. A built-in brake chopper handles regenerated energy during deceleration, which helps protect the DC link from overvoltage when high-inertia loads slow down. The power stage is supplied without output chokes, a layout that can simplify cabinet arrangement where motor cable lengths are short or where multiple drives share a common DC bus.