RD52.1-4B-090-L-NN-FW

The Bosch Rexroth Indramat RD52.1-4B-090-L-NN-FW from the RD 500 Drive Controllers series combines robust design with advanced functionality to drive three-phase applications. This converter with a built-in brake chopper accepts a nominal connecting voltage of 3 x AC 380-480 V and delivers a rated power of 90 kW through forced air cooling. Its compact footprint and modular architecture ensure seamless installation and maintenance in demanding industrial environments. Integrated brake choppers and a high-efficiency cooling mode optimize performance under continuous and peak loads.

Featuring a rapid current cycle time of 0.1 ms and a torque rise time of 0.3 ms, the RD52.1 converter ensures precise and responsive control of connected motors. It offers a 200% overload capacity for 0.5 seconds and 170% overload capacity for 1 second, maintaining stability during transient events. The unit type’s built-in brake chopper assists in regenerative braking and emergency stops, while an external fan interface allows addition of a high-capacity blower to enhance thermal management. Firmware updates and configuration should be performed by certified professionals to safeguard system integrity.

Designed for flexible integration, the RD52.1-4B-090-L-NN-FW supports programmable elements such as timers, comparators, and ramp-function generators. A powerful PID controller manages proportional, integral, and differential tasks to deliver smooth acceleration and dynamic load adaptation. Bosch Rexroth Indramat’s custom-grade manufacturing guarantees traceable quality and reliable operation, backed by a standard one-year warranty when ordered through authorized distributors.