Product Description:

Bosch Rexroth Indramat builds the RD52.1-8C-030-L-NN-FW for the RD 500 Drive Controllers series. As a drive controller, it serves as the power element in an automation cell and works with upstream control hardware to regulate motor speed and torque in production machinery. The unit accepts a preconditioned DC supply and modulates three-phase output, allowing integration with other modules in the same platform for coordinated multi-axis motion or process control. Because the DC input is conditioned upstream, the controller can focus on output regulation and quick response to changing load conditions during operation.

This model employs field oriented vector control, so torque-producing and flux-producing currents are calculated independently for accurate dynamic response. This control method helps maintain stable speed and torque during acceleration, deceleration, and changing process loads. Thermal stability is maintained through forced air cooling, which moves cabinet air across the heat sink to keep switching devices within safe temperature limits. The power stage is rated for 30 kW, indicating the continuous power level available to the connected load. Bus terminals are designed for up to 700 V, which sets the required insulation spacing and calls for compatible external braking modules. The controller is fed from an inverter DC source, so it omits an internal rectifier and relies on a separate front end for line conversion.

In an SFT inverter system, the RD52.1-8C-030-L-NN-FW serves as the power section while parameter storage remains in a supervising unit. It can operate in Operating as RD51 SFT mode, which allows use with earlier RD51-based applications without changing existing drive programs. The option slots are not equipped, so no additional encoder or fieldbus cards are installed in the base unit. Any specialized feedback or network expansion must be added through separate accessories matched to the application. The hardware belongs to generation 1.