RD52.1-4N-022-L-NN-FW

The RD52.1-4N-022-L-NN-FW from Bosch Rexroth Indramat is a member of the RD 500 Drive Controllers series. This AC Drive Converter operates with a Nominal Connecting Voltage of 3 x AC 380-480 V and delivers a Rated Power of 22 kW. Utilizing forced air cooling, the unit maintains optimal thermal performance under continuous operation. Designed primarily for motor control applications, it converts three-phase AC input into precise, variable-frequency output, enabling efficient drive system integration and smooth motor acceleration and deceleration.

At a pulse frequency of 4 kHz, the converter achieves a continuous output current of 43 A and a peak output current of 55 A, ensuring robust performance under varying load conditions. The device incorporates a mains filter to suppress electrical noise, although it does not include a built-in brake chopper. Rated power loss is 0.8 kW, reflecting efficient power handling and minimal heat generation. A cooling airflow of 0.1 m³/s is required to support forced air cooling, while the complete drive weighs 36 kilograms, facilitating secure installation within standard control cabinets.

The RD52.1-4N-022-L-NN-FW features an IP20 protection rating for safe indoor use in industrial environments. Optional features include current filter feedback, cable damping feedback, integrated frequency conversion, 24 V standby power supply, and 95 mm² motor terminals, enhancing customization for diverse applications. Cable routing recommendations and noise suppression measures ensure electromagnetic compatibility and reliable operation. Built to stringent quality standards and engineered for durability and efficiency, this drive converter delivers precise motor control, reduced downtime, and seamless integration in modern industrial automation systems.