Product Description:

The Bosch Rexroth Indramat RD51.1-4N-007-L-NN-FW belongs to the RD 500 Drive Controllers series and is configured for fixed-speed and variable-speed induction motor applications in industrial automation. By converting three-phase mains power into a controlled output, the unit regulates motor operation in packaging lines, material-handling cells, and process equipment. It is intended for installations that need dependable speed control for standard induction motors rather than highly specialized servo functions. The enclosure format and control architecture match the general layout used within this drive family.

The controller delivers a nominal output of 7.5 kW, which suits medium-power duties that need stable performance during continuous operation. It is supplied through a three-phase AC converter input and accepts line voltages from 380 to 480 V, so it can operate on common 400 V plant networks. Input variation is allowed within a ±10% range, which helps the drive remain operational when facility power shifts within normal limits. Motor excitation uses U/f curve control, which adjusts output voltage in relation to frequency to maintain magnetic flux in open-loop operation. This control method is commonly used for pumps, fans, and other machinery that does not require closed-loop vector control.

Thermal management relies on forced-air cooling, which moves cabinet air across the heat sink to control internal temperatures during higher-duty operation. Dynamic energy from overhauling loads is not handled internally because the unit is configured without a built-in brake chopper, so applications with braking demand require an external braking solution. Line-borne interference is reduced by an integrated mains filter, which helps limit conducted noise and saves panel space. The hardware is classified as Design Generation 1. Its option slot is not equipped, so no additional plug-in function is installed in the standard configuration.