Product Description:

The RD52.1-7N-030-L-V1-FW is a drive controller manufactured by Bosch Rexroth Indramat and assigned to the RD 500 Drive Controllers series. It interfaces with motors and higher-level PLCs to regulate speed, torque, and direction in automated production cells, conveyors, and processing machines. This role makes the unit a central part of closed-loop motion control where stable output and responsive motor regulation are required during changing load conditions.

This model delivers a continuous mechanical output of 30 kW, which is the maximum shaft power it can supply to connected motors during steady operation. The internal DC bus accepts link voltages from 530 to 670 V, allowing the unit to operate on high-power common-bus systems without additional step-up converters. Current processing is handled by field-oriented vector control, which maintains precise torque control even at low speeds by aligning current with the motor’s magnetic field. Thermal energy is removed by forced air cooling, with fans moving cabinet air across the heat sink to keep power components within their intended temperature range. The controller is designed for an inverter DC supply, meaning it receives pre-rectified DC instead of raw three-phase AC. It is supplied without a built-in brake chopper, so regenerative energy must be handled by an external braking solution when local dissipation is required.

Auxiliary operation includes 24 V standby power, so an external low-voltage source can keep the control electronics active while the main DC bus is shut down. The unit is part of Design Generation 1, matching the first generation of the RD 500 platform. It is also supplied with firmware ordered as a separate subposition, allowing the software package to be selected independently of the hardware. This arrangement helps keep control functions available for communication and stored settings during main power interruptions.