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

The RS51.1-4G-031-S-NN-FW from Bosch Rexroth Indramat is a member of the RD 500 Drive Controllers family, engineered for precision control of synchronous and induction motors. This robust drive unit accepts a nominal connecting voltage of 3 x AC 380-480 V and delivers a rated power of 31 kVA, making it ideal for demanding applications such as drive control for high-speed grinding spindles. Equipped with a built-in brake chopper and resistor and classified under the IP20 protection class, it offers advanced protection against foreign objects while requiring installation in a cabinet rated at least IP56. The controller’s compact design ensures seamless integration into modern automation architectures without compromising performance or safety.

Reliability and safety are further enhanced by a rated current of 56 A and a low leakage current of 3.5 mA, ensuring stable operation under variable load conditions. The unit features natural convection cooling, which eliminates moving parts and extends service life, provided that a minimum clearance of 80 mm is maintained around the enclosure for optimal airflow. Although Additional Functions are Not Equipped in this model, its versatile Features and fault-tolerant design reduce downtime. The controller’s IP20 housing protects internal circuitry during routine operation, while installation in an IP56 cabinet adds an extra layer of environmental shielding.

Operation and commissioning are straightforward thanks to an intuitive user panel with a four-line graphical display and six pressure-sensitive keys that allow real-time monitoring and parameter adjustments. Built specifically for integration into automated production lines, the RS51.1-4G-031-S-NN-FW offers flexible configuration via standard industrial communication protocols. Every unit carries a one year warranty from the manufacturer, underscoring Bosch Rexroth Indramat’s commitment to quality and long-term support.