R911281531 is part of the DMD Servo Drives Series by Indramat Drives.
Product Type: Servo Drive Model: DMD021-W082N Power Output: Up to 750 watts Nominal Voltage: 230Vac Width: 50mm Height: 168mm Depth: 170mm Display: Six-digit LED Keys: Three Arrow Keys Connectors: Three (PC, user-side signals and rotary encoder) Terminal Block: Motor and Power Supply Connections