Product Description:

Bosch Rexroth Indramat's RD52.1-4B-200-R-M1-FW is a drive controller from the RD 500 Drive Controllers series. As a drive controller, it coordinates power conversion and motor regulation in automated machinery, enabling speed, torque, and position control for large AC motors on production lines and other heavy-duty motion systems. The device belongs to design generation 1 of the platform and is intended for cabinet installation in material-handling lines, presses, and similar equipment where centralized power electronics are preferred.

It delivers a rated output of 200 kW, so it can energize high-horsepower induction or synchronous motors without external step-up stages and can support demanding industrial loads with substantial continuous power demand. The internal control algorithms use field-oriented vector control, which separates flux and torque components to maintain dynamic response under fluctuating load and low-speed operating conditions. The power section accepts a three-phase AC input and operates across a line window of 380 to 480 V, matching common industrial supply systems. Within that span, the converter tolerates line deviations of ±10 % before derating is required, which helps it remain usable on mains systems with normal voltage variation. For rapid deceleration, a built-in brake chopper directs regenerated energy to an external resistor instead of returning it to the supply.

Thermal management relies on liquid cooling with an internal pump for 132 kW and above, allowing the housing to remain compact while moving high heat loads to a secondary circuit rather than depending only on cabinet airflow. Power quality on the input is improved by an integrated mains filter, so additional line reactors are not required for EMC compliance in many installations and conducted interference on the supply is reduced. The output stage is specified without output chokes, which keeps the standard configuration simple while leaving room in the cabinet for motor-side reactors when long cable runs or installation conditions make them necessary.