Product Description:

The RD52.1-4B-160-R-W1-FW/S130 is a drive controller produced by Bosch Rexroth Indramat for the RD 500 Drive Controllers series. It conditions three-phase power and performs closed-loop regulation so that large industrial motors follow commanded speed and torque profiles in automated lines, presses, and continuous-process machinery. This type of control is commonly used where process speed must remain stable despite changing mechanical demand from the driven machine. By combining power electronics, control logic, and protective hardware in one chassis, the unit reduces the number of separate cabinet components. It also supports coordinated operation with plant-level automation that supervises acceleration, running speed, and stopping behavior.

This model uses field-oriented vector control to regulate flux and torque independently, allowing precise motor response during load changes. It allows the drive to react quickly to commanded changes without losing control of motor magnetization. A built-in brake chopper dissipates regenerated energy as heat during rapid deceleration, which helps prevent DC-link overvoltage. Thermal loads are removed by liquid cooling with internal pump, a closed system that keeps semiconductor temperatures stable during sustained high output. The controller has a nominal output of 160 kW, making it suitable for high-power conveyors, extruders, and similar equipment. Incoming mains can range from 380 to 480 V, which matches common industrial supply levels.

Power is received from a three-phase AC converter supply, allowing direct connection to common plant grids. Voltage variation of up to ±10% is permitted, helping the drive maintain steady operation during normal utility fluctuation. An integrated mains filter reduces conducted electromagnetic interference at the line connection. This can reduce the amount of external EMC hardware needed at the cabinet input. Motor and DC-bus conductors terminate on 95 mm² terminals C and F, providing connection points sized for the current carried by this class of drive.