RS51.1-4G-031-L-NN-FW

RS51.1-4G-031-L-NN-FW, Bosch Rexroth Indramat, RD 500 Drive Controllers delivers a robust solution for three-phase induction motor control. This drive unit accepts a Nominal Connecting Voltage of 3 x AC 380-480 V and provides a Rated Power of 31 kVA through a precise, pulse-width–modulated inverter stage. The system incorporates a Built-in Brake Chopper and Resistor to dissipate regenerated energy and safeguard downstream components. A Forced Air Cooling Mode maintains optimal thermal conditions under continuous load.

Weighing 55 kg and packaged within a 770 × 270 mm footprint, the RS51.1-4G-031-L-NN-FW is classified as a Drive Control Device suitable for demanding industrial installations. Its Application: High-speed grinding spindles highlights its capability to sustain variable-frequency operation across 0–2000 Hz, while maintaining a nominal current draw of 42 A. The integrated brake chopper delivers continuous brake power of 0.9 kW against a minimum resistance of 12 Ω, ensuring rapid torque dissipation. A 3K3 environmental class rating and A1 radio interference suppression guarantee stable performance in electrically noisy environments.

Compact installation and cabinet integration are simplified by the unit’s IP20 enclosure, which is optimized for altitudes up to 1000 m and ambient temperatures from 0 °C to +40 °C. Front-access service panels enable swift replacement or inspection of power modules, while standardized mounting provisions reduce cabinet wiring complexity. The RS51.1-4G-031-L-NN-FW’s combination of high power density, integral braking, and flexible cooling makes it an exceptionally reliable choice for precision machining centers, grinding machines, and other high-speed spindle applications.