RD52.1-7N-110-L-NN-FW

The RD52.1-7N-110-L-NN-FW, Bosch Rexroth Indramat, RD 500 Drive Controllers form the core of the REFUdrive RD50 Drive Control Series, providing robust DC supply inverters engineered for heavy-duty motor management. This universal drive controller handles nominal connecting voltages of 530-670 V DC and supplies a continuous 110 kW output without internal braking electronics. A forced air cooling system ensures effective heat removal under peak loads, while its design supports precise motor regulation across varied industrial and commercial applications. Designed without a built-in brake chopper, it integrates seamlessly into larger drive architectures requiring external braking modules.

Operated at a 4 kHz pulse frequency, the RD52.1-7N-110-L-NN-FW drives motors rated up to 110 kW, and at 6 kHz it can support motors up to 90 kW. The unit is enclosed in a rugged IP20 housing rated for ambient operating temperatures of 0 … 40 °C and altitudes up to 1000 m, maintaining full performance within these limits. To sustain thermal stability, a minimum airflow of 0.4 m3/s across the size-class E chassis is mandatory, with the complete assembly weighing 44 kg. Bosch Rexroth’s integrated radio interference filters suppress harmonic feedback into the mains, and commissioning is streamlined via an operator panel or PC using Rdwin software.

Engineered for seamless integration, the RD52.1-7N-110-L-NN-FW conforms to standardized mounting guidelines and ships globally with a one-year warranty for immediate deployment. Its modular architecture accelerates installation and maintenance by trained personnel, minimizing downtime in critical process, chemical, packaging, and food-processing lines. The combination of high power density, reliable cooling, and advanced EMI suppression ensures consistent motor performance and long-term operational efficiency.