R911272821 is part of the DDS Drive Controllers Series by Indramat Drives.
Type: Basic Unit Drive Controller Usage: Controls Electrical Motors Rated Current: 25 Amperes Feedback: Digital Servo Motor Cooling Method: Airflow from Outside the Control Cabinet Firmware: Ordered Separately Power Requirement: DC Bus Voltage of 300 Volts (+/- 15%) Peak Current: 25A Continuous Current: 25A Operating Temperature: 0 to 45 degrees Celsius Storage and Transportation Temperature: -30 to 85 degrees Celsius.