Product Description:

The RD52.1-8N-011-L-V1-FW is an inverter module produced by Bosch Rexroth Indramat and belongs to the RD 500 Drive Controllers series. Designed for cabinet installation, the unit works with induction or synchronous motors to regulate speed and torque in automated machinery that uses a DC link supply. By converting intermediate circuit voltage into a variable output frequency, it supports controlled motion in packaging lines, conveyors, and similar equipment. Its role in the drive system is to translate available DC bus energy into the motor output needed for stable operation across changing load conditions.

The module is supplied without a built-in brake chopper, so regenerative energy must be handled by an external resistor or by a shared DC bus arrangement. Motor control is based on field-oriented vector control, which allows fast current response and stable torque production during load changes. Heat is removed by forced air cooling, with a housing-mounted fan moving ambient air across the heat sink surfaces. The intermediate circuit can reach 700 V, which gives the inverter suitable voltage headroom for demanding speed ranges. Power is delivered through an inverter DC supply, so the unit operates from a rectified and filtered source rather than directly from a three-phase mains connection.

The unit is assigned to design generation 1, which places it within the early RD52 platform layout. Its control electronics remain active through 24 V stand-by power from an external source, allowing stored parameters and communication functions to remain available even when the main DC link is switched off. In system documentation, the module is identified as a Drive Controller. This classification places it with compatible RD52 inverter modules used in coordinated multi-axis systems that share common control and power architecture.