Product Description:

Bosch Rexroth Indramat builds the RD52.1-4B-022-L-V1-FW/S137 for the RD 500 Drive Controllers series. As a drive controller, it converts three-phase mains power into regulated motor voltage, letting automation lines vary speed and torque with closed-loop precision. The unit slots into cabinet racks where coordinated motion, energy recovery, and protective diagnostics are required for material-handling cells, packaging gantries, or extruder pumps.

This model operates over a line window of 380 to 480 V and is intended for grids that fluctuate within a ±10% margin. The power section is rated at 22 kW, so it can drive medium-frame induction motors without external step-down gear. Incoming power is accepted as a three-phase AC converter supply and is processed under field-oriented vector control, which resolves stator currents into torque-producing components for fast load following and stable speed regulation under changing loads. The controller uses generation 1 hardware, and its control system supports application macros and parameter blocks for consistent operation across different machine functions. A built-in DC bus monitor supervises brake energy, and the device also accepts external logic service through a 24 V terminal when the main contactor is open.

Thermal management relies on forced air cooling that channels cabinet airflow across the heat sink, letting the drive sustain heavy cyclic duty without derating during frequent acceleration and deceleration. Deceleration energy is routed to a built-in brake chopper, which reduces the need for separate braking hardware in many cabinet layouts. Mains disturbances are attenuated by an integrated mains filter, which reduces conducted noise to adjacent equipment and helps keep the incoming supply cleaner for nearby devices. For control retention during mains loss, the front panel exposes 24 V standby power terminals that keep fieldbus nodes alive until an orderly shutdown occurs.