Reliance 57401-1B Drive Digital I Module

The Reliance 57401-1B Drive Digital I Module is a legacy digital input/output (I/O) module built for Reliance Electric AutoMax drive systems. In Reliance Electric’s AutoMax line, the 57401-1B (and its 0-57401 family siblings) provides digital I/O signals to interface with sensors, switches, and drive-control logic within the AutoMax controller network. The module is documented in the 0-57401 family materials, with D-2716 (and the related J-2716) manuals referenced for installation, wiring, and troubleshooting in vintage Baldor Reliance/Reliance automation environments. It is typically encountered in older installations and is commonly sought for repair, replacement, or preservation of legacy AutoMax-driven systems.