Product Description:

The Bosch Rexroth Indramat RD52.1-7N-160-R-M1-FW belongs to the RD 500 Drive Controllers series. As an inverter-based drive controller, it conditions DC bus power and modulates three-phase output for large induction or synchronous motors in automated machinery, conveying lines, and test stands. The unit provides closed-loop current and speed regulation so system PLCs can execute precise motion, torque, or process control without separate motor starters. This arrangement lets one controller manage motor acceleration, steady-state speed, and load response within a centralized drive system.

At its core, the controller employs field-oriented vector control, which allows decoupled torque and flux regulation for dynamic response across the speed range. Thermal management relies on liquid cooling with an internal pump, a cooling arrangement used on units rated at 132 kW and above, so circulating coolant removes heat from the power section and helps keep cabinet air temperature stable at high load. The power stage is rated for 160 kW, which is the continuous mechanical power it can deliver to a connected motor under nominal conditions. The DC link is supplied from an inverter DC source, and the input section accepts a bus voltage from 530 to 670 V for integration with common rectifier modules.

It ships without a built-in brake chopper, so regenerated energy must be handled by an external resistor or returned to the supply. The power terminals are delivered without output chokes, leaving harmonic attenuation to be added where line standards require it. The hardware corresponds to design generation 1, which places the unit in the first RD 500 generation. The logic package is not resident, so firmware must be ordered as a separate subposition for application-specific functions and fieldbus options.