Product Description:

The RD52.1-7N-132-F-V1-FW is a controller produced by Bosch Rexroth Indramat and assigned to the RD 500 Drive Controllers series. It regulates three-phase induction or synchronous motors in factory automation lines, delivering closed-loop speed and torque management that matches process demands. This makes it suitable for heavy-duty motion tasks where stable motor control is needed as load conditions change. It can be used on equipment such as extrusion lines, pumping systems, and other industrial machines that require controlled acceleration and steady continuous operation.

This unit operates within a DC-bus window of 530 to 670 V, allowing it to draw energy from intermediate circuits common to multi-axis installations. Motor regulation is executed with field-oriented vector control, so the current components stay aligned with the machine’s magnetic field for precise torque response at low speed. Internal thermal management uses forced-air cooling with integrated liquid circulation; fans move air across heat-sink fins while an embedded coolant channel carries heat away from the power semiconductors. The power section is rated at 132 kW, permitting the controller to support large pumps, extruders, or test-bench drives. The unit is supplied without a built-in brake chopper, so applications with rapid deceleration require an external braking solution.

The DC link is energized from an inverter DC supply, which allows several axes to share a common rectifier arrangement. Control electronics remain active through 24 V standby power, so parameter retention and communication can continue when line power is removed. This also helps the controller preserve its operating state during controlled shutdown conditions. The unit is design generation 1, which corresponds to the first RD52 layout for connectors and diagnostic functions. The required firmware must be ordered as a separate subposition so the controller can be matched to the selected option set.