Product Description:

The RD52.3-8C-160-R-MV-FW drive controller is produced by Bosch Rexroth Indramat and belongs to the RD 500 Drive Controllers series. Classified as a drive controller, it links the DC bus of an automation cabinet to high-power induction or synchronous motors, regulating speed and torque according to process demands. Intended for large conveyors, mixers, or extrusion lines, the unit is supplied as a stand-alone inverter section that fits directly beside companion rectifier or regenerative modules within the same rack. This arrangement separates the inverter from the supply section and supports modular cabinet layouts for high-power drive systems.

The controller employs field-oriented vector control, keeping the stator flux constant so dynamic torque commands remain linear. Its continuous output stage delivers 160 kW, and the housing uses liquid cooling with an internal pump. The pump circulates coolant whenever installed power exceeds 132 kW to remove switching and copper losses from the IGBTs. Power is supplied from an intermediate link rated for Inverter DC operation, and the bus can be driven up to 700 V, allowing common-bus operation with rectifiers that share similar voltage windows. The liquid circuit helps limit thermal drift during long operating periods and supports stable current control under sustained load.

The controller is design generation 3. It runs in mode RD51 SFT, so its menu structure mirrors lower-power RD51 devices. The mechanical layout follows the SFT inverter variant, concentrating power terminals on rear busbars for direct coupling to sandwich DC links. That rear connection layout helps keep high-current wiring short and organized inside the rack. The required software is obtained as a separate subposition so the power section can be matched to the selected motor data and option cards.