R911394321 is part of the HCS Compact Converters / Drive Controllers Series by Indramat Drives.
Specs
Operational Efficiency: 95 percent Machine LifeSpan: 5 years Extra Features: Multi-Encoder Interface and Hall Sensor Adaptor Digital Units: Configurable Input and Output Safety Technology: Safe Torque Off and Safe Brake Control Input Voltage: 200-500 volts Current Limit: 54 amperes Connector Type: Three-Phase Electrical Connector Special Feature: Sercos Master Cross-Communication Module