Product Description:

The RD52.3-8C-090-W-NN-FW is a drive controller manufactured by Bosch Rexroth Indramat and belongs to the RD 500 Drive Controllers series. As a dedicated inverter module, the unit converts a common DC link into three-phase output power for induction or synchronous motors used in automated production cells, conveying lines, and similar motion tasks. This arrangement lets multiple axes share upstream power conversion while the controller shapes motor output locally for each drive task. Its field-oriented architecture supports precise torque and speed regulation in applications that need coordinated motor control across a shared power system.

This controller applies field-oriented vector control to regulate current and flux in real time, giving tight speed tracking even under load disturbances. Heat is removed through an internal plate and coolant circuit that support liquid cooling, so the power section can deliver sustained output in sealed cabinets. Because the power section is liquid cooled, heat is transferred away without relying on cabinet air circulation alone. The drive is part of design generation 3 and delivers a continuous mechanical output of 90 kW from a DC bus, while accepting a link voltage of up to 700 V. These ratings suit inverter-duty pumps, extruders, and centrifuges that require steady torque at low speed from a shared rectifier section.

System layout flexibility is enhanced by the Inverter DC supply interface, which eliminates individual rectifiers and simplifies braking energy recovery on a common DC link. In the application menu, the unit is identified as operating as RD51 SFT, and the product variant is the SFT inverter version for this controller type. That setup helps keep control behavior consistent in systems where several inverters operate from one bus. The drive is supplied without additional functional options, leaving accessory slots open for encoder or I/O cards as needed.