Product Description:

The Bosch Rexroth Indramat RD52.1-4N-045-L-V1-FW drive controller belongs to the RD 500 Drive Controllers series. It functions as a three-phase AC converter that regulates induction or synchronous motor output inside automated assembly stations and continuous-process lines. By implementing vector-based current modulation, the unit links plant-level control systems to shop-floor actuators, ensuring commanded torque values are delivered accurately while maintaining energy efficiency in variable-speed applications.

Its motion algorithms rely on field-oriented vector control, so torque and flux components are calculated separately for fast dynamic response. Cooling is managed through forced air cooling, and a cabinet fan directs airflow along the heat sink to keep semiconductor junction temperatures within limits during high current cycles. Because the controller is supplied without a built-in brake chopper, excess regenerative energy must be routed to an external resistor when decelerating large inertial loads. An integrated mains filter attenuates conducted emissions, allowing installation on industrial low-voltage networks without additional line filters. The power section accepts line voltages from 380 to 480 V, matching typical 400 V utility grids in manufacturing plants.

Within this range, it can deliver a continuous output of 45 kW, providing adequate headroom for medium-frame pumps, fans, or conveyor drives. The front-end rectifier is designed for a three-phase AC converter supply, so current is drawn symmetrically from all phases and conforms to a tolerance of ±10 % on the nominal input. Control electronics remain active through the provision for 24 V standby power, allowing fieldbus communication and parameter retention when the main power stage is de-energized. The unit uses generation 1 hardware and keeps the same mechanical mounting footprint.