R911321538 is part of the CSH Advanced Control System Series by Indramat Controls.
Specs
Product Category: Motion Control Unit Product Use: High-end applications Physical Size: 241mm x 103mm x 49.5mm Quality Control: Yes Special Feature: Starting Lockout Control Panel: Yes LED Display: Yes Error Code Display: Yes Recommended Stranded Wire Size: 0.25 to 0.5 mm square Firmware Requirement: Yes Optical Encoder Interface Support: Yes Ordering Method: Separate or in Drive Controller Control Board Connection Point H1: Control Panel Interface Control Board Connection Point X2: Serial Interface.