R911266391 is part of the DDS Drive Controllers Series by Indramat Drives.
Design: Modular Cooling Method: Internal Cooling Rated Current: 50 Amps Weight: 7.5 kg Motor Feedback System: Digital Servo Feedback Communication Module: Single-axis Positioning Control Version Type: 1 Ambient Temperature: 0 – 45 degrees C Firmware: Ordered Separately Protection Rating Category: IP 10 according to DIN 40 050