Product Description:

The RD52.3-8C-160-W-V1-FW is a drive controller manufactured by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. As an SFT inverter variant, this unit interfaces between a DC supply and three-phase induction or synchronous machines in factory automation. By modulating voltage and frequency, it provides motion control and energy savings in conveyors, extruders, and similar high-power applications. Its role is to convert the available DC link energy into controlled motor output for demanding industrial processes.

The controller employs field oriented vector control, allowing real-time decoupling of torque and flux so that motor currents follow dynamic reference commands with minimal error. Thermal regulation is handled by liquid cooling, which transfers heat to an external circuit and permits dense cabinet layouts without high internal airflow. The DC bus accepts up to 700 V, giving the inverter enough headroom for high line voltages while staying within semiconductor limits. Under those conditions, the unit delivers 160 kW of rated output power, matching large production motors that require sustained output. Power is supplied through a DC bus input, so the device is typically connected behind a common rectifier or regenerative link that can share energy with other drives on the same bus.

The unit belongs to design generation 3, so its control boards, gating circuits, and diagnostic interfaces follow the third release used across the RD 500 platform. An auxiliary line provides 24 V standby power, allowing retained settings and fieldbus monitoring when the main DC link is de-energized. The control platform uses RD51 SFT mode, which keeps its operating logic aligned with earlier RD51 controllers. The required program is firmware ordered as a separate subposition, so the software package must be selected with the order.