Product Description:

The RD52.1-7N-160-R-MV-FW is manufactured by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It operates between a common DC supply and high-capacity AC motors, converting process commands into controlled torque and speed for conveyors, compressors, and other continuous-duty equipment. Through regulated current and voltage output, the unit supports coordinated drive operation where stable response and accurate setpoint tracking are required. That role allows the controller to balance motor demand against bus conditions during changing load states in long-running process systems.

This controller uses field-oriented vector control, which keeps motor flux aligned for fast torque response and stable low-speed operation. Heat from the power section is removed by liquid cooling with an internal pump, a cooling method used on higher-output frames to keep power semiconductors within their operating range. When matched with a suitable motor, the converter can provide up to 160 kW of output power. It connects to an intermediate bus supplied by an inverter DC source, and the main terminals accept 530 to 670 V on the DC bus. The unit is part of generation 1 of the RD family, so it follows the parameter structure and option layout used in that product generation. This control method also helps the drive maintain smooth motor operation during load changes and low-speed running.

The controller operates without a built-in brake chopper, so systems that require dynamic braking must use an external unit on the DC link. In multi-drive systems, regenerated energy is managed at the system level rather than inside the controller housing. Pump control, flux optimization, and diagnostic functions are handled within the operating platform of the drive. As a Drive Controller, the unit is intended for continuous industrial service in systems that rely on a centralized DC bus. That layout is common where several axes or process motors share the same power infrastructure.