RS51.1-4G-050-T-NN-FW

The Bosch Rexroth Indramat RS51.1-4G-050-T-NN-FW drive control device from the RD 500 Drive Controllers series is engineered for precision control of high-speed grinding spindles. This unit operates on a nominal connecting voltage of 3-phase AC 380-480 V with a rated power output of 50 kVA. Designed as a compact drive converter, it delivers continuous and reliable performance in demanding machining applications.

Featuring a technical specifications suite optimized for industrial environments, the RS51.1-4G-050-T-NN-FW draws a nominal current of 66 A and a rated current of 83 A to produce a continuous output of 41 kVA and a peak of 50 kVA across a frequency range of 0-1000 Hz. The drive is equipped with an integrated brake chopper and resistor to safely dissipate regenerative energy. Classified under 3KE environmental class, the unit is rated for operation in ambient temperatures from 0 °C to +40 °C and requires an airflow of 0.4 m³/s for internal temperature regulation. Additional protections include an A1 class radio interference suppression system and an IP20 enclosure, ensuring stable operation and minimal electromagnetic emissions.

Constructed with durability and efficiency in mind, this drive controller incorporates a built-in resistor rated at 1.2 kW with a resistance of 10 Ω, providing robust braking capabilities without auxiliary modules. The RS51.1-4G-050-T-NN-FW weighs 80 kg, reflecting its solid metal housing and thermal management components. Its IP20 protection level safeguards internal electronics from dust ingress, while the integrated radio suppression meets industrial EMI standards. In industrial installations, this drive delivers enhanced reliability, precise speed control and energy-efficient braking, making it an ideal choice for grinding spindle applications where uptime and consistency are critical.