Product Description:

The Bosch Rexroth Indramat RD52.1-4N-005-L-V1-FW belongs to the RD 500 Drive Controllers series. Designed for cabinet installation in automated machinery, this unit converts three-phase mains power into controllable output for AC motors, allowing precise speed and torque regulation on production lines, packaging equipment, and process drives. By integrating regulation and power electronics into a single module, it simplifies wiring, coordinates with higher-level PLCs, and supports applications that demand continuous duty at fixed or variable loads.

The controller is dimensioned for motors drawing up to 5.5 kW, so its internal IGBT stage and current sensors are sized for medium-power conveyors and mixers. It operates from a three-phase supply of 380 to 480 V, and the permissible deviation of ±10% helps the electronics tolerate brief sag or swell events. Vector regulation is achieved through field-oriented vector control, which models stator currents as orthogonal components to maintain torque even at low speed. Heat generated by switching devices is removed through forced air cooling, so directed airflow keeps the heat sink within safe limits in ambient temperatures typical of enclosed cabinets.

The power stage is supplied as a 3 x AC converter module, so rectification and inversion are combined in one housing and no separate DC bus supply is required. A factory-mounted mains filter is integrated, reducing conducted emissions and easing compliance with plant EMC rules. The unit ships without a built-in brake chopper, so an external resistor pack and chopper board must be added if dynamic braking is needed. Control electronics remain active via external 24 V standby power, allowing fieldbus communication and parameter retention when the main supply is isolated. It is identified as design generation 1, and the firmware is ordered separately to match application-specific function sets.