Product Description:

The RD52.1-7N-132-F-NN-FW is a drive controller manufactured by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. Installed between a common DC bus and an AC motor, it regulates torque and speed so that automated machinery follows commanded profiles with minimal overshoot. Typical tasks include conveyor regulation, pump modulation, and positioning duties where vector-based current control is preferred. This layout makes the unit suitable for applications that need stable motor response across changing load conditions.

This model employs field-oriented vector control, which independently manages stator flux and rotor torque components for accurate dynamic response. Thermal energy is removed through forced-air cooling with integrated liquid circulation; an internal fan moves air across the heat sinks while a liquid loop carries heat outside the cabinet. Its power section is rated for 132 kW, allowing it to drive large production motors in continuous-duty service. The DC link operates over 530 to 670 V, a range that matches rectified three-phase mains or shared bus systems. Supply energy is delivered through an inverter DC feed, which helps isolate the controller from line disturbances and supports shared regenerative operation across multiple drives.

The drive is delivered without a built-in brake chopper, so external chopper hardware is required when regenerative peaks must be dissipated as heat. As a design generation 1 unit, it follows the first-release RD mechanical dimensions and parameter map used for this product line. The controller is supplied without supplementary technology modules, so advanced application functions remain with higher-level PLCs or motion controllers. This configuration keeps the drive focused on core motor control, DC-bus operation, and thermal management rather than add-on application features.