R911281237 is part of the DDS Drive Controllers Series by Indramat Drives.
Product: DDS Drive Controller Usage: Motor speed and torque control Power Supply: 24 Volts DC Output Current Rating: 50 Amps Modular: Yes Firmware: Selectable Optional Modules Slots: 3 Software Module: Included Command Communication Module: SERCOS Heat Dissipation Method: In-Cabinet Inlet: Bottom of Controller Outlet: Top of Controller Motor Feedback: Digital Servo and Resolver Installation: Trained Personnel Only