Product Description:

The RD43.1-4R-185-R-NN-FW/S132 is manufactured by Bosch Rexroth Indramat and belongs to the RD 500 Drive Controllers series. It serves as the central conversion stage between the plant's three-phase mains and the DC link that feeds multiple motor inverters. This arrangement supports coordinated speed, torque, and positioning control in automated cells, machining centers, and material-handling lines. By combining rectification, regulation, and diagnostic functions in one enclosure, the unit simplifies cabinet layout and provides a standardized interface for downstream axis modules. It is suited to multi-axis systems where several inverters depend on a common regulated DC source.

This controller accepts utility power from 380 to 480 V and uses a three-phase AC supply topology, so it processes all three mains phases directly without an external transformer. Input fluctuations of ±10% are allowed, which keeps normal line variation within the operating range of the power electronics. Power passes through an integrated mains filter that reduces conducted interference before it reaches the rest of the drive system. The unit is built as Design Generation 1 of the platform, which identifies the first revision of this hardware arrangement. This format keeps the power stage compact while preserving the connections needed for upstream supply and downstream distribution.

Thermal management relies on liquid cooling with an internal pump, so heat is removed through a coolant circuit instead of being discharged into the cabinet air. That approach supports high continuous output while keeping surrounding enclosure temperatures more stable during heavy operation. The unit comes without application-specific extras, which leaves expansion space available for optional I/O or fieldbus cards when the installation requires added functions. It is classified as a drive controller and is used to rectify, monitor, and distribute regulated DC energy to coordinated servo and spindle axes.