Product Description:

The RD52.1-4B-160-F-VW-FW is a drive controller produced by Bosch Rexroth Indramat as part of the RD 500 Drive Controllers series. Designed around a three-phase AC converter topology, it governs induction or synchronous motors used in automated conveyors, extruders, and general motion axes. The module interprets speed and torque commands from a PLC, modulates the motor currents accordingly, and serves as the power interface between plant mains and rotating equipment. Cabinet installation is simplified because the device combines power electronics, cooling hardware, and line conditioning inside one enclosure.

The power section is designed for three-phase AC converter operation and accepts a mains input from 380 to 480 V. Within that window, the hardware tolerates line variation of ±10 %, allowing direct connection to common plant distribution networks without upstream regulators. At nominal conditions, the controller can deliver up to 160 kW of mechanical output to the connected motor, so it covers high-inertia production loads. An integrated mains filter attenuates conducted interference, helping the installation meet EMC targets without external RFI components. These ratings set the electrical envelope for fuse sizing, busbar cross-sections, and thermal planning.

The control algorithm is based on field-oriented vector control, which calculates rotor flux in real time to maintain rated torque even at low speed. Dynamic energy released during braking is redirected to a built-in brake chopper, preventing DC-bus overvoltage and shortening deceleration times. Waste heat is removed by integrated forced-air cooling with liquid circulation, so the enclosure temperature remains within limits during continuous high load. The application functions use Combination: V1 + W1, which provides predefined parameter sets for speed and torque tasks. The hardware belongs to design generation 1, and the control package can be matched to the intended motion profile.