R911284549 is part of the DDS Drive Controllers Series by Indramat Drives.
Product Version: 2 Cooling Technology: Heat Technology Regulated DC Voltage: 24V Control Cabinet Ingress Protection Rating: IP 10 Plug-in Module: SERCOS Rated Current: 50A DC Bus Voltage Rating: 300V ±15% Separate Firmware: Required Ideal Operating Temperature: 0oC to 45oC.