R911377458 is part of the HCS Compact Converters / Drive Controllers Series by Indramat Drives.
Specs
Cooling Method: Internal air circulation Signal Processing: Scalable Encoders: Two optional at X8 connection Coupling Option: DC bus coupling up to eight controllers Requirement: Bb relay contact part of main contactor Certification: cULus Listed Additional Feature: Memory card insertion with or without firmware Insulation Resistance: In accordance with EN 60204-1 Operation After Storage: At least an hour if stored for more than a year Relative Humidity: 5% to 95% during operation, storage and transport Mounting Positions: Rear, right-side, left-side on housing Resistors: Breaking resistors on rear Mounting Hardware: M6 x 20 screws Voltage Warning: High housing voltage due to improper connection