R911275428 is part of the DDS Drive Controllers Series by Indramat Drives.
Product Type: AC Servo Drive Controlled By: Microprocessor Connection: Three-phase AC input Servo Feedback: Digital Interface: SERCOS Communication System: Serial real-time Compatible Motors: MDD Servo Motors Modular Architecture: Yes Basic Unit Slots: 5 Basic Unit Width: 105mm Current Rating: 15 Amps Software Module Slot: U5 Command and Communication Module Slot: U1 Available Slots for Plug In Modules: U2, U3, U4