The R911201331 (RD51.1-5B-055-D-D1-FW) is a converter unit type control device from the Bosch Rexroth RD500 series. Boasting a nominal connecting voltage of 3 x 500 V AC ± 10%, this unit finds applications in conveyor technology, assembly systems, and machine tools. It has a built-in brake chopper with a constant power of 33 kW and minimum resistance of 5 Ohms at a Pulse-width modulation (PWM) frequency of 4 kHz. Its rated power output varies, achieving 55 kW at 4 kHz PWM frequency and 45 kW at 8 kHz. The R911201331 (RD51.1-5B-055-D-D1-FW) features a plug-through cooling mechanism and has an Ingress Protection (IP) rating of 20, indicating its dust-resistance and object protection capacity. Suitable for industrial settings, it fulfils EN 55011/EN 61800-3 noise immunity standards. It operates optimally between 0 and 40 degrees Celsius and requires programming before use. Indramat USA offers global shipping and a one-year warranty on this product.
Product Type: Converter Unit Nominal Voltage: 3 x 500 V AC ± 10% Brake Chopper Power: 33 kW Brake Chopper Minimum Resistance: 5 Ohms PWM Frequency: 4 kHz Maximum Rated Power Output: 55 kW Rated Power at 4 kHz: 55 kW Rated Power at 8 kHz: 45 kW Cooling Type: Plug-through Heat Extraction Rated Current at 4 kHz: 80 A Rated Current at 8 kHz: 66 A Ingress Protection (IP) Rating: 20 Size Class: D Radio Interference Suppression Standards: EN 55011/EN 61800-3 Perm. Air Humidity at 82° F: < 85% Ideal Operating Temperature: 0 to 40 degrees Celsius
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