Product Description:

The RD52.1-7N-132-R-NN-FW belongs to the RD 500 Drive Controllers series manufactured by Bosch Rexroth Indramat. As a drive controller, it manages power conversion and motor regulation inside larger inverter cabinets used for conveyor lines, presses, and other high-power machinery. By supervising current, voltage, and torque loops, the unit links a plant’s DC bus to motors and provides adjustable speed and torque control for continuous-duty production environments.

Motor regulation is achieved through field-oriented vector control, a method that independently adjusts a motor’s magnetic flux and torque-producing currents to maintain precise shaft performance under load changes. The unit can deliver up to 132 kW of output, so it fits installations where high mechanical power is required. Incoming energy is taken from a common DC link, and the permissible DC link spans 530 to 670 V, giving the controller tolerance for moderate bus fluctuations. The supply category is Inverter DC, which means the module is intended to operate downstream of a rectifier stage rather than connect directly to the mains. Thermal energy from switching devices is removed through liquid cooling with an internal pump, an arrangement that maintains semiconductor temperatures during prolonged full-load operation.

The hardware is shipped without a built-in brake chopper, so external dissipation components are required when regenerative braking energy must be managed. The unit is design generation 1. Application software is ordered separately so the controller can be matched to the required motor and communication setup. The base variant is listed as Drive Controller with functions not equipped, so optional cards can be added as needed. This arrangement helps avoid unused I/O and keeps cabinet wiring more straightforward.