R911389457 is part of the KSM Servo Drives Series by Indramat Drives.
Specs
Coupling: 2 x M12 MultiEthernet Safety Option: Not Equipped Connecting Voltage: 750VDC Firmware: Supports Patch, Monitoring and Logbook Functions Discharge Requirement: Before Disconnecting Electrical Connections Cool Down Requirement: Before Performing Any Work Holding Brake: Can be Released Through X141 Interface Parameter Archiving: At Time of Initial Commissioning Maintenance: Keep Free of Excessive Shavings, Dust, or Dirt Cable Check: Periodically for Damage Motor Shaft: Plain Shaft with Shaft Sealing Ring Type Plate: Included with Product Details.