R911389371 is part of the HCS Compact Converters / Drive Controllers Series by Indramat Drives.
Specs
Feature: Safe Torque Off (STO)
Communication Module: Multi-Ethernet
Encoder Interface: Multi-encoder
Encoder Supply Voltage: 5V and 12V
Firmware: Supported but ordered separately
Control Panel: Standard
Operating Keys: Four
Display: Single-line
Switching Frequency: 4kHz, 8kHz, 12kHz, or 16kHz
Maximum Current: 13A
Mains Connecting Voltage: Three-phase AC voltage between 110V and 230V.