The R911200876 (RD51.1-4B-090-L-V1-FW) is a 90-kilowatt drive controller. The converter has an input rating of 380-480 Volts AC and includes an integrated brake chopper, having a continuous power of 55 kilowatts and a peak power of 260 kilowatts. Falling in size class E, the 74-kilogram drive employs forced air cooling, requiring 0.4 cubic meters per second of airflow. Operating within temperatures of 0-40 degrees Celsius, it is suited for environments meeting the 3K3 class and installation altitudes under 1000 meters. A 17% reduction in output is necessary for altitudes above 2000 meters. The drive should be installed in dust-free areas with under 90% relative humidity, clear of aggressive gases or heat-sensitive devices. Standby power of 24 V external is available, allowing the drive to function without the main AC. Firmware needs separate purchasing and the product comes with a 1-year warranty from Indramat USA.
Drive Type: Converter Based Rated Output: 90 kilowatts Brake Chopper: Included Input Rating: 380-480 Volts AC (Three Phase) Brake Chopper Continuous Power: 55 kilowatts Brake Chopper Peak Power: 260 kilowatts (1 second) Minimum Resistance: 2.5 Ohms Size Class: E Weight: 74 kilograms Cooling Method: Forced air cooling Required Air Flow for Cooling: 0.4 cubic meters per second Environmental Class: 3K3 Permitted Operating Temperature: 0-40 degrees Celsius Installation Site Altitude: 1000 meters Output Derates at Altitude: 17% at 2000 meters Additional Function: 24 V external standby power Firmware: Ordered Separately Shipping: Global
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