R911326818 is part of the CSH Advanced Control System Series by Indramat Controls.
Specs
Characteristics: Advanced Type: Single-axis control unit Interfaces: Encoder evaluation, Encoder emulation Encoder supply voltage: 5V Inrush current: 4A Inrush Pulse Width: 100 ms Programming Interface: RS232 serial interface Control Panel Type: Single line display, Four keys Additional Features: Digital I/O extension.