Product Description:

The RD52.1-8C-160-R-M1-FW is a high-power drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. In an automation rack, it converts DC-link energy from a common supply into three-phase output for industrial motors. This allows precise speed and position regulation for conveyors, extruders, and processing spindles. Because the unit works from a shared DC source, it can serve as the controlled power stage for high-inertia motors in centralized drive systems.

This controller uses field-oriented vector control, so torque follows reference commands quickly even when the motor is lightly loaded. Its rated output capability is 160 kW, which suits large continuous-duty axes without unnecessary cabinet growth. Heat produced at this power level is removed through liquid cooling with an internal pump. The integral cooling circuit keeps the heat sink below critical temperature without relying on cabinet airflow. The DC link operates at 700 V, matching the upstream rectifier section. The unit belongs to design generation 1, so its mechanical dimensions and connector positions follow the first hardware release for the RD 52 family.

The power section is supplied from an inverter DC bus, and the line filter section is external because the SFT power module is specified without output chokes. An external line filter keeps the supply-side filtering separate from the inverter stage, which helps preserve cabinet layout flexibility in larger installations. When set to RD51 SFT operating mode, its control behavior matches smaller RD51 units, which can simplify integration in mixed installations on the same fieldbus. The chassis is factory-wired as an SFT inverter, integrating the precharge contactor and braking transistor in one assembly. The required application package is ordered as a separate subposition, so the control software is supplied independently of the power hardware.