Reliance Electric O-57405-C Analog I Drive Module

The Reliance Electric 0-57405-C analog I/O Drive Module is an analog input/output controller designed for Reliance AutoMax drive systems (Reliance Electric, now part of Rockwell Automation). It is intended to be mounted in an AutoMax card storage rack alongside processor, memory, power, and network interface modules to provide drive-level analog signaling. The module is referenced by multiple part numbers, including 0-57405-C, 57405, and 57C405, reflecting its role across various AutoMax configurations. Its faceplate features two mounting brackets for secure rack installation and includes an RS-232 interface labeled P4 and TO PMI, as well as a terminal strip for interfacing with external equipment. In typical AutoMax/DCS setups, the 0-57405-C delivers and receives analog control signals to and from connected drives, serving as the analog I/O foundation within the drive ecosystem. This legacy module occupies a dedicated position in Reliance Electric’s automation lineage and remains compatible with AutoMax-era hardware that relies on analog signaling for drive control.