Product Description:

The RD52.1-7N-200-R-MV-FW is a drive controller developed by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It regulates large induction or synchronous motors in plant automation, converting DC-link energy into variable AC output so conveyors, extruders, and other continuous-duty machines can run with controlled torque and speed. Its vector-based control behavior supports accurate speed regulation during load changes and helps keep process output stable over long operating periods. This makes the unit suitable for production lines where consistent motor response is required across a wide operating range.

The drive accepts a DC bus of 530 to 670 V. Under this input, the inverter can deliver up to 200 kW of mechanical output, making it appropriate for high-capacity drive tasks. Thermal management relies on liquid cooling with an internal pump, which carries heat away from the power modules and helps stabilize semiconductor temperature when the rating exceeds 132 kW. This cooling method reduces dependence on surrounding cabinet airflow and supports sustained operation at high power levels. Motor regulation uses field-oriented vector control, so stator currents are separated into torque-producing and flux components for responsive speed and torque behavior across the operating range.

The controller is supplied from an Inverter DC source, which supports common-bus layouts that can share regenerated energy between connected axes. Mechanical braking energy is handled externally because the unit comes without a built-in brake chopper. The controller belongs to Design Generation 1, which keeps parameter compatibility consistent within that product generation. In multi-drive systems, this arrangement helps centralize DC supply architecture and places braking components outside the controller when the application requires external energy dissipation.