R911347577 is part of the HCS Compact Converters / Drive Controllers Series by Indramat Drives.
Specs
Usage: Control Electric Motor for Industrial Machines Memory Slot: MicroSD Card Slot Encoder Compatibility: Endat2.1, EnDat2.2, SSI, BISS, TTL, C, MSM Encoder Safety Measure: Safe Torque Off Integrated Safety Technology Firmware: Not Included, Can be ordered separately Installation Height Limit: Not to exceed 1000 meters above sea level.