R911247021 is part of the DDS Drive Controllers Series by Indramat Drives.
Servo Feedback: Digital Standards: UL Battery: 3.6 V lithium Number of Plug-in slots: 5 U1 Slot: Command Communication Module with ANALOG interface Status Display: Yes Mounting Orientation: Vertical Input Power Source: Supply Module prescribed by Rexroth Indramat Nominal Current: 15 A Power Loss during Continuous Operation: 80 W Cooling Method: Natural Convection