Product Description:

The Bosch Rexroth Indramat RD52.1-5N-055-L-V1-FW belongs to the RD 500 Drive Controllers series. It is supplied as a drive controller that conditions three-phase power and manages motor torque in automated material-handling, packaging, and process cells. Through internal current loops and speed feedback, the unit converts upper-level setpoints into precise inverter pulses so that connected machines accelerate smoothly, hold commanded speeds, and respond predictably to load transients.

The control platform uses field-oriented vector control, allowing real-time decoupling of flux and torque components for accurate performance across the full speed range. Its power section is rated at 55 kW, giving it sufficient headroom for medium-sized pumps, blowers, or extruders that draw sustained current at nominal line voltage. Incoming energy is accepted from a 3 × AC converter supply, and the design is optimized for grids that provide a line-to-line potential within the 500 V operating window. To remove switching and conduction heat, the housing relies on forced air cooling, and the airflow keeps semiconductor junction temperatures within acceptable limits so the controller can maintain continuous output without excessive thermal derating.

The model is supplied without a built-in brake chopper, so applications that require rapid DC-bus energy dissipation must use an external resistor or regenerative unit. Auxiliary electronics remain active during mains outages through external 24 V standby power, which supports parameter memory and fieldbus communication while the main link is de-energized. The unit is built as design generation 1, which matches the first-release RD 500 option cards and interface kits. The controller does not include factory-loaded firmware, and firmware must be ordered as a separate subposition.