Product Description:

The RD52.1-4B-132-F-V3-FW is a drive controller produced by Bosch Rexroth Indramat within the RD 500 Drive Controllers series. As the power interface between the line supply and an industrial motor, it regulates speed, torque, and braking energy in automated machinery and continuous-process lines. Its control architecture, cooling system, and protective functions support high-power equipment that operates under variable mechanical loads. This makes it suitable for plant equipment that must respond smoothly to changing load conditions during startup, steady operation, and deceleration.

Rated at 132 kW, the controller can deliver substantial output when paired with appropriately sized motors. It accepts line voltages from 380 to 480 V and is configured for a three-phase supply noted as converter 3 x AC, allowing connection to standard industrial power distribution systems. The permissible mains fluctuation of ±10 % helps the drive remain stable during moderate grid variation. Motor flux and current are processed with field oriented vector control, so torque response remains linear across a wide speed range. An integrated mains filter suppresses conducted emissions at the supply connection.

The controller’s energy handling is strengthened by a built-in brake chopper that diverts surplus regenerative power to an external resistor, allowing rapid deceleration without overvoltage faults. Thermal management uses integrated forced-air cooling with liquid circulation, so heat is removed from the power modules through a combined airflow and coolant path. Application-specific behavior can be selected through the Combination: V1 + W1 + Z1 function set. The unit is in Design Generation 1. This arrangement supports operation in demanding drive applications where heat control and regenerative braking are both important.